50-W stereo, 100-W mono, 8- to 26.4-V, digital input open loop Class-D audio amplifier w/ 2.1 mode


Product details


Audio input type Digital Input Architecture Class-D Speaker channels (Max) 3 Power stage supply (Max) (V) 26.4 Power stage supply (Min) (V) 8 Load (Min) (ohms) 4 Output power (W) 50 SNR (dB) 104 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 32 Control interface I2C, Software Closed/open loop Open Analog supply (Min) (V) 3 Analog supply (Max) (V) 3.6 Sampling rate (Max) (kHz) 48 Operating temperature range (C) 0 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DFD) 56 113 mm² 14 x 8.1 open-in-new Find other Speaker amps


  • 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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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.

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TAS5825M ACTIVE 38-W stereo, 65-W mono, 4.5- to 26-V, digital input Class-D Smart Audio Amplifier w/ 192kHz arch This product is a next generation, 38-W stereo, closed-loop,192 kHz digital input Class-D audio amplifier with flexible processing

Technical documentation

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Type Title Date
* Datasheet TAS5755M 2 × 50W (2 × 19W + 1 × 50W) Digital Input Audio Amplifier With Integrated Audio Processor and 2.1 Mode Support datasheet (Rev. C) Apr. 27, 2018
User guide TAS5755EVM Evaluation Module (Rev. A) Oct. 18, 2017

Design & development

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Hardware development

document-generic User guide
The TAS5755M evaluation module demonstrates the TAS5755M device from Texas Instruments. The TAS5755M combines a high-performance PWM processor with a class-D audio power amplifier. This EVM can be configured with two single-ended (SE) speakers with a BTL subwoofers (2.1) or two bridge-tied speakers (...)
  • Channel evaluation module design
  • USB interface
  • Standard I2S data input using optical or coaxial inputs
  • Analog input through analog-to-digital converter
  • Subwoofer connection—the PWM terminal provides the PWM signal and power to an external subwoofer board
  • Access to control signal gain and data format (...)

Design tools & simulation

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  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
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  • Supports simultaneous analysis of multiple products
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