High-Linearity, 1700MHz to 3000MHz Upconversion ... · LO2 selected, 1900MHz < fLO < 2100MHz 49 LO1...

General DescriptionThe MAX2041 high-linearity passive upconverter ordownconverter mixer is designed to provide 7.4dB NFand a 7.2dB conversion loss for an RF frequency rangeof 1700MHz to 3000MHz to support UMTS/WCDMA,DCS, PCS, and WiMAX base-station transmitter orreceiver applications. The IIP3 is typically +33.5dBmfor both downconversion and upconversion operation.With an LO frequency range of 1900MHz to 3000MHz,this particular mixer is ideal for high-side LO injectionarchitectures. (For a pin-compatible mixer meant forlow-side LO injection, refer to the MAX2039.)In addition to offering excellent linearity and noise perfor-mance, the MAX2041 also yields a high level of compo-nent integration. This device includes a double-balancedpassive mixer core, a dual-input LO selectable switch,and an LO buffer. On-chip baluns are also integrated toallow for a single-ended RF input for downconversion (orRF output for upconversion), and single-ended LO inputs.The MAX2041 requires a nominal LO drive of 0dBm, andsupply current is guaranteed to be below 145mA.The MAX2041 is pin compatible with the MAX2031815MHz to 995MHz mixer, making this family of passiveupconverters and downconverters ideal for applicationswhere a common PC board layout is used for both fre-quency bands.The MAX2041 is available in a compact 20-pin thinQFN package (5mm x 5mm) with an exposed paddle.Electrical performance is guaranteed over the extended-40°C to +85°C temperature range.

ApplicationsUMTS/WCDMA Base Stations

DCS 1800/PCS 1900 EDGE Base Stations

cdmaOneTM and cdma2000® Base Stations

WiMAX Base Stations and Customer Premise Equipment

PHS/PAS Base Stations

Predistortion Receivers

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radio

Military Systems

Microwave Links

Digital and Spread-Spectrum Communication Systems

Features 1700MHz to 3000MHz RF Frequency Range

1900MHz to 3000MHz LO Frequency Range

1500MHz to 2000MHz LO Frequency Range(MAX2039)

DC to 350MHz IF Frequency Range

7.2dB Conversion Loss

+33.5dBm Input IP3

+23.3dBm Input 1dB Compression Point

7.4dB Noise Figure

Integrated LO Buffer

Integrated RF and LO Baluns

Low -3dBm to +3dBm LO Drive

Built-In SPDT LO Switch with 43dB LO1 to LO2Isolation and 50ns Switching Time

Pin Compatible with the MAX2031 815MHz to995MHz Mixer

External Current-Setting Resistor Provides Optionfor Operating Mixer in Reduced-Power/Reduced-Performance Mode

Lead-Free Package Available

MA

X2

04

1

High-Linearity, 1700MHz to 3000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

19-3948; Rev 0; 1/06

EVALUATION KIT AVAILABLE

PART TEMP RANGE PIN-PACKAGEPKG

CODE

MAX2041ETP -40°C to +85°C20 Thin QFN-EP*(5mm x 5mm)bulk

T2055-3

MAX2041ETP-T -40°C to +85°C20 Thin QFN-EP*(5mm x 5mm)T/R

T2055-3

MAX2041ETP+ -40°C to +85°C

20 Thin QFN-EP*(5mm x 5mm)lead-freebulk

T2055-3

MAX2041ETP+T -40°C to +85°C

20 Thin QFN-EP*(5mm x 5mm)lead-freeT/R

T2055-3

*EP = Exposed paddle. T = Tape-and-reel package.+ = Lead free.cdmaOne is a trademark of CDMA Development Group.

cdma2000 is a registered trademark of TelecommunicationsIndustry Association.

Pin Configuration and Typical Application Circuit appear atend of data sheet.

MA

X2

04

1


2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.

VCC to GND...........................................................-0.3V to +5.5VTAP, LOBIAS, LOSEL to GND....................-0.3V to (VCC + 0.3V)LO1, LO2, IF+, IF- to GND ....................................-0.3V to +0.3VIF, LO1, LO2 Input Power...............................................+15dBmRF Input Power .................................................................20dBmRF (RF is DC shorted to GND through a balun) .................50mAContinuous Power Dissipation (TA = +70°C)

20-Pin QFN-EP (derated 20mW/°C above +70°C) ..........2.2W

θJA .................................................................................+33°C/WθJC ...................................................................................+8°C/WOperating Temperature Range (Note A) ....TC = -40°C to +85°CJunction Temperature ......................................................+150°CStorage Temperature Range .............................-65°C to +165°CLead Temperature (soldering, 10s) .................................+300°C

DC ELECTRICAL CHARACTERISTICS(MAX2041 Typical Application Circuit, VCC = +4.75V to +5.25V, no RF signals applied, IF+ and IF- DC grounded through a trans-former, TC = -40°C to +85°C. Typical values are at VCC = +5V, TC = +25°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage VCC 4.75 5.00 5.25 V

Supply Current ICC 104 145 mA

LO_SEL Input Logic Low VIL 0.8 V

LO_SEL Input Logic High VIH 2 V

Note A: TC is the temperature on the exposed paddle of the package.

AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)(MAX2041 Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to+3dBm, PRF = 0dBm, fRF = 1700MHz to 3000MHz, fLO = 1900MHz to 3000MHz, fIF = 200MHz, fLO > fRF, TC = -40°C to +85°C,unless otherwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 2100MHz, fIF = 200MHz,TC = +25°C, unless otherwise noted.) (Note 1)


RF Frequency Range fRF 1700 3000 MHz

MAX2041 1900 3000LO Frequency Range fLO

MAX2039 1500 2000MHz

IF Frequency Range fIF External IF transformer dependent DC 350 MHz

Conversion Loss LC PRF < +2dBm 7.2 dB

Loss Variation Over Temperature TC = -40°C to +85°C 0.0075 dB/°C

Input Compression Point P1dB (Note 2) 23.3 dBm

Input Third-Order Intercept Point IIP3

Two tones:fRF1 = 1900MHz,fRF2 = 1901MHz,PRF = 0dBm/tone,fLO = 2100MHz,PLO = 0dBm

33.5 dBm

Input IP3 Variation OverTemperature

TC = -40°C to +85°C ±0.75 dB

Noise Figure NF Single sideband 7.4 dB

Noise Figure Under-BlockingPRF = 5dBm, fRF = 2000MHz, fLO =2190MHz, fBLOCK = 2100MHz(Note 3)

19 dB

MA

X2

04

1


_______________________________________________________________________________________ 3


LO Drive -3 +3 dBm

2 x 2 2LO - 2RF, PRF = 0dBm 63Spurious Response at IF

3 x 3 3LO - 3RF, PRF = 0dBm 69dBc

LO2 selected, 1900MHz < fLO < 2100MHz 49LO1 to LO2 Isolation

LO1 selected, 1900MHz < fLO < 2100MHz 43dB

Maximum LO Leakage at RF Port PLO = +3dBm (Note 4) -18.5 dBm

Maximum LO Leakage at IF Port PLO = +3dBm -30 dBm

Minimum RF-to-IF Isolation 35 dB

LO Switching Time 50% of LOSEL to IF settled to within 2° 50 ns

RF Port Return Loss 18 dB

LO port selected, LO and IF terminated 16LO Port Return Loss

LO port unselected, LO and IF terminated 26dB

IF Port Return Loss LO driven at 0dBm, RF terminated into 50Ω 20 dB

AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION) (continued)(MAX2041 Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to+3dBm, PRF = 0dBm, fRF = 1700MHz to 3000MHz, fLO = 1900MHz to 3000MHz, fIF = 200MHz, fLO > fRF, TC = -40°C to +85°C,unless otherwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 2100MHz, fIF = 200MHz,TC = +25°C, unless otherwise noted.) (Note 1)

AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)(MAX2041 Typical Application Circuit, VCC = +4.75V to +5.25V, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF = 1700MHz to 3000MHz,fLO = 1900MHz to 3000MHz, fIF = 200MHz, fRF = fLO - fIF, TC = -40°C to +85°C, unless otherwise noted. Typical values are at VCC =+5V, PIF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 2100MHz, fIF = 200MHz, TC = +25°C, unless otherwise noted.) (Note 1)


Input Compression Point P1dB (Note 2) 23.3 dBm

Input Third-Order Intercept Point IIP3

Two tones:fIF1 = 200MHz,fIF2 = 201MHz,PIF = 0dBm/tone,fLO = 1900MHz,PLO = 0dBm

33.5 dBm

LO - 2IF 67LO ± 2IF Spur

LO + 2IF 65dBc

LO - 3IF 75LO ± 3IF Spur

LO + 3IF 72dBc

Output Noise Floor POUT = 0dBm -160dBm/

Hz

Note 1: All limits include external component losses. Output measurements taken at IF port for downconverter and RF port forupconverter from the Typical Application Circuit.

Note 2: Compression point characterized. It is advisable not to continuously operate the mixer RF or IF input above +15dBm.Note 3: Measured with external LO source noise filtered so the noise floor is -174dBm/Hz. This specification reflects the effects of all

SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.Note 4: Refer to the MAX2043 for improved LO leakage of -52dBm typical.

MA

X2

04

1


4 _______________________________________________________________________________________

CONVERSION LOSS vs. RF FREQUENCY

MAX

2041

toc0

1

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

210019001700

5

6

7

8

9

41500 2300

TC = +85°C

TC = -40°C

TC = +25°C


MAX

2041

toc0

2

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

210019001700

6

5

7

8

9

41500 2300

PLO = -3dBm, 0dBm, +3dBm


MAX

2041

toc0

3

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

210019001700

6

5

7

8

9

41500 2300

VCC = 4.75V, 5.0V, 5.25V

INPUT IP3 vs. RF FREQUENCY

MAX

2041

toc0

4

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

INPUT IP3 vs. RF FREQUENCYM

AX20

41 to

c05

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

PLO = 0dBm

PLO = -3dBm

PLO = +3dBm


MAX

2041

toc0

6

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

NOISE FIGURE vs. RF FREQUENCY

MAX

2041

toc0

7

RF FREQUENCY (MHz)

NOIS

E FI

GURE

(dB)

23502200205019001750

6

7

8

9

10

51600 2500

TC = +85°C

TC = -40°C

TC = +25°C

NOISE FIGURE vs. RF FREQUENCY

MAX

2041

toc0

8

RF FREQUENCY (MHz)

NOIS

E FI

GURE

(dB)

2200 2350205019001750

6

7

8

9

10

51600 2500

PLO = -3dBm

PLO = 0dBm, +3dBm

NOISE FIGURE vs. RF FREQUENCYM

AX20

41 to

c09

RF FREQUENCY (MHz)

NOIS

E FI

GURE

(dB)

2200 2350205019001750

6

7

8

9

10

51600 2500

VCC = 4.75V, 5.0V, 5.25V

Typical Operating Characteristics(MAX2041 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF , fIF = 200MHz, R1 = 549Ω, unless other-wise noted.)

Downconverter Curves

MA

X2

04

1


_______________________________________________________________________________________ 5

2LO - 2RF RESPONSE vs. RF FREQUENCY(LO1 SELECTED)

MAX

2041

toc1

0

FUNDAMENTAL RF FREQUENCY (MHz)

2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

80

451500 2300

TC = +85°C

TC = -40°C TC = +25°C

PRF = 0dBm

MAX

2041

toc1

1


2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

80

451500 2300

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

PRF = 0dBm


MAX

2041

toc1

2


2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

80

451500 2300

PRF = 0dBm

VCC = 4.75V VCC = 5.0V

VCC = 5.25V


MAX

2041

toc1

3


2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

85

80

451500 2300

TC = +85°C

TC = -40°CTC = +25°C

PRF = 0dBm


MAX

2041

toc1

4


2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

85

80

451500 2300

PRF = 0dBm

PLO = +3dBm PLO = 0dBm

PLO = -3dBm


MAX

2041

toc1

5


2LO

- 2RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

85

80

451500 2300

PRF = 0dBmVCC = 5.25V

VCC = 5.0V

VCC = 4.75V


3LO - 3RF RESPONSE vs. RF FREQUENCY

MAX

2041

toc1

6


3LO

- 3RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

85

80

451500 2300

TC = +85°C

TC = -40°C

TC = +25°CPRF = 0dBm

3LO - 3RF RESPONSE vs. RF FREQUENCY

MAX

2041

toc1

7


3LO

- 3RF

RES

PONS

E (d

Bc)


210019001700

60

55

50

65

70

75

85

80

451500 2300

PRF = 0dBm

3LO - 3RF RESPONSE vs. RF FREQUENCYM

AX20

41 to

c18


3LO

- 3RF

RES

PONS

E (d

Bc)

210019001700

60

55

50

65

70

75

85

80

451500 2300

PRF = 0dBmVCC = 5.25V

VCC = 5.0V

VCC = 4.75V

Typical Operating Characteristics (continued)(MAX2041 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF , fIF = 200MHz, R1 = 549Ω, unless other-wise noted.)


MA

X2

04

1


6 _______________________________________________________________________________________

INPUT P1dB vs. RF FREQUENCY

MAX

2041

toc1

9

RF FREQUENCY (MHz)

INPU

T P 1

dB (d

Bm)

210019001700

22

21

20

23

24

25

27

26

17

18

19

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C


MAX

2041

toc2

0

RF FREQUENCY (MHz)

INPU

T P 1

dB (d

Bm)

210019001700

22

21

20

23

24

25

27

26

17

18

19

1500 2300

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm


MAX

2041

toc2

1

RF FREQUENCY (MHz)

INPU

T P 1

dB (d

Bm)

210019001700

22

21

20

23

24

25

27

26

17

18

19

1500 2300

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

LO SWITCH ISOLATION vs. LO FREQUENCY

MAX

2041

toc2

2

LO FREQUENCY (MHz)

LO S

WIT

CH IS

OLAT

ION

(dB)

2100 230019001700

40

45

50

55

351500 2500

TC = -40°C

TC = +85°C

TC = +25°C

LO SWITCH ISOLATION vs. LO FREQUENCYM

AX20

41 to

c23

LO FREQUENCY (MHz)

LO S

WIT

CH IS

OLAT

ION

(dB)

2100 230019001700

40

45

50

55

351500 2500

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

LO SWITCH ISOLATION vs. LO FREQUENCY

MAX

2041

toc2

4

LO FREQUENCY (MHz)

LO S

WIT

CH IS

OLAT

ION

(dB)

2100 230019001700

40

45

50

55

351500 2500

VCC = 4.75V, 5.0V, 5.25V

LO LEAKAGE AT IF PORT vs. LO FREQUENCY

MAX

2041

toc2

5

LO FREQUENCY (MHz)

LO L

EAKA

GE (d

Bm)

-40

-35

-30

-25

-20

-15

-10

-452100 230019001700 2500

TC = +25°C

TC = +85°C

TC = -40°C

LO LEAKAGE AT IF PORT vs. LO FREQUENCY

MAX

2041

toc2

6

LO FREQUENCY (MHz)

LO L

EAKA

GE (d

Bm)

-40

-35

-30

-25

-20

-15

-10

-452100 230019001700 2500

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

LO LEAKAGE AT IF PORT vs. LO FREQUENCYM

AX20

41 to

c27

LO FREQUENCY (MHz)

LO L

EAKA

GE (d

Bm)

-40

-35

-30

-25

-20

-15

-10

-452100 230019001700 2500

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V



MA

X2

04

1


_______________________________________________________________________________________ 7

LO LEAKAGE AT RF PORT vs. LO FREQUENCY

MAX

2041

toc2

8

LO FREQUENCY (MHz)

LO L

EAKA

GE R

F PO

RT (d

Bm)

2100 230019001700

-25

-20

-15

-10

-301500 2500

TC = -40°C

TC = +85°C

TC = +25°C


MAX

2041

toc2

9

LO FREQUENCY (MHz)

LO L

EAKA

GE R

F PO

RT (d

Bm)

2100 230019001700

-25

-20

-15

-10

-301500 2500



MAX

2041

toc3

0

LO FREQUENCY (MHz)

LO L

EAKA

GE R

F PO

RT (d

Bm)

2100 230019001700

-25

-20

-15

-10

-301500 2500

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

RF-TO-IF ISOLATION vs. RF FREQUENCY

MAX

2041

toc3

1

RF FREQUENCY (MHz)

RF-T

O-IF

ISOL

ATIO

N (d

B)

210019001700

30

35

40

45

50

20

25

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

RF-TO-IF ISOLATION vs. RF FREQUENCYM

AX20

41 to

c32

RF FREQUENCY (MHz)

RF-T

O-IF

ISOL

ATIO

N (d

B)

210019001700

30

35

40

45

50

20

25

1500 2300


RF-TO-IF ISOLATION vs. RF FREQUENCY

MAX

2041

toc3

3

RF-T

O-IF

ISOL

ATIO

N (d

B)

210019001700

30

35

40

45

50

20

25

1500 2300

VCC = 4.75V, 5.0V, 5.25V

RF FREQUENCY (MHz)

RF PORT RETURN LOSS vs. RF FREQUENCY

MAX

2041

toc3

4

RF FREQUENCY (MHz)

RF P

ORT

RETU

RN L

OSS

(dB)


250020001500

25

30

35

20

15

10

0

5

401000 3000

IF PORT RETURN LOSS vs. IF FREQUENCY

MAX

2041

toc3

5

IF FREQUENCY (MHz)

IF P

ORT

RETU

RN L

OSS

(dB)

250200100 150

25

30

35

20

15

10

0

5

40

45

5050 300 350

VCC = 4.75V, 5.0V, 5.25V



MA

X2

04

1


8 _______________________________________________________________________________________


LO SELECTED RETURN LOSSvs. LO FREQUENCY

MAX

2041

toc3

6

LO FREQUENCY (MHz)

LO S

ELEC

TED

RETU

RN L

OSS

(dB)

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

250020001500

25

30

35

20

15

10

0

5

401000 3000

LO UNSELECTED RETURN LOSSvs. RF FREQUENCY

MAX

2041

toc3

7

LO FREQUENCY (MHz)

LO U

NSEL

ECTE

D RE

TURN

LOS

S (d

B)

250020001500

40

30

20

10

0

60

50

1000 3000


SUPPLY CURRENT vs. TEMPERATURE (TC)

MAX

2041

toc3

8

TEMPERATURE (°C)

SUPP

LY C

URRE

NT (m

A)

3510-15

90

100

110

120

130

70

80

-40 60 85

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V


Typical Operating Characteristics(MAX2041 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO - fIF, fIF = 200MHz, R1 = 549Ω, unless otherwise noted.)


MAX

2041

toc3

9

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

20001900180017001600

5

6

7

8

9

41500 22002100

TC = +85°C

TC = -40°CTC = +25°C


MAX

2041

toc4

0

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

20001900180017001600

6

7

8

9

4

5

1500 22002100



MAX

2041

toc4

1

RF FREQUENCY (MHz)

CONV

ERSI

ON L

OSS

(dB)

20001900180017001600

6

7

8

9

4

5

1500 22002100

VCC = 4.75V, 5.0V, 5.25V

Upconverter Curves

MA

X2

04

1


_______________________________________________________________________________________ 9

Typical Operating Characteristics (continued)(MAX2041 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO - fIF, fIF = 200MHz, R1 = 549Ω, unless otherwise noted.)


MAX

2041

toc4

2

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

20001900180017001600

31

33

27

29

35

37

39

251500 22002100

TC = +85°C

TC = -40°C

TC = +25°C


MAX

2041

toc4

3

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

20001900180017001600

31

33

27

29

35

37

39

251500 22002100



MAX

2041

toc4

4

RF FREQUENCY (MHz)

INPU

T IP

3 (d

Bm)

20001900180017001600

31

33

27

29

35

37

39

251500 22002100

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

MAX

2041

toc4

5


LO +

2IF

REJ

ECTI

ON (d

Bc)

200019001800170016001500 22002100

TC = +85°C

TC = -40°C

TC = +25°C

PIF = 0dBm

60

65

50

45

55

70

75

80

85

LO + 2IF REJECTION vs. RF FREQUENCY(LO1 SELECTED)

MAX

2041

toc4

6


LO +

2IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

PLO = -3dBm

PLO = +3dBm

PLO = 0dBm PIF = 0dBm


MAX

2041

toc4

7


LO +

2IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

VCC = 4.75V, 5.0V, 5.25V

PIF = 0dBm


MAX

2041

toc4

8


LO +

2IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

TC = +85°C

PIF = 0dBmTC = -40°C

TC = +25°C


MAX

2041

toc4

9


LO +

2IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

PIF = 0dBm

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm


MAX

2041

toc5

0


LO +

2IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

VCC = 4.75V, 5.0V, 5.25V

PIF = 0dBm


Upconverter Curves

MA

X2

04

1


10 ______________________________________________________________________________________


MAX

2041

toc5

1


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

TC = +85°C

PIF = 0dBm

TC = -40°C

TC = +25°C

LO - 2IF REJECTION vs. RF FREQUENCY(LO1 SELECTED)

MAX

2041

toc5

2


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

451500 22002100

PIF = 0dBmPLO = +3dBm

PLO = 0dBmPLO = -3dBm


MAX

2041

toc5

3


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

VCC = 4.75V, 5.0V, 5.25V

VCC = 5.25V

VCC = 4.75V

PIF = 0dBm


MAX

2041

toc5

4


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

451500 22002100

TC = +85°C

PIF = 0dBm

TC = -40°C

TC = +25°C


MAX

2041

toc5

5


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

451500 22002100

PIF = 0dBm

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm


MAX

2041

toc5

6


LO -

2IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

451500 22002100

VCC = 5.25V

VCC = 4.75V

PIF = 0dBm

VCC = 5.0V


LO + 3IF REJECTION vs. RF FREQUENCY

MAX

2041

toc5

7


LO +

3IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

TC = +85°C PIF = 0dBm

TC = -40°C

TC = +25°C

LO + 3IF REJECTION vs. RF FREQUENCY

MAX

2041

toc5

8


LO +

3IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

PIF = 0dBmPLO = +3dBm

PLO = 0dBmPLO = -3dBm

LO + 3IF REJECTION vs. RF FREQUENCYM

AX20

41 to

c59


LO +

3IF

REJ

ECTI

ON (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

PIF = 0dBmVCC = 5.25V

VCC = 4.75VVCC = 5.0V

Upconverter Curves

MA

X2

04

1


______________________________________________________________________________________ 11

LO - 3IF REJECTION vs. RF FREQUENCY

MAX

2041

toc6

0


LO -

3IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

TC = +85°C

PIF = 0dBm

TC = -40°C

TC = +25°C


MAX

2041

toc6

1


LO -

3IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

PIF = 0dBm

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm


MAX

2041

toc6

2


LO -

3IF

REJE

CTIO

N (d

Bc)

20001900180017001600

60

65

50

55

70

75

80

85

90

1500 22002100

PIF = 0dBm

VCC = 5.25V

VCC = 4.75V

VCC = 5.0V


MAX

2041

toc6

3

LO FREQUENCY (MHz)

LO L

EAKA

GE A

T RF

POR

T (d

Bm)

22002100200019001800

-25

-20

-15

-10

-301700 24002300

TC = -40°C, +25°C, +85°C


MAX

2041

toc6

4

LO FREQUENCY (MHz)

LO L

EAKA

GE A

T RF

POR

T (d

Bm)

22002100200019001800

-25

-20

-15

-10

-301700 24002300



MAX

2041

toc6

5

LO FREQUENCY (MHz)

LO L

EAKA

GE A

T RF

POR

T (d

Bm)

22002100200019001800

-25

-20

-15

-10

-301700 24002300

VCC = 5.25V

VCC = 4.75VVCC = 5.0V

MAX

2041

toc6

6

LO FREQUENCY (MHz)

IF L

EAKA

GE (d

Bm)

-70

-90

-80

-60

-50

-40

TC = +85°C

TC = -40°C

TC = +25°C

IF LEAKAGE AT RF vs. LO FREQUENCY

220021002000190018001700 24002300

MAX

2041

toc6

7

LO FREQUENCY (MHz)

IF L

EAKA

GE (d

Bm)

-70

-90

-80

-60

-50

-40IF LEAKAGE AT RF vs. LO FREQUENCY

220021002000190018001700 24002300


MAX

2041

toc6

8

LO FREQUENCY (MHz)

IF L

EAKA

GE (d

Bm)

-70

-90

-80

-60

-50

-40IF LEAKAGE AT RF vs. LO FREQUENCY

220021002000190018001700 24002300

VCC = 5.25V

VCC = 4.75V

VCC = 5.0V


Upconverter Curves

MA

X2

04

1


12 ______________________________________________________________________________________

Detailed DescriptionThe MAX2041 can operate either as a downconverteror an upconverter mixer that provides 7.2dB of conver-sion loss with a typical 7.4dB noise figure. IIP3 is+33.5dBm for both upconversion and downconversionoperation. The integrated baluns and matching circuitryallow for 50Ω single-ended interfaces to the RF portand two LO ports. The RF port can be used as an inputfor downconversion or an output for upconversion. Asingle-pole, double-throw (SPDT) switch provides 50nsswitching time between the two LO inputs with 43dB ofLO-to-LO isolation. Furthermore, the integrated LObuffer provides a high drive level to the mixer core,reducing the LO drive required at the MAX2041’sinputs to a range of -3dBm to +3dBm. The IF port incor-porates a differential output for downconversion, whichis ideal for providing enhanced IIP2 performance. Forupconversion, the IF port is a differential input.

Specifications are guaranteed over broad frequencyranges to allow for use in UMTS, cdma2000, 2G/2.5G/3GDCS 1800, PCS 1900, and WiMAX base stations. TheMAX2041 is specified to operate over an RF frequencyrange of 1700MHz to 3000MHz, an LO frequency rangeof 1900MHz to 3000MHz, and an IF frequency range ofDC to 350MHz. Operation beyond these ranges is pos-sible; see the Typical Operating Characteristics foradditional details.

This device can operate equally well in low-side LO injec-tion applications as long as the LO frequency range isbetween 1900MHz and 3000MHz. If an LO frequencyrange below 1900MHz is desired, refer to the MAX2039.

RF Port and BalunFor using the MAX2041 as a downconverter, the RF inputis internally matched to 50Ω, requiring no external match-ing components. A DC-blocking capacitor is requiredsince the input is internally DC shorted to ground throughthe on-chip balun. The RF return loss is typically betterthan 17dB over a 1400MHz to 3000MHz frequency range.For upconverter operation, the RF port is a single-endedoutput similarly matched to 50Ω.

LO Inputs, Buffer, and BalunThe MAX2041 can be used for either high-side or low-side injection applications with a 1900MHz to 3000MHzLO frequency range. For a device with a 1500MHz to2000MHz LO frequency range, refer to the MAX2039data sheet. As an added feature, the MAX2041 includesan internal LO SPDT switch that can be used for frequen-cy-hopping applications. The switch selects one of thetwo single-ended LO ports, allowing the external oscillatorto settle on a particular frequency before it is switched in.LO switching time is typically less than 50ns, which ismore than adequate for virtually all GSM applications. Iffrequency hopping is not employed, set the switch toeither of the LO inputs. The switch is controlled by adigital input (LOSEL): logic-high selects LO2, logic-lowselects LO1. To avoid damage to the part, voltage MUST

Pin Description

PIN NAME FUNCTION

1, 6, 8, 14 VCCPower-Supply Connection. Bypass each VCC pin to GND with capacitors as shown in the TypicalApplication Circuit.

2 RFSingle-Ended 50Ω RF Input/Output. This port is internally matched and DC shorted to GND through abalun.

3 TAPCenter Tap of the Internal RF Balun. Bypass to GND with capacitors close to the IC, as shown in theTypical Application Circuit.

4, 5, 10, 12,13, 16, 17,

20GND Ground

7 LOBIAS Bias Resistor for Internal LO Buffer. Connect a 549Ω ±1% resistor from LOBIAS to the power supply.

9 LOSEL Local Oscillator Select. Logic control input for selecting LO1 or LO2.

11 LO1 Local Oscillator Input 1. Drive LOSEL low to select LO1.

15 LO2 Local Oscillator Input 2. Drive LOSEL high to select LO2.

18, 19 IF-, IF+ Differential IF Input/Outputs

EP GND Exposed Ground Paddle. Solder the exposed paddle to the ground plane using multiple vias.

MA

X2

04

1


______________________________________________________________________________________ 13

MA

X2

04

1M

AX

20

41

be applied to VCC before digital logic is applied toLOSEL (see the Absolute Maximum Ratings). LO1 andLO2 inputs are internally matched to 50Ω, requiringonly a 22pF DC-blocking capacitor.

A two-stage internal LO buffer allows a wide-input powerrange for the LO drive. The on-chip low-loss balun,along with an LO buffer, drives the double-balancedmixer. All interfacing and matching components fromthe LO inputs to the IF outputs are integrated on chip.

High-Linearity MixerThe core of the MAX2041 is a double-balanced, high-performance passive mixer. Exceptional linearity is pro-vided by the large LO swing from the on-chip LO buffer.

Differential IFThe MAX2041 mixer has an IF frequency range of DC to350MHz. Note that these differential ports are ideal forproviding enhanced IIP2 performance. Single-ended IFapplications require a 1:1 balun to transform the 50Ω dif-ferential IF impedance to a 50Ω single-ended system.After the balun, the IF return loss is better than 15dB.The differential IF is used as an input port for upconvert-er operation. The user can use a differential IF amplifierfollowing the mixer but a DC block is required on both IFpins. In this configuration, the IF+ and IF- pins need tobe returned to ground through a high resistance (about1kΩ). This ground return can also be accomplished bygrounding the RF TAP (pin 3) and AC-coupling the IF+and IF- ports (pins 19 and 18).

Applications InformationInput and Output Matching

The RF and LO inputs are internally matched to 50Ω. Nomatching components are required. Return loss at the RFport is typically better than 17dB over a 1400MHz to3000MHz frequency range, and return loss at the LOports is typically better than 16dB over a 1900MHz to3000MHz frequency range. RF and LO inputs requireonly DC-blocking capacitors for interfacing.

The IF output impedance is 50Ω (differential). For eval-uation, an external low-loss 1:1 (impedance ratio) baluntransforms this impedance to a 50Ω single-ended out-put (see the Typical Application Circuit).

Bias ResistorBias current for the LO buffer is optimized by fine tun-ing resistor R1. If reduced current is required at theexpense of performance, contact the factory for details.If the ±1% bias resistor values are not readily available,substitute standard ±5% values.

Layout ConsiderationsA properly designed PC board is an essential part ofany RF/microwave circuit. Keep RF signal lines as shortas possible to reduce losses, radiation, and induc-tance. For the best performance, route the ground pintraces directly to the exposed pad under the package.The PC board exposed pad MUST be connected to theground plane of the PC board. It is suggested that mul-tiple vias be used to connect this pad to the lower-levelground planes. This method provides a good RF/ther-mal conduction path for the device. Solder the exposedpad on the bottom of the device package to the PCboard. The MAX2041 Evaluation Kit can be used as areference for board layout. Gerber files are availableupon request at www.maxim-ic.com.

Power-Supply BypassingProper voltage-supply bypassing is essential for high-frequency circuit stability. Bypass each VCC pin andTAP with the capacitors shown in the TypicalApplication Circuit; see Table 1. Place the TAP bypasscapacitor to ground within 100 mils of the TAP pin.

Exposed Pad RF/Thermal ConsiderationsThe EP of the MAX2041’s 20-pin thin QFN-EP packageprovides a low thermal-resistance path to the die. It isimportant that the PC board on which the MAX2041 ismounted be designed to conduct heat from the EP. Inaddition, provide the EP with a low-inductance path toelectrical ground. The EP MUST be soldered to aground plane on the PC board, either directly orthrough an array of plated via holes.

COMPONENT VALUE DESCRIPTION

C1 4pF Microwave capacitor (0603)

C4 10pF Microwave capacitor (0603)

C2, C6, C7, C8,C10, C12

22pF Microwave capacitors (0603)

C3, C5, C9, C11 0.01µF Microwave capacitors (0603)

R1 549Ω ±1% resistor (0603)

T1 1:1 BalunIF balun with DC groundedportsM/A-COM MABAES0029

U1 MAX2041 Maxim IC

Table 1. Component List Referring to theTypical Application Circuit

MA

X2

04

1


14 ______________________________________________________________________________________

20 19

GND

IF+

IF-

GND

GND

7 8 9 10

11

12

V CC

LOBI

AS V CC

LOSE

L

GND

13

14

15

161718

LO1

GND

GND

VCC

LO2

6

5

4

3

2

1

GND

GND

TAP

RF

VCC

TOP VIEW

MAX2041

Pin Configuration

Typical Application Circuit

20 19

GND

IF+

IF-

GND

GND

7 8 9 10

11

12

V CC

VCC

LOBI

AS V CC

VCC

LOSE

L

LOSELINPUT

GND

13

14

15

161718

LO1

GND

GND

LO2INPUT

VCC

LO2

6

5

4

3

2

1

GND

GND

TAP

RF

C2C3VCC

VCC

MAX2041 VCC

C4

C1

C12

LO1INPUT

C10

C5

C6 C7

R1

C11

T1

4

5

1

3

IF

C8C9

RF

Chip InformationPROCESS: SiGe BiCMOS

MA

X2

04

1


______________________________________________________________________________________ 15

Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

QFN

TH

IN.E

PS

D2

(ND-1) X e

e

D

C

PIN # 1 I.D.

(NE-1) X e

E/2

E

0.08 C

0.10 C

A

A1 A3

DETAIL A

E2/2

E2

0.10 M C A B

PIN # 1 I.D.

b

0.35x45¡

D/2D2/2

LC

LC

e e

LCCL

k

LL

DETAIL B

LL1

e

AAAAAMARKING

I1

221-0140

PACKAGE OUTLINE,16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm

-DRAWING NOT TO SCALE-

L

e/2

MA

X2

04

1


Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

COMMON DIMENSIONS

MAX.

EXPOSED PAD VARIATIONS

D2NOM.MIN. MIN.

E2NOM. MAX.

NEND

PKG.CODES

1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994.

2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.

3. N IS THE TOTAL NUMBER OF TERMINALS.

4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE.

5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP.

6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY.

7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION.

8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.

9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT EXPOSED PAD DIMENSION FOR T2855-3 AND T2855-6.

NOTES:

SYMBOLPKG.

N

L1

e

EDb

A3

A

A1

k

10. WARPAGE SHALL NOT EXCEED 0.10 mm.

JEDEC

0.70 0.800.75

4.904.90

0.25

0.25

0

- -

4

WHHB4

16

0.350.305.105.105.00

0.80 BSC.

5.00

0.05

0.20 REF.

0.02

MIN. MAX.NOM.16L 5x5

L 0.30 0.500.40

- -- - --

WHHC

20

55

5.005.000.30

0.55

0.65 BSC.

0.450.25

4.904.90

0.25

0.65--

5.105.10

0.35

20L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

- --

WHHD-1

28

77

5.005.000.25

0.55

0.50 BSC.

0.450.25

4.904.90

0.20

0.65--

5.105.10

0.30

28L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

- --

WHHD-2

32

88

5.005.00

0.40

0.50 BSC.

0.300.25

4.904.90

0.50--

5.105.10

32L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

0.20 0.25 0.30

DOWN BONDS ALLOWED

YES3.103.00 3.203.103.00 3.20T2055-3

3.103.00 3.203.103.00 3.20T2055-4

T2855-3 3.15 3.25 3.35 3.15 3.25 3.35

T2855-6 3.15 3.25 3.35 3.15 3.25 3.35

T2855-4 2.60 2.70 2.80 2.60 2.70 2.80T2855-5 2.60 2.70 2.80 2.60 2.70 2.80

T2855-7 2.60 2.70 2.80 2.60 2.70 2.80

3.203.00 3.10T3255-3 3 3.203.00 3.103.203.00 3.10T3255-4 3 3.203.00 3.10

NO

NONO

NO

YESYES

YES

YES

3.203.00T1655-3 3.10 3.00 3.10 3.20 NONO3.203.103.003.10T1655N-1 3.00 3.20

3.353.15T2055-5 3.25 3.15 3.25 3.35 YES

3.353.15T2855N-1 3.25 3.15 3.25 3.35 NO3.353.15T2855-8 3.25 3.15 3.25 3.35 YES

3.203.10T3255N-1 3.00 NO3.203.103.00

L

0.40

0.40

******

**

**********

******

**

** SEE COMMON DIMENSIONS TABLE

–0.15

11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY.

I2

221-0140

PACKAGE OUTLINE,16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm

-DRAWING NOT TO SCALE-

12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY.

3.30T4055-1 3.20 3.40 3.20 3.30 3.40 ** YES

0.050 0.02

0.600.40 0.50

10-----

0.30

4010

0.40 0.50

5.104.90 5.00

0.25 0.35 0.45

0.40 BSC.

0.154.90

0.250.205.00 5.10

0.20 REF.

0.70

MIN.

0.75 0.80

NOM.40L 5x5

MAX.

13. LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", –0.05.

T1655-2 ** YES3.203.103.003.103.00 3.20

T3255-5 YES3.003.103.00 3.20 3.203.10 **

exceptions

High-Linearity, 1700MHz to 3000MHz Upconversion ... · LO2 selected, 1900MHz < fLO < 2100MHz 49 LO1...

Documents

Transcript of High-Linearity, 1700MHz to 3000MHz Upconversion ... · LO2 selected, 1900MHz < fLO < 2100MHz 49 LO1...