TAS5751M 25-W, 8V-26.4V Open-Loop Digital Input Audio Power Amplifier with EQ and 3-Band AGL | TI.com

TAS5751M (ACTIVE) 25-W, 8V-26.4V Open-Loop Digital Input Audio Power Amplifier with EQ and 3-Band AGL

 

For a 23W 96kHz closed-loop inductor-less Stereo Class-D audio amplifier, with a lower total solution cost, see TAS5805M

For a higher performance 38W 192kHz closed-loop inductor-less , small solution size Stereo Class-D audio amplifier with flexible processing, seeTAS5825M

Description

The TAS5751M device is an efficient, digital-input audio amplifier for driving stereo speakers configured as a bridge tied load (BTL). In parallel bridge tied load (PBTL) in can produce higher power by driving the parallel outputs into a single lower impedance load. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers.

The TAS5751M device is a slave-only device receiving all clocks from external sources. The TAS5751M device operates with a PWM carrier between a 384-kHz switching rate and a 288-kHz switching rate, depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.

Features

  • Audio Input/Output
    • One-Stereo Serial Audio Input
    • Supports 44.1-kHz and 48-kHz Sample Rates (LJ/RJ/I²S)
    • Supports 3-Wire I²S Mode (no MCLK required)
    • Automatic Audio Port Rate Detection
    • Supports BTL and PBTL Configuration
    • POUT = 25 W at 10% THD+N
      • PVDD = 20 V, 8 Ω, 1 kHz
  • Audio/PWM Processing
    • Independent Channel Volume Controls With Gain of 24 dB to Mute in 0.125-dB Steps
    • Programmable Three-Band Automatic Gain Limiting (AGL)
    • 20 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
  • General Features
    • 106-dB SNR, A-Weighted, Referenced to Full Scale (0 dB)
    • I²C Serial Control Interface w/ two Addresses
    • Thermal, Short-Circuit, and Undervoltage Protection
    • Up to 90% Efficient
    • AD, BD, and Ternary Modulation
    • PWM Level Meter

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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
TAS5751M Order now Digital Input     Class-D     Stereo     8     26.4     25     4     106     0.03     23     Software     Open     3     3.6     65     48     0 to 85     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