Número de pieza
NAU85L20
componentes Descripción
Other PDF
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PDF
page
47 Pages
File Size
1.8 MB
Fabricante
Nuvoton Technology
NAU85L20 Hoja de datos - Nuvoton Technology
Nuvoton Technology
Description
The NAU85L20 is a low power, high quality, 2-channel ADC for microphone array application. The NAU85L20 integrates programmable gain preamplifiers for stereo differential microphones, significantly reducing external component requirements. A fractional FLL is available to accurately generate any audio sample rate using any commonly available system clock source from 8KHz through 33MHz. Audio data can be directed to I2S data out lines.
Features
◾ 101dB SNR (A-weighted) @ 0dB gain,
VDDA=1.8V, Fs = 48 kHz, OSR=128x
◾ 91dB 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 48 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, Two’s compliment, MSB first
◾ 32-bit audio sub frames
◾ Package: Pb free 28L-QFN
◾ Temperature range: -40 to 85°
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