Datasheet > BL1062A1

BL1062A1

更新时间： 2024-02-24 04:50:51

品牌	Logo	应用领域
上海贝岭 - BELLING		/
页数	文件大小	规格书
7页	253K
描述
Low voltage transmission circuits with dialer interface

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BL1062A1 数据手册

BL1062A1

Low voltage transmission circuits with dialer interface

1. GENERAL DESCRIPTION

The BL1062A1 is integrated circuits that perform all speech and line interface functions

required in fully electronic telephone sets. It performs electronic switching between dialling and

speech. The ICs operate at line voltage down to 1.6 V DC (with reduced performance) to facilitate

the use of more telephone sets connected in parallel. BL1062A1 improves the EMC performance

in-circuit that can enhance the telephone sets’ EMC.

2. FEATURES

ꢀ

Low DC line voltage; operates down to 1.6 V (excluding polarity guard)

Voltage regulator with adjustable static resistance

Provides a supply for external circuits

Symmetrical high-impedance inputs (64 Κ Ω ) for dynamic, magnetic or piezoelectric

microphones

ꢀ

Asymmetrical high-impedance input (32 ΚΩ) for electret microphones

DTMF signal input with confidence tone

Mute input for pulse or DTMF dialling, active LOW (MUTE)

Receiving amplifier for dynamic, magnetic or piezoelectric earpieces

Large gain setting ranges on microphone and earpiece amplifiers

Line loss compensation (line current dependent) for microphone and earpiece amplifiers

Gain control curve adaptable to exchange supply

DC line voltage adjustment facility

Enhanced EMC performanc

3. BLOCK DIAGRAM

Fig. 1 Block Diagram

http://www.belling.com.cn

- 1 -

8/25/2006

Total 7 Pages

Wrote by 2006

12 3 4 5 6 7

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