Stereo Audio DAC with Full Speed USB Interface, Single-Ended Headphone Output, and S/PDIF


Product details


Number of DAC channels (#) 0 Analog inputs 0 Analog outputs 2 DAC SNR (Typ) (dB) 0 Sampling rate (Max) (kHz) 48 Control interface HID, SPI Resolution (Bits) 16 Architecture USB 1.1 open-in-new Find other Audio DACs

Package | Pins | Size

TQFP (PJT) 32 81 mm² 9 x 9 open-in-new Find other Audio DACs


  • On-Chip USB Interface:
    • No Dedicated Device Driver Needed
    • Full-Speed Transceivers
    • Fully Compliant With USB 2.0 Specification
      • USB 1.1 Descriptors With USB Audio
        Class Support
    • Certified by USB-IF
    • Partially Programmable Descriptors
    • Adaptive Isochronous Transfer for Playback
    • Bus-Powered or Self-Powered Operation
  • Sampling Rates: 32 kHz, 44.1 kHz, and 48 kHz
  • On-Chip Clock Generator With Single 12-MHz
    Clock Source
  • Single Power Supply:
    • Bus-Powered: 5 V, Typical (VBUS)
    • Self-Powered: 3.3 V, Typical
  • 16-Bit Delta-Sigma Stereo DAC
    • Analog Performance at 5 V (Bus-Powered),
      3.3 V (Self-Powered):
      • THD + N: 0.006% RL > 10 kΩ, Self-
      • THD + N: 0.025% RL = 32 Ω
      • SNR = 98 dB
      • Dynamic Range: 98 dB
      • PO = 12 mW, RL = 32 Ω
    • Oversampling Digital Filter
      • Passband Ripple = ±0.04 dB
      • Stop-Band Attenuation = –50 dB
    • Single-Ended Voltage Output
    • Analog LPF Included
  • Multiple Functions:
    • Up to Eight Human Interface Device (HID)
      Interfaces (Model and Setting Dependent)
    • Suspend Flag
    • S/PDIF Out With SCMS
    • External ROM Interface (PCM2704C/6C)
    • Serial Programming Interface (PCM2705C/7C)
    • I2S Interface (Selectable on PCM2706C/7C)
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The PCM270xC are TI’s single-chip USB stereo audio digital-to-analog converters (DACs) with USB 2.0 compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some areas (for example, vendor ID/product ID) through the use of an external ROM (PCM2704C and PCM2706C) or serial peripheral interface (SPI) (PCM2705C and PCM2707C). The PCM270xC also employ SpAct architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog phase-locked loops (PLLs) with SpAct enable playback with low clock jitter.

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Technical documentation

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Type Title Date
* Data sheet PCM270xC Stereo Audio DAC With USB Interface, Single-Ended Headphone Output and S/PDIF Output datasheet (Rev. B) Aug. 25, 2015
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

Design & development

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Hardware development

document-generic User guide

The PCM2707EVM-U is an evaluation module for the PCM2707C USB audio codec.

The EVM is supported by Windows® XP, Windows® Vista, Windows® 7, OSX and most operating systems which are compatible with USB class audio devices.

The PCM2707EVM-U connects to a USB port of a PC. The USB interface provides power (...)

  • Full-featured evaluation module for the PCM2707C audio codec
  • USB connection to PC provides power, control, and streaming audio data for easy evaluation
    document-generic User guide

    The USB Type-C™ and Power Delivery (PD) MiniDock evaluation module (EVM) provides a complete reference solution for a USB Type-C dock including audio, USB data, power and video.  The EVM has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the (...)

    • Plug-and-play design
    • Bidirectional power capabilities
    • DRP full-featured USB-C & PD port
    • Dual video (up to 4K) through HDMI or miniDP
    • Flash update over Type-C

    Design tools & simulation

    SBFM014.ZIP (63 KB) - IBIS Model
    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 (...)
    • 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
    • (...)

    Reference designs

    USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design
    TIDA-01243 — The USB Type-C® and power delivery (PD) minidock reference design provides a reference for a USB Type-C dock including audio, USB data, power and video.  This reference design has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the primary (...)
    document-generic Schematic

    CAD/CAE symbols

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    TQFP (PJT) 32 View options

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