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Product details

Parameters

Dynamic range (dB) 105 Digital supply (Min) (V) 3 Digital supply (Max) (V) 3.6 Operating temperature range (C) -40 to 85 open-in-new Find other PWM modulators

Package | Pins | Size

HTSSOP (DCA) 56 113 mm² 14 x 8.1 open-in-new Find other PWM modulators

Features

  • General Features
    • 8ch Asynchronous Sample Rate Converter
    • 8 Channel Audio Processing for 32-192 kHz
      (ARSC to 96kHz)
    • 4 Channel Native Audio Processing at 192kHZ
    • 30 kHz Audio Bandwidth for DTS-HD
      Compatibility
    • Energy Manager for Overall System Power
      Control
    • Power Supply Volume Control
  • Audio Input or Output
    • Up to Five Synchronous Serial Audio Inputs
      (10 Channels)
    • Up to One Synchronous Serial Audio Outputs
      (2 Channels)
    • I2S Master Mode When Used With External
      Crystal
    • Slave Mode 32-192KHz With Auto/Manual
      Sample Rate Detection
    • Eight Differential PWM Output That can
      Support AD or BD Modulation
    • Two Differential PWM Headphone Outputs
    • I2S Out for External Wireless Sub
    • PWM Output Supports Single Ended (S.E.) or
      Bridge Tied Load (BTL)
  • Audio Processing
    • Volume Control Range 18 dB to –127 dB
      (Master and Eight Channel Volume)
    • Bass and Treble Tone Controls With ±18-dB
      Range, Selectable Corner Frequencies
    • Configurable Loudness Compensation
    • Two Dynamic Range Compressors With Two
      Thresholds, Two Offsets, and Three Slopes
    • Seven Biquads Per Channel
  • PWM Processing
    • >105-dB Dynamic Range
    • THD+N < 0.1% (0–40 kHz)
    • 20-Hz–40-kHz, Flat Noise Floor for 32KHz –
      192KHz
    • Flexible Automute Logic With Programmable
      Threshold and Duration for Noise-Free
      Operation
    • Power-Supply Volume Control (PSVC) in High-
      Performance Applications
    • Adjustable Modulation Limit
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Description

The TAS5548 is an 8-channel Digital Pulse Width Modulator (PWM) with Digital Audio Processing and Sample Rate Converter that provides both advanced performance and a high level of system integration. TAS5548 is designed to support DTS-HD specification Blu-ray HTiB applications. The ASRC consists of two separate modules which handle 4 channels each. Therefore, it is possible to support up to two different input sampling rates.

Texas Instruments Power Stages are designed to work seamlessly with the TAS5548. The TAS5548 also provides a high-performance, differential output to drive an external, differential-input, analog headphone amplifier.

The TAS5548 supports AD, BD, and ternary modulation operating at a 384-kHz switching rate for 48-, 96-, and 192-kHz data. The external crystal used must be 12.288 MHz. The TAS5548 also features power-supply-volume-control (PSVC), which improves dynamic range at lower power level and can be used as part of a Class G power supply when used with closed-loop PWM input power stages.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet TAS5548 8-Channel HD Compatible Audio Processor with ASRC and PWM Output datasheet (Rev. A) Apr. 24, 2015
User guides TAS5548-5558EVM User's Guide (Rev. B) Jul. 31, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
99
Description

For consumer and prosumer audio customers who want improved multi-channel performance the TAS5548/TAS5558 are the industry's first PWM Modulators that provide 8 channels of advanced audio processing with integrated 8-channel Asynchronous Sample Rate conversion (ASRC). The TAS5548/TAS5558 support (...)

Features
  • Stand-alone board, nothing else is needed except for a USB cable and head phones
  • USB powered
  • I2S audio streams through USB port
  • Stereo channel output via 3.5mm headphone jack
  • Access to control signal gain and data format through EVM-software GUI
  • Used to evaluate both TAS5548 and TAS5558
  • Requires (...)
  • Design tools & simulation

    SIMULATION MODELS Download
    SLOM337.ZIP (88 KB) - IBIS Model
    SIMULATION TOOLS Download
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    Features
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    GERBER FILES Download
    SLOC279.ZIP (1092 KB)

    Reference designs

    REFERENCE DESIGNS Download
    Self-Booting Audio System
    TIDA-00609 The purpose of this TI Design is to provide the designer hardware and software tools that can be used as reference for audio systems. The new revision of the PurePath™ Console Motherboard (RevF) adds stand-alone, self-booting capabilities to allow making compelling demos with any EVM that is (...)
    document-generic Schematic document-generic User guide

    CAD/CAE symbols

    Package Pins Download
    HTSSOP (DCA) 56 View options

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