Datasheet > NAU8502

NAU8502

更新时间： 2024-09-16 01:17:03

品牌	Logo	应用领域
新唐 - NUVOTON		/
页数	文件大小	规格书
92页	2214K
描述
24-bit Stereo Audio ADC with Differential Microphone Inputs

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NAU8502 数据手册

NAU8502

24-bit Stereo Audio ADC with Differential Microphone Inputs

emPowerAudio^™

1. GENERAL DESCRIPTION

The NAU8502 is a low power, high quality audio input system for portable applications. In addition to precision

24-bit stereo ADCs, this device integrates a broad range of additional functions to simplify implementation of

complete audio systems. The NAU8502 includes low-noise stereo differential high gain microphone inputs with

wide range programmable amplifiers, separate line inputs, and an analog bypass/sidetone line level stereo output.

Advanced on-chip digital signal processing includes a limiter/ALC (Automatic Level Control), 5-band equalizer,

notch filter, and a high-pass filter for speech optimization and wind noise reduction. The digital interface can

operate as either a master or a slave. Additionally, an internal fractional-N PLL is available to accurately generate

any audio sample rate clock for the ADCs derived using any available system clock from 8MHz through 33MHz.

The NAU8502 operates with analog supply voltages from 2.7V to 3.6V, while the digital core can operate as low

as 1.71V to conserve power. Internal control registers enable flexible power conserving modes, shutting down or

reducing power in sub-sections of the chip under software control.

The NAU8502 is specified for operation from -40°C to +85°C. AEC-Q100 & TS16949 compliant device is

available upon request.

2. FEATURES

24-bit signal processing linear Audio ADC



ADC: 90dB SNR and -80dB THD(“A” weighted)

Supports any sample rates from 8KHz - 48kHz

Analog I/O



Very wide range programmable input amplifier

Stereo line inputs with gain options and mixing

Stereo differential input microphone amplifiers

Interfaces



Standard audio interfaces: PCM and I²S

Serial control interfaces with read/write capability)

emPowerAudio^™

Datasheet Revision 2.5

Page 1 of 92

March, 2014

12 3 4 5 6 7...92

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