Digital Input, Closed-Loop Class-D Amplifier with HybridFlow Processing and BD Modulation



The TAS5756M device is a high-performance, stereo closed-loop amplifier with integrated audio processor with architecture. To convert from digital to analog, the device uses a high performance DAC with Burr-Brown mixed signal heritage. It requires only two power supplies; one DVDD for low-voltage circuitry and one PVDD for high-voltage circuitry. It is controlled by a software control port using standard I2C communication. In the family, the TAS5756M uses traditional BD modulation, ensuring low distortion characteristics. The TAS5754M uses 1SPW modulation to reduce output ripple current, the expense of slightly higher distortion.

The unique HybridFlow architecture allows the system designer to choose from several configurable DSP programs that are specifically designed for use in popular audio end equipment such as bluetooth (BT) speakers, sound bars, docking stations, and subwoofers. This architecture combines the flexibility of a fully programmable device with the fast download time and ease of use of a fixed-function ROM device.

An optimal mix of thermal performance and device cost is provided in the 90 mΩ rDS(on) of the output MOSFETs. Additionally, a thermally enhanced 48-Pin HTSSOP provides excellent operation in the elevated ambient temperatures found in modern consumer electronic devices.

For all available packages, see the orderable addendum at the end of the datasheet. Please refer to SLAU577 for information regarding Audio Processing options available via the HybridFlow library.Tested on TAS5756MDCAEVM.


  • Flexible Audio I/O Configuration
    • Supports I2S, TDM, LJ, RJ Digital Input
    • 8 kHz to 192 kHz Sample Rate Support
    • Stereo Bridge Tied Load (BTL) or Mono Parallel Bridge Tied Load (PBTL) Operation
    • BD Amplifier Modulation
    • Supports 3-Wire Digital Audio Interface (No MCLK required)
  • High-Performance Closed-Loop Architecture (PVDD = 12V, RSPK = 8 Ω, SPK_GAIN = 20 dBV)
    • Idle Channel Noise = 56 µVrms (A-Wtd)
    • THD+N = 0.006 % (at 1 W, 1 kHz)
    • SNR = 104 A-Wtd (Ref. to THD+N = 1%)
  • PurePath HybridFlow Processing Architecture
    • Several Configurable MiniDSP Programs (called HybridFlows)
    • Download Time <100 ms (typ)
    • Advanced Audio Processing Algorithms
  • Communication Features
    • Software Mode Control via I2C Port
    • Two Address Select Pins – Up to 4 Devices
  • Robustness and Reliability Features
    • Clock Error, DC, and Short-Circuit Protection
    • Over Temperature and Overcurrent Protection

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Parametrics Compare all products in Digital I2S Input Class-D

Speaker Channels (Max)
Power to Bridge Tied Load (Max) (W)
Power to Parallel Bridge Tied Load (Max) (W)
Supported Bridge Tied Load (Min) (Ohms)
Closed/Open Loop
Control Interface
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Power Stage Supply (Max) (V)
Audio Input Type
Sampling Rate (Max) (kHz)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
TAS5756M TAS5754M TAS5760M TAS5766M TAS5768M TAS5780M
2    2    2    2    2    2   
40    40    21.9    20    20    20   
75    75    43.2    40    40    40   
3    3    4    3    3    30   
Closed    Closed    Closed    Closed    Closed    Closed   
Software    Software    Hardware
Software    Software    Software   
4.5    2.9    4.5    4.5    4.5    4.5   
26.4    3.63    26.4    26.4    26.4    26.4   
26.4    26.4    26.4    26.4    26.4    26.4   
Digital    Digital    Digital    Digital    Digital    Digital   
192    192    96    48    48    96   
-25 to 85    -25 to 85    -25 to 85    -25 to 85    -25 to 85    -25 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)    48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)    32HTSSOP: 89 mm2: 8.1 x 11(HTSSOP)
48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)   
48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)
48VQFN: 35 mm2: 5 x 7(VQFN)   
48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)
48VQFN: 35 mm2: 5 x 7(VQFN)   
48HTSSOP: 101 mm2: 8.1 x 12.5(HTSSOP)