L9219A データシートの表示（PDF） - Agere -> LSI Corporation

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L9219A

Low-Cost Line Interface with Reverse Battery and Dual Current Limit

Agere -> LSI Corporation 

L9219A/G Low-Cost Line Interface

with Reverse Battery and Dual Current Limit

Data Sheet

November 2001

Applications (continued)

Table 11. Parts List for Loop Start Application Circuit Using T8536-Type Codec

Name

Value

Integrated Circuits

SLIC

L9219

Protector

Agere L7591

Ringing Relay

Agere L7581/2/3 or EMR

Codec

T8536

Overvoltage Protection

RPT

50 Ω, Fusible

RPR

50 Ω, Fusible

Power Supply

CBAT1

0.1 µF, 20%, 100 V

CCC

0.1 µF, 20%, 10 V

CF1

0.47 µF, 20%, 100 V

CF2

0.1 µF, 20%, 100 V

dc Characteristics

RPROG

35.7 kΩ, 1%, 1/16 W

ac Characteristics

CB1

0.1 µF, 20%, 10 V

CB

0.1 µF, 20%, 10 V

RGP1

8.06 kΩ, 1%, 1/16 W

RCIN

20 MΩ, 5%, 1/16 W

Supervision

RLCTH

22.1 kΩ, 1%, 1/16 W

RTS1

510 Ω, 5%, 2 W

CRTS1

0.015 µF, 20%, 10 V

RTSN

3.4 MΩ, 1%, 1/16 W

RTSP

2.94 MΩ, 1%, 1/16 W

Function

Subscriber loop interface circuit (SLIC).

Secondary protection.

Switches ringing signals.

Third-generation codec.

Protection resistor.

Protection resistor.

VBAT filter capacitor.

VCC filter capacitor.

With CF2, improves idle-channel noise.

With CF1, improves idle-channel noise.

Set low current limit.

ac/dc separation capacitor.

dc blocking capacitor.

Sets dc transmit gain of SLIC.

dc bias.

Sets loop closure (off-hook) threshold.

Ringing source series resistor.

With RTSN and RTSP, forms second 2 Hz filter pole.

With RTSP, sets threshold.

With RTSN, sets threshold.

18

Agere Systems Inc.

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