AK4637

[AK4637] AK4637 24bit Mono CODEC with MIC/SPK-AMP 1. General Description The AK4637 is a low power 24-bit Mono CODEC with a microphone and speaker amplifiers. The AK4637 supports sampling frequency from 8kHz to 48kHz. It is suitable for a wide range of application from speech signal processing for narrowband, wideband and super wideband to sound signal processing for audio band. The input circuits include a microphone amplifier and a high performance digital ALC (automatic level control) circuit. In addition, the output circuits include a speaker amplifier with 1W output power. It is suitable for various products as well as portable applications with recording/playback function. The AK4637 are available in a small 20-pin QFN (3mm x 3mm, 0.4mm pitch: AK4637EN) package saving mounting area on the board. Application:  IP Camera  Digital Camera  MFP(Multi Function Printer) 2. Features 1. Recording Functions  Analog Input 1 Monaural Single-ended input or Differential input  Microphone Amplifier: +30dB ~ 0dB, 3dB Step  Microphone Power Supply: 2.0V or 2.4V, Noise Level= 108dBV  Digital ALC (Automatic Level Control) - Setting Range: +36dB  52.5dB, 0.375dB Step & Mute  ADC Performance: S/(N+D): 83dB, DR, S/N: 88dB (MIC-Amp=+18dB) S/(N+D): 84dB, DR, S/N: 95dB (MIC-Amp=0dB)  Wind Noise Reduction Filter  5-Band Notch Filter: Include Dynamic Gain Control  Digital Microphone Interface 2. Playback Functions  Digital ALC (Automatic Level Control) - Setting Range: +36dB ~ 52....