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NAU8224

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The NAU8224 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.  The NAU8224 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.

The NAU8224 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. 

Data Sheet

  • Software

  • File name Version Update Download
  • NAU8224 Eval board GUI 1.1  Wed Aug 28 03:08:08 CST 2013
  • User Manual

  • File name Version Update Download
  • NAU8224 Stereo Class D Demo Board User Manual Sat Aug 24 08:52:04 CST 2013
  • Data Sheet

  • File name Version Update Download
  • NAU8224 Datasheet 1.0  Sat Aug 25 07:00:13 CST 2012
  • Development Tool

  • File name Version Update Download
  • NAU8224 Demo Board User's Guide 1.0  Tue Apr 12 07:18:49 CST 2016

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Part No Check Disty Description SNR(dB) Output Power (W) Gain (dB) Standby Current (uA) Operating Voltage (V) Temp ( °C) Development Tools Package
NAU8224 Check Disty 3.1W Stereo Filer-Free Class-D Audio Amplifier, 2 wire interface gain control with Differential / Single ended inputs 101 3.1W into 4Ω at 5V THD+N <10% 24 to -62dB <1 2.5 to 5.5 -40 to 85 NAU8224-EVB QFN20

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