Texas Instruments TAS6501-Q1 Audio Amplifier
Texas Instruments TAS6501-Q1 Audio Amplifier is a mono-channel, digital-input, Class-D amplifier that supports a 2MHz switching frequency. This device can assess output load conditions in PLAY mode, with or without audio, using independent real‑time diagnostics operating separately from the host and system. The TAS6501-Q1 audio amplifier operates at 4.5V to 19V supply voltage and delivers up to 15W (14.4V, 4Ω, 10% THD+N). This device monitors the output load condition while in PLAY mode, with or without audio, using real-time load diagnostics that operate independently of the host and audio input. The TAS6501-Q1 device is AEC-Q100 qualified for automotive applications. This amplifier is ideal for Acoustic Vehicle Alerting System (AVAS), Emergency call (eCall), automotive head unit, telematics control unit, and automotive cluster displays.
The TAS6501-Q1 can monitor the device's output current, PVDD voltage, and temperature, and report this data via TDM or I2S. This device is available in small pad-down TSSOP and QFN packages with wettable flanks, enabling a heatsink-free audio amplifier design.
Features
- AEC-Q100 qualified for automotive applications:
- -40°C to 125°C, TA temperature grade-1
- General operation:
- 4.5V to 19V supply voltage, 40V load dump
- Support for 1.8V and 3.3V I/O's
- I2C control with 8 address options
- <0.5W idle power loss at 14.4V, <5μA maximum 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, and short-to-ground detection
- Integrated DSP processing:
- Thermal monitoring and foldback
- PVDD monitoring and foldback
- Clip detection
- Low latency path, >70% reduced signal delay at 48kHz
- DC and AC Standby load diagnostics
- Audio inputs:
- I2S and TDM support up to TDM16
- 16-, 32-, 44.1-, 48-, 96-, and 192kHz input sample rates
- Audio outputs:
- 384kHz to 2MHz configurable output switching frequency
- 15W (14.4V, 4Ω, 10% THD+N)
- Audio performance:
- THD+N <0.02% (4Ω, 1W, 1kHz)
- 105dB SNR
- 41µVRMS at 14.4V, A-weighting output noise
- 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 meet CISPR25-L5 EMC specification
- Advanced spread-spectrum
Applications
- Acoustic Vehicle Alerting System (AVAS)
- Emergency call (eCall)
- Automotive head unit
- Telematics control unit
- Automotive cluster display
Simplified Diagram
