AK4958
Overview
The AK4958 is a 24-bit 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.
- Recording Functions
- Analog Input (AK4958EG) Stereo Single-ended input with two Selectors (AK4958ECB) Stereo Single-ended input
- Microphone Amplifier (+30dB, +25dB, +21dB, +18dB, +15dB, +12dB, +6dB, 0dB)
- Digital ALC (Automatic Level Control) - Setting Range: +36dB -52.5dB, 0.375dB Step & Mute - Motor Noise Reduction Circuit
- 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 (with Moving Average Data Output Circuit)
- Automatic Wind Noise Reduction Filter
- 5-Band Notch Filter Include Dynamic Gain Control
- Stereo Separation Emphasis Circuit
- Digital Microphone Interface
