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The RT9120M is a high efficiency, I2S-input, stereo channel audio power amplifier delivering 2x20W into 8Ω BTL speaker loads. It can deliver over 92% power efficiency and eliminate the need for heat-sink.

The built-in anti-pop functions can reduce the speaker′s pop noise under all kind of scenarios. Built-in protection circuits can provide over-temperature, overcurrent, overvoltage, and undervoltage protections and report error status.

The RT9120M is a 3-wired device receiving all clocks from external sources with standard I2S, Left-justified, Right-justified and TDM formats. 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 RT9120M features one band DRC and flexible input mixer, and power limiting.

Applications

  • LCD-TV
  • Monitors
  • Home Audio
  • Amusement Equipment
  • Electronic Music Equipment
Key Spec.
RT9120M
Status Active
Output Channels 2
Vin (min) (V) 4.5
Vin (max) (V) 26.4
Pout @THD+N=10% (W) 9
Pout @THD+N=1% (W) 6.5
SNR (dB) 106
Amplifier Type Class-D
Features OCP;OTP;UVP;UVP
Package Type VQFN5x5-32
Features
  • Wide Input Supply Range: 4.5V to 26.4V
  • Support 1.8V, 3.3V I/O
  • I2S, LJ, RJ, TDM Digital Audio Interface
  • 2x20W at into 8Ω BTL at 20V
  • 2x9W at into 8Ω BTL at 12V
  • SNR Up to 108dB
  • THD + N is 0.03% at 1W
  • 45μV Noise Floor
  • Efficiency Up to 92% at 2x10W for 8Ω
  • Sampling Frequency from 8kHz to 192kHz
  • Built-In Anti-Pop Function for BTL BD Modulations
  • Flexible Input Mixer
  • Programmable Coefficients for DRC Filters and Supporting Multi-Compression Ratios
  • Built-In DC Blocking Filters
  • Built-in Thermal Fold Back Control
  • Protection Features: UVLO, OVP, OCP, OTP and DCP
  • Filter-Less Application
  • VQFN-32L Thermally-Enhanced Package
  • RoHS Compliant and Halogen Free
Please confirm with our distributor or sales representative for actual stock status.
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