1

Standaed ICs

Dual high slew rate, low noiseoperational amplifierBA15218 / BA15218F / BA15218N

The BA15218, BA15218F, and BA15218N are monolithic ICs with two built-in low-noise, low-distortion operationalamplifiers featuring internal phase compensation. Either a dual or single power supply can be driven, and these products can be driven by a digital system 5V singlepower supply.The following packages are available: 8-pin DIP (BA15218), 8-pin SOP (BA15218F), and 8-pin SIP (BA15218N).

1) Low-voltage operation and single power supply driveenabled.(Single power supply: 4 to 32V, dual power supply:±3 to ±16V)

2) Low noise level. (Vn = 1.0µVrms typ. : RIAA)3) High slew rate. (SR = 3V / µs, GBW = 10MHz typ.)

4) Low offset voltage. (VIO = 0.5mV typ.)5) High gain and low distortion. (GVO = 110dB, THD =

0.0015%)6) Pin connections are the same as with standard dual

operational amplifiers, and outstanding characteris-tics make these products compatible with the 4558and 4560 models.

•Block diagram

–+

+–

1

2

3

4

8

7

6

5

OUT1

– IN1

+ IN1

VEE

VCC

OUT2

– IN2

+ IN2

1ch

2ch

–

+

–

+

1O

UT

1

2–

IN1

3+

IN1

4V

EE

5+

IN2

6–

IN2

7O

UT

2

8V

CC

2ch1ch

BA15218 / BA15218F BA15218N

•Features

2

Standaed ICs BA15218 / BA15218F / BA15218N

•Internal circuit configuration

VCC

VEE

Q3

R2 R3 R4

Q4

D1

C2

Q6

Q7

Q10

Q9

C1

R1

Q5 Q8

Q11

Q13

R6

R7

Q12

Q1– IN

+ IN

Q2

R5

Q14Q15

Q16

OTHERCH

Q17

R8

Q19Q18

R9

OUT

•Absolute maximum ratings (Ta = 25°C)

Parameter SymbolLimits

UnitBA15218 BA15218F BA15218N

Power supply voltage

Power dissipation

Differential input voltage

Common-mode input voltage

Operating temperature

Storage temperature

VCC ± 18 ± 18 ± 18 V

800∗ 550∗ 900∗ mW

VID ± VCC V

VI – VCC ~ VCC V

Load current IOMAX ± 50 ± 50 ± 50 mA

Topr – 40 ~ + 85 – 40 ~ + 85 – 40 ~ + 85 °C

Tstg – 55 ~ + 125 – 55 ~ + 125 – 55 ~ + 125 °C

Pd

± VCC

– VCC ~ VCC

± VCC

– VCC ~ VCC

∗ Refer to Pd characteristics diagram.

The values for the BA15218F are those when it is mounted on a glass epoxy board (50mm × 50mm × 1.6mm).

3

Standaed ICs BA15218 / BA15218F / BA15218N

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = +15V, VEE = -15V)

Parameter Symbol Min. Typ. Max. Unit Conditions

Input offset voltage

Input offset current

Input bias current

High-amplitude voltage gain

Common-mode input voltage

Maximum output voltage

Maximum output voltage

Common-mode rejection ratio

Power supply voltage rejection ratio

Quiescent current

Slew rate

Channel separation

Voltage gain band width

Input conversion noise voltage

VIO — 0.5 5 mV RS % 10kΩ

IIO — 5 200 nA —

IB — 50 500 nA —

AV 86 110 — dB

VICM ± 12 ± 14 — V —

VOH ± 12 ± 14 — V RL ^ 10kΩ

VOL ± 10 ± 13 — V RL ^ 2kΩ

CMRR 70 90 — dB RS % 10kΩ

PSRR 76 90 — dB RS % 10kΩ

IQ — 5 8 mA

S.R. — 3 —

CS — 120 — dB f = 1kHz input conversion

GBW — 10 — MHz f = 10kHz

Vn — 1.0 — µVrms

V / µs

RL ^ 2kΩ, VO = ± 10V

VIN = 0V, RL = ∞

AV = 1, RL = 2kΩ

RIAA, RS = 1kΩ, 10Hz ~ 30kHz

•Electrical characteristic curves

PO

WE

R D

ISS

IPA

TIO

N: P

d (m

W)

AMBIENT TEMPERATURE: Ta (°C)

1200

1000

800

600

400

200

00 25 50 75 100 125 150

BA15218F

BA15218

BA15218N

Fig.1 Power dissipation vs. ambient temperature

85

QU

IES

CE

NT

CU

RR

EN

T: I

Q (

mA

)

POWER SUPPLY VOLTAGE: V± (V)

6

8

4

2

00 ± 10 ± 20

Fig.2 Quiescent current vs. power supply voltage

OP

EN

LO

OP

VO

LTA

GE

GA

IN: A

v (d

B)

FREQUENCY: f (Hz)

140

20

40

60

80

100

120

01 10 100 1k 10k 100k 1M 10M

Fig.3 Open loop voltage gain vs. frequency

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Standaed ICs BA15218 / BA15218F / BA15218NM

AX

IMU

M O

UT

PU

T V

OLT

AG

E: V

OM

(V

)

FREQUENCY: f (Hz)

32

4

8

12

16

20

24

28

0100 1k 10k 100k 1M

Fig.4 Maximum output voltage vs. frequency

INP

UT

BIA

S C

UR

RE

NT

: IB (

nA)

AMBIENT TEMPERATURE: Ta (°C)

20

40

60

80

– 20 0 20 40 60 80

Fig.5 Input bias current vs. ambient temperature

INP

UT

BIA

S C

UR

RE

NT

: IB (

nA)

POWER SUPPLY VOLTAGE: V+ (V)

10

100

75

50

25

20 300 40

Fig.6 Input bias current vs. power supply voltage

INP

UT

VO

LTA

GE

OU

TP

UT

VO

LTA

GE

VIN

(V

)

V

OU

T (

V)

TIME (µs)

0

– 5

5

– 5

5

0

20 30 40100

Fig.7 Output response characteristics

MA

XIM

UM

OU

TP

UT

VO

LTA

GE

: VO

M (

V)

POWER SUPPLY VOLTAGE: V± (V)

30

– 20

– 10

0

10

20

0 ± 10 ± 20

RL = 2kΩ

Fig.8 Maximum output voltage vs. power supply voltage

•Operation notes(1) Unused circuit connectionsIf there are any circuits which are not being used, werecommend making connections as shown in Figure 9,with the non-inverted input pin connected to the poten-tial within the in-phase input voltage range (VICM).

VCC

VEE

+

–

To potential in VICM

Fig.9 Unused circuit connections

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Standaed ICs BA15218 / BA15218F / BA15218N

•External dimensions (Units: mm)

DIP8 SOP8

SIP8

BA15218 BA15218F

BA15218N

0.5 ± 0.13.2

± 0.

23.

4 ±

0.3

8 5

1 4

9.3 ± 0.3

6.5

± 0.

3

0.3 ± 0.1

0.51

Min

.

2.54 0°~15°

7.62

0.4 ± 0.11.27

0.15

0.3Min.

0.15

± 0

.1

0.11

6.2

± 0.

3

4.4

± 0.

2

5.0 ± 0.2

8 5

41

1.5

± 0.

1

10.5

± 0

.5

1 8

2.54

3.5

± 0.

5

1.3

0.8

0.6 0.3 ± 0.1

2.8 ± 0.219.3 ± 0.2

1.2

5.8

± 0.2