AK4957EN Low Power 24-Bit 2ch ADC & 2ch DAC with ALC/Eq and Mic/SPK/Video-Amp
Audio CODECs> Low Power CODECs> AK4957EN
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
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