LUCL7590CAE Ver la hoja de datos (PDF) - Agere -> LSI Corporation

Número de pieza

componentes Descripción

Fabricante

LUCL7590CAE

Telephone Ringing Driver

Agere -> LSI Corporation 

Data Sheet

June 1998

Application

L7590C Telephone Ringing Driver

TIP

RING

RP

20 Ω

RP

20 Ω

250 V PROT

L7581

RELAY

PT XMT

RCV

SLIC

PR

DX

DR

CODEC

RTS1

400 Ω

CB

VDD

0.1 µF

RING TRIP

DETECT

PWM

SIGNAL

VDD GNDD

EN

CLK

CB1

CB2

OUT

L7590C

L2

RINGING

GENERATOR

L1

GNDR

VREF

C2

1 µF

VNEG

RX 15 Ω

* CNEG connects to VNEG pin at chip.

RILIM

L1

20 mH

CNEG*

1.0 µF

VNEG

C1

1.0 µF

Figure 2. Basic Battery-Backed Ringing Application

Table 1. Parts List for Application, Ringing Driver IC

Name

L1

C1

C2

CB

Rx

RILIM

Value

20 mH

1 µF, 250 V, 20%

1 µF, 20 V, 20%

0.1 µF, 10 V, 20%

15 Ω, 1 W

20 Ω to 100 Ω

Function

Part of LC output filter

Part of LC output filter

VREF filter

Voltage doubling capacitor

Hot insertion limiter

Current-limiter adjustment

12-3058.E (F)

Lucent Technologies Inc.

5

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