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Texas Instruments DRV5825P Class-D Audio Amplifier

Texas Instruments DRV5825P Class-D Audio Amplifier is a stereo high-performance closed-loop Class-D amplifier with an integrated audio processor with up to 96kHz architecture. The powerful audio DSP core supports advanced audio processing. An integrated SRC (Sample rate convertor) detects the input sample rate change. Then, the Texas Instruments DRV5825P auto converts to the target sample rate, which DSP is running to avoid any audio artifacts. This process flow supports 2×15 BQs, adaptive I/V limiter based on Piezo speaker impedance and LC filter model, full-band AGL (Automatic Gain Limiter), and THD manager (Clipper).

Features

  • Flexible audio I/O
    • Supports 32, 44.1, 48, 88.2, 96kHz sample rates
    • I2S, LJ, RJ, TDM, SDOUT for audio monitoring or echo cancellation
    • Supports 3-wire digital audio interface (no MCLK required)
  • High-voltage, high-current piezo driver
    • 48VPP
    • Two 7.5A for Stereo 2.0 Mode
    • One 15A for 1.0 Mode
  • Adaptive I/V limiter
    • Adjustable limit threshold
    • Impedance and frequency-based current limiter
    • No gain attenuation until the limiter has been triggered
    • No external power resistor is needed
  • Excellent audio performance
    • THD+N ≤ 0.03% at VOUT = 2VRMS, 1kHz, PVDD = 12V
    • SNR ≥ 110dB (A-weighted), ICN ≤ 45µVRMS
  • Advanced processing features
    • SRC (Sample Rate Converter), DC blocking
    • Input mixer, output crossbar, level meter
    • 2 × 15 BQs, two post BQs, clipper
    • Adaptive I/V limiter, full band AGL
  • Flexible power supply configurations
    • 4.5V to 26.4V PVDD
    • 1.8V or 3.3V DVDD and I/O
  • Excellent Integrated self-protection
    • Over-current error (OCE)
    • Cycle-by-cycle current limit
    • Over-temperature warning (OTW)
    • Over-temperature error (OTE)
    • Under/over-voltage lock-out (UVLO/OVLO)
  • Easy system integration
    • I2C software control
    • Reduced solution size
      • Small 5 x 5mm package
      • No external power resistor is needed
      • No bulky electrolytic capacitors or large inductors are required for most applications

Applications

  • DTV
  • HDTV
  • UHD and multi-purpose monitors
  • Notebooks
  • Tablet PC

Functional Block Diagram

Block Diagram - Texas Instruments DRV5825P Class-D Audio Amplifier

Related Development Tool

Texas Instruments DRV5825PEVM Amplifier Evaluation Module (EVM)

Showcases the latest TI digital input Class-D closed-loop amplifier for a Piezo application.

Learn Moreabout Texas Instruments DRV5825PEVM Amplifier Evaluation Module (EVM) View Productsrelated to Texas Instruments DRV5825PEVM Amplifier Evaluation Module (EVM)
Published: 2020-09-25 | Updated: 2024-08-27