Smart Home Audio(325)




NAU88L25VGB is an ultra-low power high performance audio codec designed for headphone or headset application in smartphone, tablet PC, Chromebooks, laptop, game controller, Bluetooth headphones and other portable devices. It includes one I2S/PCM interface, one high quality stereo DACs, one mono ADC, a Class G stereo headphone amplifier, and industry leading advanced headset features.

NAU88L25VGB has powerful headset detection mechanism, which detects jack insertion / ejection, microphone presence, speaker impedance, and up-to 8 user defined buttons with long/short key press debouce circuit. It also supports headphone crosstalk detection/suppression, and automatic microphone & ground detection / switching to work automatically with different audio jack formats without using external chips or components.

Target Applications:

Gaming Controller
Ultra-Portable Laptop
Mobile Device
Wireless Headset
Smart Remote Controller

Key Features:

ADC Feature
  - SNR (A-weighted): 101dB @ 0dB Mic gain
  - THD+N: -91dB @ 0dB Mic gain
  - Dynamic Range Compressor
  - Programmable Biquad Filter
DAC Feature
  - Class G Headphone Amplifier (28mW @ 32Ω, 1% THD+N)
  - DAC Volume Auto-Attenuation
  - SNR (A-weighted): 124dB @ 0dB gain,  auto-mute enable
  - SNR (A-weighted): 113dB @ 0dB gain,  without auto-mute
  - THD+N: -89dB @ 20mW, RL=32ohm
Audio Input
  - Digital Audio Interface: I2S / PCM Input
  - Analog Input:
  • 1 x Headset Mic
  • 1 x Differential Analog Mic Input
  • 1 x Line-in
  • 2 x Single-Ended Input
  - Sample rates: 8~192 KHz
Advance/Control Feature
  - Headset Detection & Auto Headset switch for MIC and Ground
  - Jack Insertion and Ejection Detection
  - Distinct Keys Detection
  - I2C Control Interface
Operating Characteristics
  - Voltage range(VDDC): 1.61V ~ 1.98V, SR>48KHz /FLL Enable
  - Voltage range(VDDC): 1.1V ~ 1.98V, SR<48KHz /FLL Disable
  - Temperature range: -40°C ~ 85°C
  - WLCSP-42 (2.55x2.92mm)
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