TAS5754M Digital Input, Closed-Loop Class-D Amplifier with HybridFlow Processing and Ternary Modulation | TI.com

TAS5754M
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Digital Input, Closed-Loop Class-D Amplifier with HybridFlow Processing and Ternary Modulation

Digital Input, Closed-Loop Class-D Amplifier with HybridFlow Processing and Ternary Modulation - TAS5754M
Datasheet
 

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Description

The TAS5754M device is a high-performance, stereo closed-loop amplifier with integrated audio processor with PurePath™ HybridFlow architecture. To convert from digital to analog, it 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 via 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, reducing the idle current draw at the expense of slightly higher distortion.

The unique HybridFlow architecture allows the system designer to choose from several configurable DSP programs, specifically designed for use in popular audio end equipment like Bluetooth (BT) Speakers, Sound Bars, Docking Stations, Subwoofers. This 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-Terminal TSSOP provides excellent operation in the elevated ambient temperatures found in modern consumer electronic devices.

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Features

  • 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 Modulation with TAS5756M, 1SPW Modulation with TAS5754M
    • Supports 3-Wire Digital Audio Interface (No MCLK required)
  • High Performance Closed-Loop Architecture (PVDD = 12V, RSPK = 8 Ω, SPK_GAIN = 20dBV)
    • Idle Channel Noise = 62 µVrms (A-Wtd)
    • THD+N = 0.007 % (at 1 W, 1 kHz)
    • SNR = 103 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

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) PSRR (dB) Operating temperature range (C) Rating
TAS5754M Order now Digital Input     Class-D     Stereo     4.5     26.4     40     2     103     0.007     56     Software     Closed     2.9     3.63     75     192       -25 to 85     Catalog    
TAS3251 Order now Digital Input     Class-D
Smart Amp    
Stereo     12     38     175     1     108     0.01     12.5     Hardware     Closed     10.8     13.2     350     96     60     0 to 70     Catalog    
TAS5805M Order now Digital Input     Class-D     Stereo     4.5     26.4     23     4     107     0.03     16.5     I2C     Closed     4.5     26.4     45     96       -25 to 85     Catalog    
TAS5825M Order now Digital Input     Class-D
Smart Amp    
Stereo     4.5     26.4     38     4     111     0.02     14.8     Software     Closed     4.5     26.4     80     192       -25 to 85     Catalog