AKM 公司的AK7782是集成24位5路ADC和SRC的雙路音頻信號(hào)處理器(DSP),同時(shí)還集成了8:2立體聲輸入選擇器,取樣速率轉(zhuǎn)換器,速率高達(dá)96kHz,ADC取樣頻率從7.35kHz 到96kHz.本文介紹了AK7782主要特性,方框圖,DSP方框圖,AK7782評(píng)估板AKD7782-A主要功能,方框圖,電路圖以及元件布局圖.

The AK7782 is an audio digital signal processor with integrated 24bit 5ch ADCs, an 8:2 stereo input selector and sample rate converters that support 2ch inputs and the frequency up to 96kHz. The ADC supports wide range of sampling frequency from 7.35kHz to 96kHz. Two integrated audio DSPs have high performance processing speed of 2560step/fs (at 48kHz sampling), and two 6k-word delay RAMs allow surround processing, time alignment adjusting and FIR filtering. As the AK7782 is a RAM based DSP, it is programmable for various user requirements. It is housed in a 100pin LQFP package.