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

TAS5755M (ACTIVE)

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

 

Special note

Next generation with Hybrid Modulation, higher performance and more features: TAS5825M.

Description

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

Its high efficiency, low 80 mΩ RDSON and pad-up package allows the 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. In 2.1 mode, TAS5755M runs 2 independent speaker channels using 2 half-bridges while using a full-bridge to drive a subwoofer. Finally, in mono mode, TAS5755M supports pre-filter parallel bridge 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 blocking filters, 2 × 8 + 1 × 2 biquads for equalization. Power limiting is implemented by leveraging a two-band log-style DRC and a separate single-band DRC for the subwoofer channel.

Features

  • Reduced Sol
    • Single-chip 2.1, 2.0 and Mono Mode Capable
    • Single-filter in Mono (PBTL) Mode.
    • Pad-up Package and 80 mΩ RDSON 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 (RSPK = 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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Parametrics

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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) SNR (dB) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) Power to parallel bridge tied load (Max) (W) Sampling rate (Max) (kHz) Operating temperature range (C) Rating
TAS5755M Order now Digital Input     Class-D     3     8     26.4     50     4     104     0.05     32     I2C
Software    
Open     3     3.6     70     48     0 to 125     Catalog    
TAS5711 Order now Digital Input     Class-D     3     8     26     20     4     106     0.06     29     Software     Open     3     3.6     42.8     48     0 to 85     Catalog    
TAS5721 Order now Digital Input     Class-D     3     4.5     26.4     10     4     106     0.07     21     Software     Open     3     3.6     30     48     0 to 85     Catalog    
TAS5731M Order now Digital Input     Class-D     Stereo     8     26.4     30     2     104     0.03     27     Software     Open     3     3.6     70     48     -40 to 85     Catalog