描述 Description

The TDA7721 is a high performance signal processor specifically designed for car radio applications.
The device includes a high performance audio processor with fully integrated audio filters and new SoftStep architecture. The digital control allows programming in a wide range of filter characteristics.

特性 Features

? Input multiplexer
? QD1 to QD2: quasi-differential stereo input
? SE1 to SE3: stereo single-ended input
? InGain
? 6 dB with 1 dB steps
? Loudness
? 2ndorder frequency response
? Programmable center frequency (400 Hz / 800 Hz / 2400 Hz)
? 15 dB with 1 dB steps
? Selectable high frequency boost
? Selectable flat-mode (constant attenuation)
? Volume
? +23 dB to -79 dB with 1 dB step resolution
? SoftStep control with programmable blend times
? EQ1
? 2ndorder frequency response
? Center frequency programmable in 4 steps (63 Hz / 80 Hz/ 100 Hz /125 Hz)
? Q programmable in 4 steps (1.0/1.25/1.5/2.0)
? -15 to 15 dB range with 1 dB resolution
? EQ2
? 2ndorder frequency response
? Center frequency programmable in 4 steps (200 Hz/ 250 Hz/ 315 Hz/ 400 Hz)
? Q programmable in 4 steps (1.0/1.25/1.5/2.0)
? -15 to 15 dB range with 1 dB resolution
? EQ3
? 2ndorder frequency response
? Center frequency programmable in 4 steps (630 Hz/ 800 Hz/ 1 kHz/ 1.25 kHz)
? Q programmable in 4 steps (0.75/1.0/1.25/2)
? -15 to 15 dB range with 1 dB resolution
? EQ4
? 2ndorder frequency response
? Center frequency programmable in 4 steps (2 kHz/ 2.5 kHz/ 3.15 kHz/ 4 kHz)
? Q programmable in 4 steps (0.75/1.0/1.25/2)
? -15 to 15 dB range with 1 dB resolution
? EQ5
? 2ndorder frequency response
? Center frequency programmable in 4 steps (6.3 kHz/ 8 kHz / 10 kHz/ 12.5 kHz)
? Q programmable in 4 steps (0.75/1.0/1.25/2)
? -15 to 15 dB range with 1 dB resolution
? Highpass
? 2ndorder frequency response
? Center frequency programmable in 5 steps (63 Hz / 100 Hz / 120 Hz / 150 Hz/ 180 Hz)
? Subwoofer
? 2ndorder low pass filter
? Programmable cut off frequency
? (55 Hz / 85 Hz / 120 Hz / 160 Hz)
? Speaker
? 6 independent soft step speaker controls
? +15 dB to -79 dB with 1 dB steps
? Three selectable output DC level
? Direct mute
? Mute functions
? Direct mute
? Digitally controlled SoftMute with 4 programmable mute-times
? (0.48 ms / 0.96 ms / 8 ms / 16 ms)
? Offset detection
? Offset voltage detection circuit for on-board power amplifier failure diagnosis

簡介

TDA7721屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的TDA7721音頻專用音頻專用的半導(dǎo)體器件專為音頻信號的濾波、驅(qū)動、放大、轉(zhuǎn)換和接口而設(shè)計(jì)。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費(fèi)類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動器、前置放大器、信號混合、信號處理、語音觸發(fā)器解決方案和 10 Base-T。