NAU85L40B
Description
The NAU85L40B is a low power, high quality, 4-channel ADC for microphone array application. The NAU85L40B integrates programmable gain preamplifiers for quad differential microphones, significantly reducing external component requirements.
Key Features
- 101dB SNR (A-weighted) @ 0dB gain, VDDA=1.8V, Fs = 48 kHz, OSR=128x
- 92dB THD+N @ 0dB gain, 0.8Vrms in, VDDA=1.8V, Fs=48 kHz, OSR=128x
- -124dB Channel Crosstalk @ 0dB gain, 0.9Vrms in, VDDA=1.8V, Fs=48 kHz, OSR=128x
- Integrated programmable gain microphone amplifier
- On-chip FLL
- I2C Serial control interface with read/write capability
- Supports sample rates from 8 kHz to 96 kHz at 24- bit resolution
- Two separate microphone bias supplies for low noise microphone biasing
- Standard audio data bus interfaces: I2S, Left or Right justified, TDM (4 channel), Two’s compliment, MSB first
- 32-bit audio sub frames
