Datasheet > PBL3786QN-T

PBL3786QN-T

更新时间： 2024-11-08 14:44:07

品牌	Logo	应用领域
爱立信 - ERICSSON		电信电信集成电路
页数	文件大小	规格书
16页	240K
描述
Telephone Multifunction Circuit, PQCC28, PLASTIC, LCC-28

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PBL3786QN-T 技术参数

生命周期：	Obsolete	零件包装代码：	QLCC
包装说明：	QCCJ,	针数：	28
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.84	Is Samacsys：	N
JESD-30 代码：	S-PQCC-J28	长度：	11.505 mm
功能数量：	1	端子数量：	28
最高工作温度：	70 °C	最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	座面最大高度：	4.57 mm
表面贴装：	YES	电信集成电路类型：	TELEPHONE MULTIFUNCTION CIRCUIT
温度等级：	COMMERCIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
宽度：	11.505 mm	Base Number Matches：	1

PBL3786QN-T 数据手册

PBL 3786

March 1996

PBL 3786

Voice-switched Speakerphone

and Toneringer Circuit

Description

Key Features

The PBL 3786 contains all the necessary circuitry, amplifiers, detectors, comparators

and control functions to implement a high-performance, voice-switched, loud-

speaking, “hands-free” telephone. The gain dynamics (attenuation between

channels) is continuously adjustable (0 - 50 dB) via a separate pin. A background

noise detector in the microphone channel reduces the influence of continuous noise

signals.

The PBL 3786 is designed for telephone line powered applications. The circuit

contains a transformerless power amplifier with patented current supply circuitry that

eliminates the need for inductors. Automatic gain regulation in the power amplifier

extends the operating range at low line voltages.

The PBL 3786 incorporates a high-impedance toneringer circuit with free

continuously selectable frequencies that can be set either by capacitors or controlled

by a microprocessor powered from the chip. The outputs of the toneringer and

speech power amplifier use the same loudspeaker, which is switched with a built-in

automatic change-over function.

•

Adjustable gain range in the

attenuated channel (0 - 50 dB).

Direct telephone-line powered

(patented).

Low power consumption, 2.2 mA at

3.2 V (typical).

Direct drive of 25 - 50 ohm loud-

speaker.

On-chip toneringer with common

loudspeaker, automatic switch-over.

22-pin dual in-line plastic and 28-pin

PLCC encapsulation.

Background noise compensation with

hold.

20 18

15 17

Minimum of external components.

*) All pin numbers in this document

refer to 22-pin DIP package.

PBL 3786

Control

PBL

3786

–

28 PLCC

PBL3786

Ref.

≈1.9V

22-pin

Figure 1. Block diagram.

12 3 4 5 6 7...16

中文翻译

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与PBL3786QN-T相关器件

型号	品牌	获取价格	描述	数据表
PBL3796/2CC	ETC	获取价格	Telecommunication IC
PBL3796/2J	ETC	获取价格	Subscriber Line Interface Circuit
PBL3796/2QN	ERICSSON	获取价格	SLIC, PQCC44, PLASTIC, LCC-44
PBL3796/2RN	ERICSSON	获取价格	SLIC, PQCC32, PLASTIC, LCC-32
PBL3796J	ETC	获取价格	Telecommunication IC
PBL3796N	ERICSSON	获取价格	SLIC, PDIP28, PLASTIC, DIP-28
PBL3796QN	ERICSSON	获取价格	SLIC, PQCC44, PLASTIC, LCC-44
PBL3796RN	ERICSSON	获取价格	SLIC, PQCC32, PLASTIC, LCC-32
PBL3798/2J	ERICSSON	获取价格	SLIC, CDIP28, CERAMIC, DIP-28
PBL3798/2N	ERICSSON	获取价格	SLIC, PDIP28, PLASTIC, DIP-28

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