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The RT9121 is a high efficiency, I2S-input, stereo channel audio power amplifier delivering 2x30W into 8Ω BTL speaker loads. It can deliver over 94% power efficiency and eliminate the need for heat-sink.Built-in protection circuits can provide over-temperature, overcurrent, overvoltage, DC and undervoltage protections and report error status.The RT9121 is an I2S device receiving all clocks from external sources. It can support both master and slave mode with wide input sampling rate from 8kHz to 192kHz. A fully programmable data path routes these channels to the internal speaker drivers.The RT9121 features three band DRC and flexible multi-band biquads for anti-clipping, power limiting, and speaker equalization.
Flexible Power Supply Range ► PVDD from 4.5V to 26.4V ► DVDD and I/O, 1.8V or 3.3V
Support Wide Range Audio Format ► Bit Resolution Up to 32 Bits ► Support TDM Up to 32 Bit ► Sampling Frequency from 8kHz to 192kHz
Excellent Audio Performance ► 2x30W at into 8Ω BTL at 24V ► SNR ≥ 110dB ► Efficiency ≥ 94%
Built-in Programmable DSP Function ► 40 Programmable Biquads for Speaker Equalization ► Programmable Coefficients for DRC Filters and Supporting Multi-Compression Ratios ► Programmable 256-taps FIR
Excellent Self-Protection ► UVLO, OVP, OCP, thermal foldback, OTP and DCP ► Built-In DC Blocking Filters
Filter-Less Application
Hifi-3 DSP Process, 160kB SRAM
Adjustable PWM frequency up to 1.5MHz
VQFN-48L Thermally-Enhanced Package
RoHS Compliant and Halogen Free
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