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Texas Instruments TAS6511-Q1 Digital-Input Class-D Audio Amplifier

Texas Instruments TAS6511-Q1 Digital-Input Class-D Audio Amplifier supports 2MHz switching frequency, enabling a cost- and size-optimized single-channel audio amplifier design. The device operates from 4.5V to 19V and delivers up to 28W (14.4V, 4Ω, 10% THD+N) and up to 50W (14.4V, 2Ω, 10% THD+N). The device integrates DC and AC load diagnostics to determine the status of the connected load before enabling the output stage. Additionally, the device can monitor the output load condition while in PLAY mode with or without audio using real-time load diagnostics, which operates independently from the host and audio input.

Texas Instruments TAS6511-Q1 can monitor the device's output current, PVDD voltage, and temperature and reports this data through TDM or I2S. The integrated DSP of the TAS6511-Q1 enables advanced protection features such as PVDD foldback, thermal foldback, and Speaker Guard™ Pro power limiter. The DSP also enables an additional low-latency signal path, providing up to 70% faster signal processing at 48kHz for time-sensitive Active Noise Cancellation (ANC) and Road Noise Cancellation (RNC) applications. The device is available in a small pad-down TSSOP package, enabling a heatsink-free audio amplifier design.

Features

  • AEC-Q100 qualified for automotive applications with a temperature grade 1 of –40°C to +125°C, TA
  • General operation
    • 4.5V to 19V supply voltage, 40V load dump
    • Support for 1.8V and 3.3V I/O’s
    • I2C control with eight address options
    • < 0.5W idle power loss at 14.4V, < 5uA max PVDD shutdown loss
  • Output current sensing via I2S or TDM with no need for external circuitry
  • Real-time load diagnostics
    • Monitor output conditions while playing audio
    • Open load, shorted load, short-to-power, short-to-ground detection
  • Integrated DSP processing
    • Thermal monitoring and foldback
    • PVDD monitoring and foldback
    • Clip detection
    • Low Latency Path, >7 0% reduced signal delay at 48kHz
  • Audio inputs
    • I2S and TDM support up to TDM16
    • Input sample rates of 16kHz, 32kHz, 44.1kHz, 48kHz, 96kHz, and 192kHz
  • DC and AC Standby load diagnostics
  • Audio outputs
    • 384kHz to 2MHz configurable output switching frequency
    • Up to 7A channel output current
    • 28W (14.4V, 4Ω, 10% THD+N)
    • 50W (14.4V, 2Ω, 10% THD+N)
  • Audio performance
    • THD+N < 0.02% (4Ω, 1W, 1kHz)
    • 108dB SNR
    • Output noise of 41µVRMS at 14.4V, A-weighting
  • Protection
    • Output short protection
    • Speaker Guard™ Pro power limiter
    • Configurable overtemperature warning and shutdown
    • I2C temperature and supply voltage readout
    • DC offset, undervoltage, and overvoltage
  • Easily meets CISPR25-L5 EMC specification with advanced spread-spectrum

Applications

  • Acoustic vehicle alerting system (AVAS)
  • Emergency call (eCall)
  • Automotive head unit
  • Telematics control unit
  • Automotive cluster display

Additional Resources

Simplified Diagram

Block Diagram - Texas Instruments TAS6511-Q1 Digital-Input Class-D Audio Amplifier
發佈日期: 2025-03-04 | 更新日期: 2025-05-06