TAS5755M - 2x50W(2x19W + 1x50W) Digital Input Class-D Audio Amplifier with Processing and 2.1 Mode Support

The TAS5755M is a single-chip flexible digital audio solution with integrated processingthat supports 2.1 (2 speakers + subwoofer), 2.0 or stereo (2 speakers) and mono (high powerspeaker) modes.

Its high efficiency, low 80 mΩ R_DSON and pad-up package allowsthe device to output up to 2 × 50 W or 1 × 100 W.

TAS5755M leverages 2 full H-bridges which are used for each channel in stereo mode. In2.1 mode, TAS5755M runs 2 independent speaker channels using 2 half-bridges while using afull-bridge to drive a subwoofer. Finally, in mono mode, TAS5755M supports pre-filter parallelbridge tied load (PBTL) using only one filter stage to reduce total system size and cost.

TAS5755M has integrated audio processing. It includes: signal mixing, DC blockingfilters, 2 × 8 + 1 × 2 biquads for equalization. Power limiting is implemented by leveraging atwo-band log-style DRC and a separate single-band DRC for the subwoofer channel.

• Reduced Sol
  • Single-chip 2.1, 2.0 and Mono Mode Capable
  • Single-filter in Mono (PBTL) Mode.
  • Pad-up Package and 80 mΩ R_DSON Enhances Thermal Performance
• High Output Power capable:
  • 2 × 19 W +1 × 50 W in 2.1 mode
    (2 × 4 Ω + 1 × 6 Ω, 24 V)
  • 2 × 50 W in 2.0 mode (2 × 6 Ω, 24 V)
  • 1 × 100 W in Mono Mode (1 × 2 Ω, 24 V)
  • Wide Voltage Range: 8 V to 26.4 V
• Audio Performance Audio:
  • THD+N ≤ 0.05% at 1 kHz (R_SPK = 8 Ω, POUT = 1 W, PVDD = 18 V)
  • ICN ≤ 50 µVRMS
  • Crosstalk ≤ - 67 dB
  • SNR ≥ 104 dB
  • BD Modulation Available, for Improved Audio Performance and Efficiency.
• Integrated Audio Processing:
  • 2 × 8 + 1 × 2 Biquads
  • Two-band + Single-band configurable Dynamic Range Control (DRC)
  • License-Free 3D Effects
  • Signal Mixing and DC blocking filter
  • Automatic Rate Detection
• Integrated Self-protection
  • Thermal Protection
  • Over-current Limit Protection
  • Under-voltage Protection

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