TAS2770 - Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense

The TAS2770 is a mono, digital input Class-D audio amplifieroptimized for efficiently driving high peak power into small loudspeakers. The Class-D amplifier iscapable of delivering 15.4 W of peak power into a 4-Ω load while sustaining 11.6 W continuouslywith less than 0.03 % THD+N at a battery voltage of 12.6 V.

Integrated speakervoltage and current sense provides for real time monitoring of loudspeaker behavior. A battery tracking peak voltage limiter with brown out prevention optimizes amplifierheadroom over the entire charge cycle of 2S or 3S battery systems.

Up to eight devices can share a common bus via either I²S/TDM+ I²C.

The TAS2770 device is available in a 26-pin, 0.4-mm pitch QFN for acompact PCB footprint.

• High-Performance Mono Class-D Amplifier
  • 20-W at 1% THD+N (4 Ω, 16 V)
  • 15.4-W at 1 % THD+N (4 Ω, 12.6 V)
  • 9.1-W at 1 % THD+N (8 Ω, 12.6 V)
  • 7.1-W at 1 % THD+N (4 Ω, 8.4 V)
  • 4-W at 1 % THD+N (8 Ω, 8.4 V)
• 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
• 32-µVrms A-Weighted Idle Channel noise
• 90-dB PSRR with 200 mV_PP Ripple at 20 - 20 kHz
• 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
• < 1 µA HW Shutdown VBAT Current
• 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
• Speaker Voltage and Current Sense
• Real-Time Diagnostics Using I/V Speaker Sense
  • Over Current
  • Short Circuit(short to power, short to ground and terminal-to-terminal short)
  • Over-Temperature
• VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
• 44.1-kHz to 192-kHz Sample Rates
• Flexible User Interfaces
  • I²S/TDM: 8 Channels (32-bit / 96 kHz)
  • I²C: 8 selectable Addresses
• MCLK Free Operation
• Low Pop and Click
• Power Supplies
  • VBAT: 4.5 V to 16 V
  • AVDD: 1.8 V
• Spread-Spectrum Low EMI Mode
• Thermal and Over Current Protection

All trademarks are the property of their respective owners.