10W Stereo Class-D Speaker Driver with Headphone Amplifier


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The RT9118 is a 10W per channel, high efficiency Class D stereo audio amplifier for driving bridge tied load (BTL) speakers. The RT9118 can drive stereo speakers with load as low as 4Ω. Its high efficiency eliminates the need for an extra heat sink when playing music. The gain of the amplifier can be controlled by gain select pins. The outputs are fully protected against shorts to GND, PVCC, and output to output with an auto recovery feature and monitored output.

The RT9118 is available in the WQFN-28L 4x5 package.


  • LCD-TV
  • Monitors
  • Home Audio
  • Amusement Equipment
  • Electronic Music Equipment
  • LCD TV
Key Spec.
Status Active
Output Channels 2
Vin (min) (V) 8
Vin (max) (V) 17
Pout @THD+N=10% (W) 15
Pout @THD+N=1% (W) 7.5
SNR (dB) 95
Package Type WQFN4x5-28
  • 8V to 17V Input Supply Range
    ► 10W / CH for an 8Ω Load, 13V Supply at 10% THD +N
    ► 15W / CH for an 8Ω Load, 16V Supply at 10% THD +N
    ► 90% Efficiency Eliminates Need for Heat Sink
  • DC Detect Protection
  • Filter-Less Operation
  • Over-Temperature Protection (OTP) with Auto Recovery Option
  • Surface Mount 28-Lead WQFN Package
TitleLast UpdateShareDownload
10W Stereo Class-D Speaker Driver with Headphone Amplifier2016/11/22
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9118GQWWQFN4x5-281500 Not available Buy from Distributor