描述 Description

The TDA7718B is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioprocessor with fully integrated audio filters and new soft-step architecture. The digital control allows programming in a wide range of filter characteristics.

特性 Features

? Input multiplexer
?QD1: quasi-differential stereo inputs
?SE1: stereo single-ended input
?SE2: stereo single-ended input
?SE3: stereo single-ended input
?FD full-differential or quasi-differential input
? 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 -31 dB with 1 dB step resolution
?Soft-step control with programmable blend times
? Bass
?2ndorder frequency response
?Center frequency programmable in 4 steps(60 Hz / 80 Hz / 100 Hz / 200 Hz)
?Q programmable 1.0/1.25/1.5/2.0
?DC gain programmable
?-15 dB to 15 dB range with 1 dB resolution
? Middle
?2ndorder frequency response
?Center frequency programmable in 4 steps(500 Hz / 1 kHz / 1.5 kHz / 2.5 kHz)
?Q programmable 0.75/1.0/1.25
?-15 dB to 15 dB range with 1 dB resolution
? Treble
?2ndorder frequency response(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
?Center frequency programmable in 4 steps(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
?-15 dB to 15 dB with 1 dB resolution
? Speaker
?4 independent soft-step speaker controls
?+15 dB to -79 dB with 1 dB steps
?Direct mute
? Subwoofer
?2ndorder low pass filter with programmable cut off frequency(55 Hz / 85 Hz / 120 Hz / 160 Hz)
?2 independent soft-step level control,+15 dB to –79 dB with 1 dB steps
? Mute functions
?Direct mute
?Digitally controlled soft-mute 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(jiǎn)介

TDA7718B屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的TDA7718B音頻專用音頻專用的半導(dǎo)體器件專為音頻信號(hào)的濾波、驅(qū)動(dòng)、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(dòng)器、前置放大器、信號(hào)混合、信號(hào)處理、語音觸發(fā)器解決方案和 10 Base-T。