Voice ICs(260)

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The NAU8214 is a mono high efficiency filter-free Class-D audio amplifier with variable gain amplifier, which is capable of driving a 4Ω load with up to 2.9W output power. This device provides chip enable pin with extremely low standby current and fast start-up time of 4ms.The NAU8214 is ideal for the portable applications of battery drive, low quiescent current (i.e. 1.7mA at 3.6V), Max power limiting function for a given load and superior EMI performance. It has the ability to configure the inputs in either single-ended or differential mode.

NAU8214 is available in SOP-8 or QFN20 packages.


  • Smartphones
  • Tablet PCs
  • Personal Navigation Devices
  • Rugged hand held computer and two-way radios


  • Low Quiescent Current:
    - 1.4mA at 3.6V
    - 2.7mA at 5V
  • Powerful Mono Class-D Amplifier:
    - 2.9W (4Ω @ 5V, 10% THD+N)
    - 2.3W (4Ω @ 5V, 1% THD+N)
    - 1.7W (8Ω @ 5V, 10% THD+N)
    - 1.38W (8Ω @ 5V, 1% THD+N)
    - 1.48 W (4Ω @ 3.6V, 10% THD+N)
    - 1.2 W (4Ω @ 3.6V, 1% THD+N)
    - 0.87 W (8Ω @ 3.6V, 10% THD+N)
    - 0.71 W (8Ω @ 3.6V, 1% THD+N)
  • Low Output Noise: 56 µVRMS (A –Weighted @3.6V)
  • 82dB PSRR @217Hz
  • Low Current Shutdown Mode
  • Click-and Pop Suppression
  • Max Power limiting feature