MSA4709A View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

View to exact match

MSA4709A

Subscriber Line Interface Circuit

Oki Electric Industry 

¡ Semiconductor

APPLICATION CIRCUIT

• VBB : –48 V

• Loop Current IL : 30 mA

• Equivalent Terminal Impedance : 600W + 1mF

MSA4709A

TIP

RING

VBB

750W

(*3)

r1

(*6)

r1

750W

VBB

+5V –5V

510k

(*5)

51W

(*1)

(*1)

51W

(*5)

VBB

(*2)

R1

–

+

1m (*4)

RB VBS VCC VEE

G

PE

PB

B

2.2k

2.2k

A

MSA4709A

NB

NE

27k

IL

1m

+–

CDC

4.7k

RY

0.028m

VBB

187k

21k

ZX

0.028m

BN

42k

2.7k

ZR

12k

4WR

1m

+–

CDP

4700pF

CODEC

GSX

AIN–

PCM

OUT

AIN+

MSM6999

PCM

IN

AOUT+

CB

VBB

CN

RG

1m

RSI

RSO

RI

BF SEL SCN

VBB or VEE

(Controller)

FHW

BHW

VCC

R1

RSI

RSO

RI

Fig. 1

TIP

RING

750

+

–

510k

1m

RG

r1

750W

VBB

RB

VBB

Fig. 2

9/11

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