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
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
SSOP (DB) 28 54 mm² 10.5 x 5.3
  • 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-
        Powered
      • 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)
  • 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-
        Powered
      • 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)

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.

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.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet PCM270xC Stereo Audio DAC With USB Interface, Single-Ended Headphone Output and S/PDIF Output datasheet (Rev. B) 25 Aug 2015
Application note Differences between PCM270x and PCM270xC 16 Aug 2011

Design & development

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

Evaluation board

PCM2705EVM-U — PCM2705 Evaluation Module

The PCM2704EVM-U and PCM2705EVM-U are evaluation modules for the PCM2704/5 USB audio codec’s.

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 PCM2704EVM-U and PCM2705EVM-U connect to a USB port of (...)

In stock
Limit: 1
Simulation model

PCM2705C IBIS Model

SBFM011.ZIP (54 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-00089 — Value Soundbar Reference Design Kit for Stereo or 2.1 Applications

This is a Value Soundbar reference design kit for Stereo or 2.1 applications, which can easily be reapplied for PC speakers, or MP3 Docks. This is a complete reference design, including all programming hardware required, so you can get to working within minutes, a prototype within hours, and (...)
Package Pins Download
SSOP (DB) 28 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos