EVB_RT9118GQW: 10W x 2 @ 8Ω, 8 ~ 17V in

The RT9118 is a 10W per channel, high efficiency Class D stereo audio amplifier for driving bridge tied load (BTL) speakers with a Headphone Amplifier. The RT9118 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 RT9118 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 RT9118 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 RT9118 will be automatically recovered.