PCM1680 105dB SNR 8-Channel Audio DAC | TI.com

PCM1680
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
105dB SNR 8-Channel Audio DAC

 

Recommended alternative parts

  • PCM1681  -  Accepts TDM format, can be H/W controlled

Description

The PCM1680 is a CMOS, monolithic integrated circuit which features eight 24-bit audio digital-to-analog converters (DACs) and support circuitry in a small SSOP-28. The DACs use TI's enhanced multilevel delta-sigma (%#x394;) architecture to achieve excellent signal-to-noise performance and a high tolerance to clock jitter.

The PCM1680 accepts industry-standard audio data formats with 16-bit to 24-bit audio data. Sampling rates up to 200 kHz are supported. The PCM1680 provides a full set of user-programmable functions through a serial control port, using an SPI or I2C interface.

Features

  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 105 dB Typical
    • SNR: 105 dB Typical
    • THD+N: 0.002% Typical
    • Full-Scale Output: 3.9 VPP Typical
  • 4x/8x Oversampling Interpolation Filter:
    • Stop-Band Attenuation: -50 dB
    • Passband Ripple: ±0.04 dB
  • Sampling Frequency: 5 kHz to 200 kHz
  • System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, or 1152 fS with Autodetect
  • Zero Flags for Selectable Channel Combinations
  • Serial Port (SPI/I2C) for Mode Control
  • User-Programmable Functions:
    • Flexible Audio Data Formats
      • Right-Justified, I2S, and Left-Justified
      • 16-, 18-, 20-, and 24-Bit Audio Data
    • Digital Attenuation: Mode Selectable
      • 0 dB to -63 dB, 0.5-dB/step
      • 0 dB to -100 dB, 1-dB/step
    • Soft Mute
    • Digital De-Emphasis
    • Digital Filter Roll-Off: Sharp or Slow
  • Single Power-Supply Operation: 5-V Analog, 5-V Digital
  • Package: SSOP-28 (150 mil)
  • Pin-Compatible with PCM1780
  • APPLICATIONS
    • Integrated A/V Receivers
    • DVD Movie and Audio Players
    • HDTV Receivers
    • Car Audio Systems
    • DVD Add-On Cards for High-End PCs
    • Digital Audio Workstations
    • Other Multichannel Audio Systems

System Two, Audio Precision are trademarks of Audio Precision, Inc.
SPI is a trademark of Motorola.
I2C, I2S are trademarks of NXP Semiconductors.

Parametrics

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Part number Order DAC channels Analog inputs Analog outputs DAC SNR (Typ) (dB) Sampling rate (Max) (kHz) Control interface Resolution (Bits) Architecture Package size: mm2:W x L (PKG) Approx. price (US$)
PCM1680 Order now 8     0     8     105     192     SPI
I2C    
24     Delta-Sigma     28SSOP: 59 mm2: 6 x 9.9 (SSOP | 28)     1.99 | 1ku    
PCM1681 Order now 8     0     8     105     200     SPI
I2C
H/W    
24     Current Segment DAC     28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)     1.40 | 1ku    
PCM1690 Order now 8     0     8     113     192     SPI
I2C
H/W    
24     Current Segment DAC     48HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 48)     2.35 | 1ku