TDA7721数据手册集成电路（IC）的音频专用规格书PDF

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

简介

TDA7721属于集成电路（IC）的音频专用。由制造生产的TDA7721音频专用音频专用的半导体器件专为音频信号的滤波、驱动、放大、转换和接口而设计。特征包括功能、应用、通道数、接口、电压和规格。应用包括音频系统、汽车音频、消费类音频、乐器、专业音频、通信系统、电信系统、数字音频、驱动器、前置放大器、信号混合、信号处理、语音触发器解决方案和 10 Base-T。