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Richtek
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The RT9125H is a high-efficiency, I2S-input, stereo channel audio power amplifier delivering 2x50W into 4Ω BTL (Bridge Tied Load) speaker loads. It can deliver over 94% power efficiency and eliminate the need for heat-sink.Built-in protection circuits provide over-temperature, overcurrent, overvoltage, DC, and undervoltage protections and report error status.The RT9125H is an I2S device receiving all clocks from external sources. A fully programmable data path routes these channels to the internal speaker drivers.The RT9125H features three band DRC (Dynamic Range Compression) and flexible multi-band biquads for anti-clipping, power limiting, and speaker equalization.The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 85°C

應用

  • Bluetooth and WiFi Speakers
  • Subwoofers
  • Bookshelf Stereo Systems
  • Professional And Public Address (PA) Speakers
  • Active Crossover and Two-Way Speakers
主要規格
RT9125H
Status Active
Output Channels 2
Vin (min) (V) 4.5
Vin (max) (V) 26.4
Pout @THD+N=10% (W) 100
Pout @THD+N=1% (W) 50
SNR (dB) 113
Amplifier Type Class-D
Features I2C;OCP;OTP;OVP;UVLO;UVP
Package Type RLQFP10x10-64(PP)
Outline Dimension, Footprint, Drawing Download
關鍵特性
  • 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 (Time-Division Multiplexing) up to 32 Bits
    - Sampling Frequency from 8kHz to 96kHz
  • Excellent Audio Performance
    - 1x100W PBTL Mode at 2Ω at 23V, THD+N = 1%
    - 2x50W BTL Mode at 4Ω at 23V, THD+N = 1%
    - SNR ≥ 110dB
    - Efficiency ≥ 94%
  • Built-In Programmable DSP (Digital Signal Processor) Function
    - 36 Programmable Biquads for Speaker Equalization
    - Programmable Coefficients for DRC Filters and Supporting Multi-Compression Ratios
    - Programmable 128-Tap FIR
  • Excellent Self-Protection
    - UVLO, OVP, OCP, Thermal Foldback, OTP and DCP
    - Built-In DC Blocking Filters
  • Filter-Less Application
  • 64 Pin LQFP Package with the Exposed Thermal Pad
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