EVB_RT9116GQW: 10W x 2 @ 8Ω, 8 ~ 17V in


The RT9116 is a 10W per channel, high efficiency Class D stereo audio amplifier for driving bridge tied load (BTL) speakers. The RT9116 Evaluation Board 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 RT9116 uses the three-level modulation (BD model) scheme that allows operation without external LC reconstruction when the amplifier is driving an inductive load. Moreover, the built-in spread spectrum modulation can efficiently reduce EMI and save the cost of the external inductor, replaced by ferrite beads. The RT9116 features over-current protection against output stage short-circuits conditions. When a short-circuit condition occurs, amplifier outputs will be switched to a Hi-Z state, and the short-circuit protection latch will be triggered. Once the short-circuit condition is removed, the RT9116 will be automatically recovered.


Manufacturer Richtek USA Inc.
Category Audio Amplifiers
Eval Board Part Number EVB_RT9116GQW-ND
Eval Board Supplier Richtek USA Inc.
Eval Board Normally In Stock
Amplifier Type Class D
Number of Outputs Stereo
Output Power (RMS) @ Load 15 W x 2 @ 8 Ω
Voltage In 8 ~ 17 V
THD+N (1kHz) @ Conditions < 0.2% @ 5 W (8 Ω, 12 V)
Features Filterless Output
Over Current Protection
Over Voltage Protection
Short Circuit Protection
Shutdown, Enable, Standby
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >85%, 12Vin, 8Ω @ 2 ~ 10 W
Component Count + Extras 50 + 0
Design Author Richtek USA Inc.
Application / Target Market Home Theater
LCD TV / Monitor
Powered Speakers
Standby Current [Typical] 10 µA
Quiescent Current [Typical] 10 mA
Standby Current [Maximum] 50 µA
Quiescent Current [Maximum] 15 mA
Main I.C. Base Part RT9116

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