1 Features

• AEC-Q100 Qualified for Automotive Applications
  • Device Temperature: –55°C to 125°C Ambient
  • Device HBM Classification Level: ±2500 V
  • Device CDM Classification Level: ±500 V
• TAS5414C-Q1 – Single-Ended Input
• TAS5424C-Q1 – Differential Input
• Four-Channel Digital Power Amplifier
• Four Analog Inputs, Four BTL Power Outputs
• 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
• 44-Pin PSOP3 (DKE) Power SOP Package With Heat Slug Up for TAS5424C-Q1
• 64-Pin QFP (PHD) Power Package With Heat Slug Up for TAS5414C-Q1
• Designed for Automotive EMC Requirements
• ISO9000:2002 TS16949 Certified
• –40°C to 105°C Ambient Temperature Range

2 Applications

OEM/Retail Head Units and Amplifier Modules Where Feature Densities and System Configurations Require Reduction in Heat From the Audio Power Amplifier

3 Description

The TAS5414C-Q1 and TAS5424C-Q1 are four-channel digital audio amplifiers designed for use in automotive head units and external amplifier modules. They provide 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-Q1 uses single-ended analog inputs, whereas the TAS5424C-Q1 employs differential inputs for increased immunity to common-mode system noise. The digital 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 incorporates all the functionality needed to perform in the demanding OEM applications area. The devices have built-in load diagnostic functions for detecting and diagnosing misconnected outputs to help to reduce test time during the manufacturing process.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Power vs Efficiency