器件名称: E-TDA7437N
功能描述: Digitally controlled audio processor
文件大小: 353.17KB 共34页
简 介:TDA7437N
Digitally controlled audio processor
Features
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Input multiplexer – Four stereo, one mono input, and one differential input – Selectable input gain for optimal adaptation to different sources Fully programmable loudness function Volume control in 1dB steps including gain up to 16dB Zero crossing mute, soft mute and direct mute Bass and treble control Four speaker attenuators- four independent speakers control in 1dB steps for balance and fader facilities Pause detector programmable threshold All functions programmable via serial I2C bus low noise are obtained. Several new features like softmute, and zero-crossing mute are implemented. The soft Mute function can be activated in two ways either via the serial bus (Mute byte, bit D0), or directly on pin 28 through an I/O line of the microcontroller Very low DC stepping is obtained by use of a BICMOS technology. LQFP44
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Description
The audioprocessor TDA7437N is an upgrade of the TDA731X audioprocessor family. Due to a highly linear signal processing, using CMOS-switching techniques instead of standard bipolar multipliers, very low distortion and very
Order codes
Part numbers E-TDA7437N E-TDA7437NTR Package LQFP44 (10x 10x 1.4mm) LQFP44 (10x 10x 1.4mm) Packing Tray Tape and reel
December 2006
Rev 2
1/34
www.st.com 1
TDA7437N
Contents
1 2 3 PIN descriptions and electrical specifications . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . ……
