PCM2702 105dB SNR Stereo USB2.0 FS DAC with line-out (Self-powered) | TI.com

PCM2702 (NRND)

105dB SNR Stereo USB2.0 FS DAC with line-out (Self-powered)

105dB SNR Stereo USB2.0 FS DAC with line-out (Self-powered) - PCM2702
 

Not Recommended for New Designs (NRND)

Replaced By PCM2704 – The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.
PCM2705 – The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.
PCM2706 – The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.
PCM2707 – The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

Description

The PCM2702 is a single chip digital-to-analog converter offering two D/A output channels and an integrated USB 1.0 compliant interface controller. The newly developed SpAct™ (Sampling Period Adaptive Controlled Tracking) system recovers a stable, low-jitter clock for internal PLL and DAC operation from the USB interface audio data.

The PCM2702 is based upon Texas Instruments Enhanced Multi-level Delta-Sigma Modulator, an 8x oversampling digital interpolation filter, and an analog output low-pass filter.

The PCM2702 can accept a 48kHz, 44.1kHz and 32kHz sampling rates, using either 16-bit stereo or monaural audio data. Digital attenuation and soft-mute features are included, and are controlled via USB audio class request.

Features

  • INTEGRATED USB INTERFACE:
    • Full-Speed Transceiver Supports 12Mbps Data Transfer
    • Fully Compliant with the USB 1.0 Specification
    • Adaptive Mode for Isochronous Transfer
    • Self-Powered Device
  • ACCEPTS 16-BIT STEREO AND MONO USB AUDIO DATA STREAMS
  • ANALOG PERFORMANCE (VCC = 5V):
    • Dynamic Range: 100dB (typ at 16-bit)
    • SNR: 105dB (typ)
    • THD+N: 0.002% (typ at 16-bit)
    • Full-Scale Output: 3.1VPP
  • 8X OVERSAMPLING DIGITAL FILTER:
    • Passband: 0.454fS
    • Stopband: 0.546fS
    • Passband Ripple: ±0.002dB
    • Stopband Attenuation: \x9682dB
  • SAMPLING RATE (FS): 32kHz, 44.1kHz, 48kHz
  • ON-CHIP CLOCK GENERATOR WITH SINGLE 12MHz CLOCK SOURCE
  • MULTI-FUNCTIONS:
    • Digital Attenuator: 0dB to \x9664dB, 1dB/step
    • Soft Mute
    • Zero Flag
    • Suspend Flag
    • Playback Flag
  • DUAL POWER SUPPLIES:
    • +5V for Analog Portion
    • +3.3V for Digital Portion
  • PACKAGE: SSOP-28
  • APPLICATIONS
    • STAND-ALONE USB AUDIO SPEAKERS
    • CRT/LCD INTEGRATED USB AUDIO SPEAKERS
    • USB AUDIO AMPLIFIERS
    • OTHER USB AUDIO APPLICATIONS

Patents Pending.
SpAct is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.

View more