TAS5601 - 20-W Stereo Digital Amplifier Power Stage with Feedback

The TAS5601 is a 20-W (per channel) efficient, stereo digital amplifier power stage for driving 4 single-ended speakers, 2 bridge-tied speakers, or combination of single and bridge-tied loads. The TAS5601 can drive a speaker with an impedance as low as 4Ω. The high efficiency, >90% into 8-Ω loads, of the TAS5601 eliminates the need for an external heat sink.

A simple interface to a digital audio PWM processor is shown below. The TAS5601 is fully protected against faults with short-circuit protection and thermal protection as well as overvoltage and undervoltage protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

• Supports Multiple Output Configurations
  • 2×20-W into a 8-Ω BTL Load at 18 V
  • 4×10-W into a 4-Ω SE Load at 18 V
  • 2×10W (SE) + 1×20W (BTL) at 18 V
• Thermally Enhanced Package
  • DCA (56-pin HTTSOP)
• Wide Voltage Range: 10V—26V
  • No Separate Supply Required for Gate Drive
• Efficient Class-D Operation Eliminates Need for Heat Sinks
• Closed Loop Power Stage Architecture
  • Improved PSRR Reduces Power Supply Performance Requirements
  • High Damping Factor Provides for Tighter, More Accurate Sound With Improved Bass Response
  • Constant Output Power Over Variation in Supply Voltage
• Differential Inputs
• Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, and Short Circuit With Error Reporting
• APPLICATIONS
  • Flat-Panel, Rear-Projection, and CRT TV