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The RT9120E is a high efficiency, I2S-input, stereo channel audio power amplifier delivering maximum 2x30W into 8Ω BTL speaker loads. It can deliver over 94% power efficiency at 2x20W and eliminate the need for heatsink and implement CMH mode to reduce pulse width at small signal, inductor current ripple is reduced and hence light load efficiency is improved.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, undervoltage protections and report error status.The RT9120E is a 3-wired device receiving all clocks from external sources with standard I2S, Left-justified, Right-justified or TDM formats. It can support wide input sampling rate from 8kHz to 192kHz.The RT9120E features one band DRC and flexible input mixer, and power clipping.The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 85°C.

应用

  • Wireless, Bluetooth Speakers
  • Soundbars, Notebooks, PC Speakers
  • Home Audio
主要规格
RT9120E
Status Active
Output Channels 2
Vin (min) (V) 4.5
Vin (max) (V) 26.4
Pout @THD+N=10% (W) 27
Pout @THD+N=1% (W) 23
SNR (dB) 113
Amplifier Type Class-D
Features Extra Low Noise;High PSRR;I2C;OCP;OTP;OVP;UVP
Package Type VQFN5x5-32
关键特性
  • CMH Mode for Lower Quiescent Current
  • Wide Input Supply Range: 4.5V to 26.4V
  • Support 1.8V and 3.3V I/O
  • Configurable 4 Different IC Slave Address
  • 1x53W, 1.0 Mode (4Ω, 22V, THD + N = 1%)
  • 2x30W, 2.0 Mode (8Ω, 24V, THD + N = 1%)
  • SNR Up to 113dB
  • THD + N is 0.03% at 1W
  • 35μV Noise Floor
  • Efficiency Up to 94% at 2x20W for 6Ω
  • High Light Load Efficiency at CMH Mode
  • RDS(ON) Low to 90mΩ
  • Sampling Frequency from 8kHz to 192kHz
  • Support TDM Format for Multi-Channel
  • Built-In Anti-Pop Function
  • Programmable Coefficients for DRC Filters
  • Built-In DC Blocking Filters
  • Built-In Thermal Fold Back control
  • Protection Features: UVLO, OVP, OCP, OTP, and DCP
  • Inductor-Less Application
  • VQFN-32L Thermally-Enhanced Package
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