loading
About Richtek | Contact Us |
 

The RT9120S 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 2x10W and eliminate the need for heatsink.

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 RT9120S 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 RT9120S features one band DRC and flexible input mixer, and power clipping.

Applications

  • LCD-TV
  • Monitors
  • Home Audio
  • Amusement Equipment
  • Electronic Music Equipment
Key Spec.
RT9120S
Status Active
Output Channels 2
Vin (min) (V) 4
Vin (max) (V) 26.4
Pout @THD+N=10% (W) 10
Pout @THD+N=1% (W) 30
SNR (dB) 113
Amplifier Type Class-D
Features OCP;OTP;OVP;UVP
Package Type VQFN5x5-32
Features
  • Wide Input Supply Range: 4.5V to 26.4V
  • Support 1.8V, 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 2x10W for 8Ω
  • RDS(ON) Low to 90mΩ
  • PWM Switching Frequency up to 1.536MHz
  • 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
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateDownload
30W, Stereo, Ultra Low Noise, High-Efficiency, Inductor-Less, I2S General-Purpose Class-D Audio Amplifier with DRC Control2021/09/23
Please confirm with our distributor or sales representative for actual stock status.
TOP