Smart Home Audio(325)




NAU8224YG is a stereo high efficiency filter-free Class-D audio amplifier, which is capable of driving a 4Ω load with up to 3.1W output power. This device provides chip enable pin with extremely low standby current and fast start-up time of 3.4ms.

NAU8224YG features a highly flexible 2 wire interface with many useful gain settings. The gain can be selected from 24dB to -62dB (plus mute) by using 2 wire interface and GS pin.

NAU8224YG is ideal for the portable applications of battery drive, as it has advanced features like 87dB PSRR, 91% efficiency, ultra-low quiescent current (i.e. 2.1mA at 3.7V for 2 channels) and superior EMI performance. It has the ability to configure the inputs in either single-ended or differential mode. 

Target Applications:

Portable Audio Device/Speaker
Portable Navigation Device
Tablet PC

Key Features:

Audio Input
  - Stereo Differential/Single Ended Input
  - DC PSRR Typ.@98dB
  - CMRR Typ.@80dB
Audio Output
  - Powerful Stereo Class-D Amplifier
  - 3.1W (4Ω @ 5V, 10% THD+N)
  - 1.26W (4Ω @ 3.7V, 1% THD+N)
  - 1.76W (8Ω @ 5V, 10% THD+N)
  - 0.76W (8Ω @ 3.7V, 1% THD+N)
  - Low Output Noise: 20 μVRMS @ 0dB gain
Advance Feature
  - Low Current Shutdown Mode
  - Click-and Pop Suppression
Operating Characteristics
  - Voltage range: 2.5V ~ 5.5V
  - Temperature range: -40°C ~ 85°C
  - Low Quiescent Current: 2.1mA@3.7V / 3.2mA@5V for 2 channels
  - QFN-20 (4x4mm)
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