描述

The TAS5342A is a high-performance, integrated stereo digital amplifier power stage designed to drive a 4-Ω bridge-tied load (BTL) at up to 100 W per channel with low-harmonic distortion, low-integrated noise, and low-idle current.

The TAS5342A has a complete protection system integrated on-chip, safeguarding the device against a wide range of fault conditions that could damage the system. These protection features are short-circuit protection, over-current protection, under voltage protection, over temperature protection, and a loss of PWM signal (PWM activity detector).

A power-on-reset (POR) circuit is used to eliminate power-supply sequencing that is required for most power-stage designs.

特性

• Total Power Output (Bridge Tied Load)
  • 2 × 100 W at 10% THD+N Into 4 Ω
  • 2 × 80 W at 10% THD+N Into 6 Ω
  • 2 × 65 W at 10% THD+N Into 8 Ω
• Total Power Output (Single Ended)
  • 4 × 40 W at 10% THD+N Into 3 Ω
  • 4 × 30 W at 10% THD+N Into 4 Ω
• Total Power Output (Parallel Mode)
  • 1 × 200 W at 10% THD+N Into 2 Ω
  • 1 × 160 W at 10% THD+N Into 3 Ω
• >110 dB SNR (A-Weighted With TAS5518 Modulator)
• <0.1% THD+N (1 W, 1 kHz)
• Supports PWM Frame Rates of 192 kHz to 432 kHz
• Resistor-Programmable Current Limit
• Integrated Self-Protection Circuitry, Including:
  • Under Voltage Protection
  • Overtemperature Warning and Error
  • Overload Protection
  • Short-Circuit Protection
  • PWM Activity Detector
• Standalone Protection Recovery
• Power-On Reset (POR) to Eliminate System Power-Supply Sequencing
• High-Efficiency Power Stage (>90%) With 80-mΩ Output MOSFETs
• Thermally Enhanced Package 44-Pin HTSSOP (DDV)
• Error Reporting, 3.3-V and 5-V Compliant
• EMI Compliant When Used With Recommended System Design