TAS5753MD - 25W, 26V, Stereo, Open-Loop I2S Input Audio Class-D Amplifier with EQ, 3-Band AGL and Headphone Out

The TAS5753MD device is an efficient, digital-input audio amplifierfor driving stereo speakers configured as a bridge tied load (BTL). One serial data input allowsprocessing of up to two discrete audio channels and seamless integration to most digital audioprocessors and MPEG decoders. The device accepts a wide range of input data and data rates. A fullyprogrammable data path routes these channels to the internal speaker drivers.

The TAS5753MD device is a slave-only device receiving all clocks fromexternal sources. The TAS5753MD 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. The device has an integrated Directpath™ Headphone amplifier and linedriver to increase the system-levelintegration and reduce total solution costs.

• Audio Input/Output
  • Supports BTL Configuration With 4-Ω Load
  • One Stereo Serial Audio Input
  • I²C Address Selection Pin
  • Supports 44.1-kHz and 48-kHz Sample Rates (LJ/RJ/I²S)
• Headphone Amplifier and Line Driver
  • 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
  • I²C Serial Control Interface Operational Without MCLK
  • Automatic Rate Detection
  • Thermal, Short-Circuit, and Undervoltage Protection
  • 105-dB SNR, A-Weighted, Referenced to Full Scale (0 dB)
  • Up to 90% Efficient
  • AD, BD, and Ternary Modulation
  • PWM Level Meter
  • Operates from 4.5-V to 24-V PVDD

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