| ENGLISH Text size Site map Audio CODECs> Low Power CODECs> AK4957EN AK4957EN Low Power 24-Bit 2ch ADC & 2ch DAC with ALC/Eq and Mic/SPK/Video-Amp Description The AK4957 is a 24bit stereo CODEC with a microphone, speaker, video amplifiers and LDO. The input circuits include a microphone amplifier and the output circuits include a speaker amplifier. It is suitable for portable application with recording/playback function. A one channel composite In/Out video amplifier is also integrated. The AK4957 is available in a small 32pin QFN (4mm x 4mm, 0.4mm pitch), saving mounting area on the board. Key Features 1. Recording Functions * Stereo Single-ended input with two Selectors * MIC Amplifier (+21dB/+18dB/+16dB/+14dB/+8dB/0dB) * Digital ALC (Automatic Level Control) (Setting Range: +36dB to -54dB, 0.375dB Step) * ADC Performance: S/(N+D): 83dB, DR, S/N: 88dB (MIC-Amp=+18dB) S/(N+D): 85dB, DR, S/N: 96dB (MIC-Amp=0dB) * Microphone Sensitivity Compensation >> Read more Block Diagram Contact Us | Privacy Policy | Terms and Conditions Copyright (c) Asahi Kasei Microdevices Corporation.All rights reserved.