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Texas Instruments TAS5612A Class D Amplifiers

Texas Instruments TAS5612A Class D Amplifiers are high-performance, digital-input devices with integrated closed-loop feedback technology (PurePath™ HD). These devices have the ability to drive up to 125W stereo into 4Ω to 8Ω speakers from a single 32.5V supply. TI TAS5612A Class D amplifiers enable traditional AB-amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional Class D amplifiers. The distortion curve of these TI Class D amplifiers only increases once the output levels move into clipping. PurePath HD technology enables lower idle losses, increasing the device's efficiency. TI TAS5612A devices are designed for use in a variety of applications, including home theater systems, AV receivers, DVD/Blu-ray™ Disc receivers, mini combo systems, and active speakers and subwoofers.

Features

  • PurePath HD-enabled integrated feedback
    • Signal bandwidth up to 80kHz for high-frequency content from HD sources
    • Ultra-low 0.03% THD at 1W into 4Ω
    • Ultra-low 0.01% THD at 1W into 8Ω
    • Flat THD at all frequencies for natural sound
    • 80dB PSRR (BTL, no input signal)
    • >100dB (A-weighted) SNR
    • Click- and pop-free startup
  • Pin compatible with TAS5631, TAS5616 and TAS5614
  • Multiple configurations possible on the same PCB with stuffing options
    • Mono Parallel Bridge-Tied Load (PBTL)
    • Stereo Bridge-Tied Load (BTL)
    • 2.1 single-ended stereo pair and bridge-tied load subwoofer
  • Total output power at 10%THD+N
    • 250W in mono PBTL configuration
    • 125W per channel in stereo BTL configuration
  • Total output power in BTL configuration at 1%THD+N
    • 130W stereo into 3Ω
    • 105W stereo into 4Ω
    • 70W stereo into 6Ω
    • 55W stereo into 8Ω
  • >90% efficient power stage with 60-mΩ output MOSFETs
  • Self-protection design (including undervoltage, overtemperature, clipping, and short-circuit protection) with error reporting
  • EMI compliant when used with recommended system design
  • PDN (64-pin QFP) thermally enhanced package

Applications

  • Home theater systems
  • AV receivers
  • DVD/Blu-ray Disc receivers
  • Mini combo systems
  • Active speakers and subwoofers

Related Products

Texas Instruments TAS561 PurePath HD Amplifiers

Features PurePath™ HD enabled integrated feedback.

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Published: 2011-02-08 | Updated: 2022-03-11