TAS5414C - 28-W Automotive Analog Single-Ended Input 4-Channel Class-D Amp with Load Dump Protection

The TAS5414C is a four-channel Class-D audio amplifier designed for use in automotive head units and external amplifier modules. It provides four channels at 23 W continuously into 4 Ω at less than 1% THD+N from a 14.4-V supply. Each channel can also deliver 38 W into 2 Ω at 1% THD+N. The TAS5414C uses single-ended analog inputs. The class-D PWM topology of the device 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 has a built-in load diagnostic functions for detecting and diagnosing misconnected outputs to help to reduce test time during the manufacturing process.

• Four-Channel Single-Ended Analog Input Class-D Audio Amplifier
• Typical Output Power at 10% THD+N
  • 28 W/Ch Into 4 Ω at 14.4 V
  • 50 W/Ch Into 2 Ω at 14.4 V
  • 79 W/Ch Into 4 Ω at 24 V
  • 150 W/Ch Into 2 Ω at 24 V (PBTL)
• Channels Can Be Paralleled (PBTL) for High-Current Applications
• THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω
• Patented Pop- and Click-Reduction Technology
  • Soft Muting With Gain Ramp Control
  • Common-Mode Ramping
• 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
  • Load-Dump Protection to 50 V
  • Fortuitous Open-Ground and -Power Tolerant
  • Patented Output DC Level Detection While Music Playing
  • Overtemperature Protection
  • Over- and Undervoltage Conditions
  • Clip Detection
• 64-Pin QFP (PHD) Power Package With Heat Slug Up
• –20°C to 105°C Ambient Temperature Range