Smart Home Audio(325)




NAU8401YG is a low power, high quality audio output system for portable applications. In addition to precision 24-bit stereo DACs, this device integrates a broad range of additional functions to simplify implementation of complete audio systems.  NAU8401YG includes drivers for speaker, headphone, and stereo line outputs, and integrates mixing of the DAC outputs with analog input signals.

Advanced on-chip digital signal processing includes a 5-band equalizer, a 3D audio enhancer, and a digital limiter/dynamic range compressor function for the playback path.  The digital interface can operate as either a master or a slave.  Additionally, an internal fractional-N  PLL is available to generate accurate audio sample rate clocks for the DAC derived from selections of system clocks from 8MHz through 33MHz.

NAU8401YG operates with analog supply voltages from 2.5V to 3.6V, while the digital core can operate as low as 1.7V to reduce power. The loudspeaker BTL output pair and two auxiliary line outputs can use a 5V supply to increase output power capability, enabling the NAU8401 to drive 1 Watt into an external speaker. 

Target Applications:

Portable GPS Navigation Devices
Portable Media Players
Portable Gaming Devices

Key Features:

Audio Input
  - Digital Audio Interface: I2S / PCM Input
  - Sampling Rates: 8K ~ 48KHz
Audio Output
  - Integrated BTL speaker driver:  1W@8Ω
  - Integrated head-phone driver:  40mW@16Ω
  - DAC SNR (A-weighted): 94dB
  - DAC THD+N: -84dB
Advance Feature
  - On-chip high resolution Fractional-N PLL
  - Integrated DSP:
  • 5-band equalizer
  • 3D audio enhancement
  • Automatic level control(ALC)
  • Audio level limiter/dynamic range compressor(DRC)
Operating Characteristics
  - Voltage range(VDDC/B): 1.65V to 3.6V
  - Voltage range(VDDA): 2.5V to 3.6V
  - Temperature range: -40°C to 85°C
  - QFN-32 (5x5mm)
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