TAS2560 - 5.6W Class-D Mono Audio Amplifier with IV Sense

The TAS2560 is a low-power, high-performance, digital input, boosted Class-D Audioamplifier that can be easily implemented in both mono and stereo (x2) applications. The devicefeatures an ultra low-noise audio DAC and Class-D power amplifier which incorporates speakervoltage and current sensing feedback for use with speaker protection algorithms.

A Class-H boost converter generates the Class-D amplifier supply rail. When the audiosignal requires only a lower Class-D output power, system efficiency is improved by deactivatingthe boost and connecting VBAT directly to the Class-D amplifier supply. When higher audio outputpower is required, the multi-level boost re-activates tracking the signal to provide the additionalvoltage to the load.

A configurable on-chip Battery Guard system reduces the audio output power during theperiods of low battery voltage to minimize the battery dropping below system brownout conditions.Additionally, faults such as brownout, over-current, and over-temperature can be reported back tothe host processor using the IRQ pin. All protection statuses are available via a registerread.

• Ultra Low-Noise Mono Boosted Class-D Amplifier
  • 5.6 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω Load from 4.2-V Supply
  • 3.7 W at 1% THD+N and 4.5 W at 10% THD+N into 8-Ω Load from 4.2-V Supply
• Output Noise for DAC + Class-D(ICN) is 16.2 µV
• DAC + Class-D SNR 111 dB at 1%THD+N / 8 Ω
• THD+N –89 dB at 1 W / 8 Ω with Flat Frequency Response
• Post-Filter Feedback (PFFB)
• PSRR 110 dB for 200 mVpp Ripple at 217 Hz
• Input Sample Rates from 8 kHz to 96 kHz
• High Efficiency Class-H Boost Converter
  • Automatically Adjusts Class-D Supply
  • Multi-level Tracking to Improve Efficiency
• Built-In Speaker Sense
  • Measures Speaker Current and Voltage
  • Measures VBAT Voltage, Chip Temperature
• Built-In Automatic Gain Control (AGC)
  • Limits Battery Current Consumption
• Adjustable Class-D Switching Edge-Rate Control
• Power Supplies
  • Boost Input: 2.9 V to 5.5 V
  • Analog/Digital: 1.65 V to 1.95 V
  • Digital I/O: 1.62 V to 3.6 V
• Thermal, Short-Circuit, and Under-Voltage Protection
• I2S, Left-Justified, Right-Justified, DSP, and TDM, and PDM
• I2C Interface for Register Control
• Stereo Configuration Using Two TAS2560 Devices

All trademarks are the property of their respective owners.