AK4691 Description
The AK4691 is a 16bit, 4ch ADC and 2ch DAC with Microphone-Amplifier, Headphone-Amplifier, and Speaker-Amplifier. The recording block corresponds to supports 4-channel inputs, and also has 3-input selector for Internal/External MIC and LINE, output power for Microphone, Pre-Amp, and ALC (Automatic Level Control) circuit. The playback bock has Lineout-Amplifier, Headphone-Amplifier, and Speaker-Amplifier.
AK4691 Key Features
- 4-channel Single-ended Pre-Amp (Pre-Amp Gain: 0dB, +18dB, +20dB, +24dB or +28dB)
- 2-channel Line Input
- 3-input Selector (Internal MIC, External MIC or LINE)
- 4-channel Digital ALC (Automatic Level Control)
- ADC Performance: S/(N+D): 82dB, DR, S/N: 90dB (Pre-Amp=+24dB)