TAS5412-Q1 - Two-Channel Automotive Digital Amplifier

The device is a two-channel digital audio amplifier designed for use in automotive head units and external amplifiers. It provides two channels at 28 W into 4 Ω at 10% THD+N from 14.4 V or 46 W into 2 Ω at 10% THD+N. The digital PWM topology provides dramatic improvements in efficiency over traditional linear amplifier solutions. This reduces the power dissipated by the amplifier by a factor of ten under typical music playback conditions. The device incorporates a patented PWM design that provides excellent power-supply rejection in the harsh electrical environment common in automotive applications. Applications attain high efficiency without the need for complicated power supply schemes. The design allows synchronization of multiple devices.

The device incorporates all the functionality needed to perform in the demanding OEM applications area, including load diagnostic functions for detecting and diagnosing misconnected outputs.

• TAS5412-Q1 – Single-Ended Input
• 2-Channel Digital Power Amplifier
• 2 Analog Inputs, 2 BTL Power Outputs
• Typical Output Power per Channel at 10%
  • 28 Watts/Ch, Into 4 Ω at 14.4 VDC
  • 46 Watts/Ch, Into 2 Ω at 14.4 VDC
  • 79 Watts/Ch, Into 4 Ω at 24 VDC
  • 150 Watts Into 2 Ω at 24 VDC PBTL
  • 90 Watts Into 1 Ω at 14.4 VDC PBTL
• THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω
• Patented Pop- and Click-Reduction Technology
• Patented AM Interference Avoidance
• Patented Cycle-by-Cycle Current Limit
• 75-dB PSRR
• Four-Address I²C Serial Interface for Device
  Configuration and Control
• Channel Gains: 12 dB, 20 dB, 26 dB, 32 dB
• Load Diagnostic Functions:
  • Output Open and Shorted Load
  • Output-to-Power and -to-Ground Shorts
  • Patented Tweeter Detection
• Protection and Monitoring Functions:
  • Short-Circuit Protection
  • 50-V Load-Dump Protection
  • Fortuitous Open-Ground and -Power Tolerant
  • Patented Output DC Level Detection While Music Is Playing
  • Overtemperature Protection
  • Over- and Undervoltage Protection
  • Clip Detection
• TAS5412-Q1 - 64-Pin QFP (PHD) PowerPAD Surface-Mount Package
• Pin Compatible With 4-Channel Devices
• Designed for Automotive EMC Requirements
• Will Be Qualified According to AEC-Q100
• ISO9000:2002 TS16949 Certified
• –40 to 105°C Ambient Temperature Range