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  • 오디오 앰프 IC
  • WA20-7722
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WA20-7722

20W

WA20-7722

The WA20-7722 is a single chip full digital audio amplifier including power stage for stereo amplifier system. The WA20-7722 is integrated with versatile digital audio signal processing functions, high- performance, high-fidelity fully digital PWM modulator and high-power full-bridge MOSFET power stages. It delivers over 90% power efficiency on 2 x 20 watts in stereo mode without heat sink. The WA20-7722 receives digital serial audio data with wide input sampling rates (32kHz, 44.1kHz, 48kHz, 96kHz, 192kHz and 384kHz) through I S or TDM audio interface. The WA20-7722 has SRC, mixer, three-2 band DRC and Bi-Quad filters, which can be used to implement the essential audio signal processing functions like loudness control, compensation of a loud speaker response and parametric equalization. All the functions of the WA20-7722 can be controlled by internal register values via I²C host interface bus.

Parameters

Type I²S/TDM Audio AMP
Function Full Digital Audio AMP
Power 20W+20W
Supply Voltage 4.5~26.4V
Features Feedback, up to 384kHz, 60PEQ, 3B+Post AccDRC, ReBASS, OLD/SLD
Package 40QFN 6x6

Features

■ 2 CH Stereo (20W x 2 BTL)

■ Wide Operating Supply Voltage Range (4.5V to 26.4V)

■ Flexible Audio Interface

- Supports 96kHz / 192kHz / 384kHz Sampling Frequencies

- I²C / TDM Interface for Audio Input

- SDATA Generator (I²C output)

- SSRC

■ Floating-Point Operation

■ Up to 60 Programmable Bi-Quad Filters

- Loudness Control

- Speaker Compensation

- Advanced Parametric Equalizer

■ ReBASS (Remarkable BASS)

■ 3 Band Dynamic Range Control

- RS (Reinforced Sound) DRC

- Acc (Accelerated) DRC

- Delay Memory for Look-Ahead Control

■ Post Signal Processing for Optimized Speaker Control

■ Pre-Scaler and Post-Scaler

■ Various Useful Functions

- Volume and Soft Mute Control

- Power Meter

- Smart PWM Switch On / Off

■ DC Protection

- DC-Cut Filter

- Coefficient Memory Checksum

- Modulation Index Check

■ Protection Circuit

- OCP (Over Current Protection)

- OTP (Over Temperature Protection)

- OVP (Over Voltage Protection)

- UVP (Under Voltage Protection)

- OLD (Open Load Detection)

- SLD (Short Load Detection)

■ High Efficiency (>90%)

Application

  • TV

    TV

  • 모니터

    모니터

  • AI 스피커

    AI 스피커

  • 블루투스 스피커

    블루투스 스피커

  • 사운드바

    사운드바

  • 자동차

    자동차

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