Datasheet > PBL38621-2

PBL38621-2

更新时间： 2024-01-28 20:12:45

品牌	Logo	应用领域
爱立信 - ERICSSON		/
页数	文件大小	规格书
16页	133K
描述
Subscriber Line Interface Circuit

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中文翻译

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数据手册

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PBL38621-2 数据手册

June 1999

PBL 386 21/2

Subscriber Line

Interface Circuit

Description

Key Features

• 24-pin SSOP package

The PBL 386 21/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated

circuit for use in DAML, FITL and other telecommunications equipment. The PBL

386 21/2 has been optimized for low total line interface cost and a high degree of

flexibility in different applications.

The PBL 386 21/2 has constant current feed, programmable to max. 30 mA.

A second lower battery voltage may be connected to the device to reduce short

loop power dissipation. The SLIC automatically switches between the two battery

supply voltages without need for external components or external control.

The SLIC incorporates loop current, ground key and ring trip detection functions.

The PBL 386 21/2 is compatible with loop start signaling.

Two- to four-wire and four- to two-wire voice frequency (VF) signal conversion is

accomplished by the SLIC in conjunction with either a conventional CODEC/filter or

with a programmable CODEC/filter, e.g. SLAC, SiCoFi, Combo II. The programmable

the two-wire impedance, complex or real, is set by a simple external network.

Longitudinal voltages are suppressed by a feedback loop in the SLIC and the

longitudinal balance specifications meet Bellcore TR909 requirements.

The PBL 386 21/2 package options are 24-pin SSOP, 24-pin SOIC or 28-pin PLCC.

• High and low battery with automatic

switching

• 60 mW on-hook power dissipation in

active state

• On-hook transmission

• Long loop battery feed tracks Vbat for

maximum line voltage

• Only +5 V feed in addition to battery

• Selectable transmit gain (1x or 0.5x)

• No power-up sequence

• 44V open loop voltage @ -48V battery

feed

• Full longitudinal current capability

during on-hook state

• Analog over temperature protection

permits transmission while the

protection circuit is active

• Polarity reversal

• Integrated Ring Relay driver

• Ground key detector

• Programmable signal headroom

• -40 °C to +85 °C ambient temperature

range

Ring Relay

RRLY

Driver

Ring Trip

Comparator

TIPX

RINGX

Input

Decoder

and

Ground Key

Detector

Control

DET

POV

PSG

PLC

Line Feed

Controller

and

Longitudinal

Signal

VCC

Two-wire

Interface

Suppression

PBL

PBL 386 21/2

386 21/2

VBAT2

VBAT

PLD

REF

Off-hook

Detector

PBL 386 21/2

AGND

BGND

VTX

RSN

VF Signal

Transmission

PTG

24-pin SOIC, 24-pin SSOP, 28-pin PLCC

Figure 1. Block diagram.

12 3 4 5 6 7...16

中文翻译

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与PBL38621-2相关器件

型号	品牌	获取价格	描述	数据表
PBL386212QNS	ERICSSON	获取价格	Subscriber Line Interface Circuit
PBL386212QNT	ERICSSON	获取价格	Subscriber Line Interface Circuit
PBL386212SHT	ERICSSON	获取价格	Subscriber Line Interface Circuit
PBL386212SOS	ERICSSON	获取价格	Subscriber Line Interface Circuit
PBL386212SOT	ERICSSON	获取价格	Subscriber Line Interface Circuit
PBL38622	INFINEON	获取价格	Subscriber Line Interface Circuit
PBL38630	INFINEON	获取价格	Subscriber Line Interface Circuit
PBL38630/1QN	ERICSSON	获取价格	SLIC, Bipolar, PQCC28, PLASTIC, LCC-28
PBL38630/1QN:T	ERICSSON	获取价格	SLIC, Bipolar, PQCC28, PLASTIC, LCC-28
PBL38630/1SO	ERICSSON	获取价格	SLIC, Bipolar, PDSO24, SOIC-24

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