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

The TAS5751M device is an efficient, digital-input audio amplifierfor 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 impedanceload. One serial data input allows processing of up to two discrete audio channels and seamlessintegration to most digital audio processors and MPEG decoders. The device accepts a wide range ofinput data and data rates. A fully programmable data path routes these channels to the internalspeaker drivers.

The TAS5751M device is a slave-only device receiving all clocks fromexternal sources. The TAS5751M device operates with a PWM carrier between a384-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 excellentdynamic range from 20 Hz to 20 kHz.

• 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
  • P_OUT = 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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