MX801 Low Power Ringing SLIC MODULE

MX801+3.3V ~ +5.0V Low Power Ringing SLIC

1. Features

z Single supply voltage: +3.3V to +5.0V.z Integral high efficiency DC/DC converter.z Transformerless 2-wire to 4-wire conversionz Integral ringing generatorz Constant current feedz Tip/Ring Polarity reversalz On-hook transmissionz Off-hook detectionz Easy to use, Low external component countz Simplified protection in “on-premise” applications.

2. Applications

z Voice Over Internet Protocol (VoIP)z Cable Modemsz Key Telephone System z IP Gateway system z Wireless Desktop Phone z Set-top Box System z Voice Over DSL (VoDSL)z Short Loop Access Platformsz Remote Subscriber Unitsz Other Terminal Adapters

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MX801 Low Power Ringing SLIC MODULE

3. Product Selector

Part Supply Loop Supply Supply Ringing Supply SupplyNumber Voltage Current Current Current Voltage Current Current

(V) (mA) (off-hook) (ringing) (Vp-p) (on-hook (on-hook@48V) @24V)

MX801-A 3.1~5.5 24~31280~330mA

280~320mA 125~145 60~90mA 30~45mA

MX801-B 3.3~5.5 20~25220~260mA

210~260mA 115~140 60~90mA 30~45mA

MX801-C 4.5~5.5 20~23180~190mA

160~190mA 110~135 60~90mA 30~45mA

Table 1: Ordering Information

Line RMReversal and F/R

Ringing Control

Tip2-4 Wire Supervision SHK

ConverterVout

and LineVin

InterfaceRing

Power Management and

DC-DC converter

VCC GND PD

Figure : Functional Block Diagram

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MX801 Low Power Ringing SLIC MODULE

4. Pin Description

PinName Description#

1 RING 2 wire port; RING wire (Ib is the current sunk into this pin).

2 TIP 2 wire port; TIP wire (Ia is the current sourced from this pin).

3 F/RA logic (L) will reverse the Tip and Ring voltage polarities. F/R is toggled toproduce the ringing output.

4 RMRinging Mode. Sets bias conditions during ringing. Must be set to logic (H)during ringing. Logic (L) for other modes.

5 SHK Indicates an off-hook condition when at logic (H).

6 NC No Connection.

7 NC No Connection.

8 NC No Connection.

9 V Audio In.IN

10 V Audio Out.OUT

11 NC No Connection.

12 GND Ground input for the DC/DC converter.

13 VCC Positive voltage power supply, usually +3.3V ~ +5V.

14 PD Power Down input.

5. Electrical Characteristics

5.1. Absolute Maximum Ratings

Parameter Symbol Min Max Unit

1 DC Supply VoltageV

CC -0.3 7.0 V

2 Maximum Power Dissipation, Off Hook @ 25oCP

SLIC 1.2 W

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MX801 Low Power Ringing SLIC MODULE

5.2. Recommended Operating Conditions

Ver.Parameter Symbol Min Typ Max Unit

A DC Supply Voltage V 3.1 5.5 VCC

B DC Supply VoltageV

CC 3.3 5.5 VC DC Supply Voltage V 4.0 5.0 5.5 V

CC

Operating TemperatureT

OP 0 25 70 OC

5.3. DC Electrical Characteristics

VerParameter Symbol Min Typ Max Unit Test Comments.

1Supply Current, on-hook I

vpwr 60 90 mA@ 5.0V@ 3.3V 70 105 mA

2 ASupply current ringing I

RINGING 330 mA RLOOP = 0R@ 5.0V@ 3.3V 350 mA Load = 1 REN

2 BSupply current ringing I

RINGING 240 mA RLOOP = 0R@ 5.0V@ 3.3V 220 mA Load = 1 REN

2 CSupply current ringing

I 170 mA R= 0R@ 4.0V~5.5V LOOP

RINGINGLoad = 1 REN

3 ASupply current, off-hook I

ACTIVE 290 mA Load = 600R@ 5.0V@ 3.3V 360 mA

3 BSupply current, off-hook） I

ACTIVE 230 mA Load = 600R@ 5.0V@ 3.3V 250 mA

3 C Supply current, off-hook I 180 mA Load = 600R@ 4.0~5.5V ACTIVE

4 Supply current in power I 7 mA @ 5.0Vdown 5 mA @ 3.3VPD

5 AConstant current feed to line I

LOOP 31 mA Load = 600R@ 5.0V@ 3.3V 26 mA

5 BConstant current feed to line I

LOOP 24.5 mA Load = 600R@ 5.0V@ 3.3V 20.5 mA

5 C

Constant current feed to lineILOOP 18 23 mA Load = 600R@ 4.0V~5.0V

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MX801 Low Power Ringing SLIC MODULE

5.4. AC Electrical Characteristics

VerParameter Symbol Min Typ Max Units Test Comments.

1 Impedance 600 ohm2 Input Impedance at V 60 kohm

IN

3 Output impedance at V 10 ohmOUT

5 A Ringing voltage 125 145 Vp-p5 B Ringing voltage 115 140 Vp-p5 C Ringing voltage 110 135 Vp-p6 Transmit gai(2 Wire to V G24 -0.75 0 0.75 dB Off-Hook

OUT

7 Receive gain(V to 2 Wire G42 -0.75 0 0.75 dB Off-HookIN

8Relative Gain.

-0.5 0.5 dBOver frequencyrange 300 to 3400

Referenced to 1kHz. Hz

9 Return Loss RL16

dB300 - 500 Hz

18 500Hz - 3400Hz

10 Transhybrid Loss THL12 dB 300-500Hz21 dB 500-2500Hz16 dB 2500-3400Hz

6. Typical Connection Diagram

+3.3V to +5V Supply

C1C2

MX801470uF/16V 100nF VCC

GNDF/R

Overvoltage ProtectionSHK

PHONE

TIPRM

D2~D5

- +R1 PD20K to 39K

TO

RING1N4004 x 4 or MB4S

BZT03C8

2 D1

Vout

VinP6KE

82or

D6

1N4148

C3 100nF

C4 100nF

MCU

Audio device

R1 = External DC bias resistor (required for CLI) typically 20K to 39K

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