TAS5504A Status: ACTIVE

Product Information

Features

• Audio Input/Output
  • Automatic Master Clock Rate and Data
    Sample Rate Detection
  • Four Serial Audio Input Channels
  • Four PWM Audio Output Channels
  • Headphone PWM Output to Drive an External
    Differential Amplifier Like the TPA112
  • PWM Outputs Support Single-Ended and
    Bridge-Tied Loads
  • 32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-,
    and 192-kHz Sampling Rates
  • Data Formats: 16-, 20-, or 24-Bit Left-Justified,
    I²S, or Right-Justified Input Data
  • 64 × f_S Bit-Clock Rate
  • 128, 192, 256, 384, 512, and 768 × f_S Master
    Clock Rates (up to a Maximum of 50 MHz)
• Audio Processing
  • 48-Bit Processing Architecture With 76 Bits
    of Precision for Most Audio-Processing Features
  • Volume Control Range: 36 dB to –109 dB
    • Master Volume Control Range of 18 dB
      to –100 dB
    • Four Individual Channel Volume Control
      Ranges of 18-dB to –109-dB
  • Programmable Soft Volume and Mute Update Rates
  • Two Bass and Treble Tone Controls With ±18-dB Range,
    Selectable Corner Frequencies, and Second-Order Slopes
    • L, R, and C
    • Sub
  • Configurable Loudness Compensation
  • Two Dynamic Range Compressors With Two Thresholds,
    Two Offsets, and Three Slopes
  • Seven Biquads per Channel
  • 8 × 4 Input Crossbar Mixer. Each Signal Processing
    Channel Input Can Be Any Ratio of the Eight Input Channels
  • 4 × 2 Output Mixer – Channels 1 and 2. Each Output
    Can Be Any Ratio of Any Two Signal-Processed Channels.
    It Is Recommended to Use the Pass-Through Output Mixer
    Configuration.
  • 4 × 3 Output Mixer – Channels 3 and 4. Each Output
    Can Be Any Ratio of Any Three Signal-Processed Channels. It Is
    Recommended to Use the Pass-Through Output Mixer Configuration.
  • Three Coefficient Sets Stored on the Device Can Be Selected
    Manually or Automatically (Based on Specific Data Rates)
  • DC Blocking Filters
  • Able to Support a Variety of Bass-Management Algorithms
• PWM Processing
  • 32-Bit Processing PWM Architecture With
    40 Bits of Precision
  • 8× Oversampling With 5th-Order Noise Shaping at
    32 kHz–48 kHz, 4× Oversampling at 88.2 kHz and 96 kHz,
    and 2× Oversampling at 176.4 kHz and 192 kHz
  • >102-dB Dynamic Range
  • THD+N < 0.1%
  • 20-Hz–20-kHz Flat Noise Floor for 44.1-, 48-,
    88.2-, 96-, 176.4-, and 192-kHz Data Rates
  • Digital De-Emphasis for 32-, 44.1-, and
    48-kHz Data Rates
  • Flexible Automute Logic With Programmable Threshold
    and Duration for Noise-Free Operation
  • Intelligent AM Interference Avoidance
    System Provides Clear AM Reception
  • Power-Supply Volume-Control (PSVC) Support for Enhanced
    Dynamic Range in High-Performance Applications
  • Adjustable Modulation Limit
• General Features
  • Automated Operation With an Easy-to-Use
    Control Interface
  • I²C Serial Control Slave Interface
  • Integrated AM Interference Avoidance
  • Single 3.3-V Power Supply
  • 64-Pin TQFP Package
  • 5-V Tolerant Inputs

Description

The TAS5504A is a four-channel digital pulse-width modulator (PWM) that provides both advanced performance and a high level of system integration. The TAS5504A is designed to interface seamlessly with most audio digital signal processors. The TAS5504A automatically adjusts control configurations in response to clock and data-rate changes and idle conditions. This enables the TAS5504A to provide an easy-to-use control interface with relaxed timing requirements.

The TAS5504A can drive four channels of H-bridge power stages. Texas Instruments power stages are designed to work seamlessly with the TAS5504A. The TAS5504A supports either the single-ended or bridge-tied-load configuration. The TAS5504A also provides a high-performance differential output to drive an external differential-input analog headphone amplifier, such as the TPA112.

The TAS5504A uses AD modulation operating at a 384-kHz switching rate for 48-, 96-, and
192-kHz data. The 8× oversampling combined with the 5th-order noise shaper provides a broad, flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.

The TAS5504A is a clocked, slave-only device. The TAS5504A receives MCLK, SCLK, and LRCLK from other system components. The TAS5504A accepts master clock rates of 128, 192, 256, 384, 512, and 768 f_S. The TAS5504A accepts a 64-f_S bit clock.

The TAS5504A allows for extending the dynamic range by providing a power-supply volume-control (PSVC) output signal.