Datasheet > NAU88U22AYG

NAU88U22AYG

更新时间： 2024-09-16 17:15:51

品牌	Logo	应用领域
新唐 - NUVOTON		/
页数	文件大小	规格书
92页	2490K
描述
QFN32 (5x5)

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NAU88U22AYG 数据手册

NAU88U22A

24-bit Stereo Audio CODEC with Speaker Driver

GENERAL DESCRIPTION

The NAU88U22A is a low power, high quality CODEC for portable and general purpose audio applications. In addition

to precision 24-bit stereo ADCs and DACs device integrates a broad range of additional functions to simplify

implementation of complete audio system solutions. The NAU88U22A includes drivers for speaker, headphone, and

differential or stereo line outputs, and integrates preamps for stereo differential microphones, significantly reducing

external component requirements. Also, a fractional PLL is available to accurately generate any audio sample rate for

the CODEC using any commonly available system clock from 8MHz through 33MHz.

Advanced on-chip digital signal processing includes a 5-band equalizer, a 3-D audio enhancer, a mixed-signal

automatic level control for the microphone or line input through the ADC for the playback path. Additional digital filtering

options are available in the ADC path, to simplify implementation of specific application requirements such as “wind

noise reduction” and speech band enhancement. The digital audio input/output interface can operate as either a master

or a slave.

The NAU88U22A operates with analog supply voltages from 2.5V ~ 3.6V, while the digital core can operate at 1.7V to

conserve power. The loudspeaker BTL output pair and two auxiliary line outputs can operate using a 5V supply to

increase output power capability, enabling the NAU88U22A to drive 1 Watt into an external speaker. Internal register

controls enable flexible power saving modes by powering down sub-sections of the chip under software control.

The NAU88U22A is specified for operation from -40°C ~ +85°C. Automotive grade AEC-Q100 qualification & TS16949

compliant device is available upon request.

FEATURES

 Real-time readback of signal level and DSP status

 Supports any sample rate from 8kHz to 48kHz

 Industrial temperature range: –40°C ~ +85°C

 Package is Halogen-free, RoHS-compliant and

TSCA-compliant

 DAC: 94dB SNR and -84dB THD (“A” weighted)

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

 Integrated BTL speaker driver: 1W into 8Ω

 Integrated head-phone driver: 40mW into 16Ω

 Integrated programmable microphone amplifier

 Integrated line input and line output

 On-chip PLL

APPLICATIONS

 Personal Media Players

 Smartphones

 Personal Navigation Devices

 Portable Game Players

 Camcorders

 Digital Still Cameras

 Portable TVs

 Stereo Bluetooth Headsets

 Integrated DSP with specific functions:

• 5-band equalizer

• 3-D audio enhancement

• Input automatic level control (ALC/AGC)/limiter

• Output dynamic-range-compressor/limiter

• Notch filter and high pass filter

 Standard audio interfaces: PCM and I²S

 Serial control interfaces with read/write capability

Oct 30, 2023

Page 1 of 92

Rev 3.5

12 3 4 5 6 7...92

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