TEA1110A中文资料LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION  CIRCUIT WITH DIALLER  INTERFACE数据手册UTC规格书

描述 Description

The UTC TEA1110A is a versatile telephone transmission circuit providing full speech and line interface functions in electronic telephone sets. This device works at a line voltage which can be as low as 1.6V DC (with reduced performance) to enable parallel connection of telephone sets. It also realizes electronic switchingbetween speeches and dialling.
The UTC TEA1110A is ideal for applications, such as line powered telephone sets, cordless telephones, and fax machines, answering machines.

特性 Features

•  Low DC line voltage; operates down to 1.6V (excluding voltage drop over external polarity guard)
•  Provides a supply for external circuits
•  Asymmetrical high impedance input (32kΩ) for electric microphones
•  MUTE   input for pulse or DTMF dialling
•  AGC line loss compensation for microphone and earpiece amplifiers.