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TI(德州仪器) PCM1748
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  • TI(德州仪器) PCM1748
  • TI(德州仪器) PCM1748
  • TI(德州仪器) PCM1748
  • TI(德州仪器) PCM1748
  • TI(德州仪器) PCM1748
  • TI(德州仪器) PCM1748
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PCM1748

PCM1748

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106dB SNR 立体声 DAC

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  • 封装 | 引脚 | 尺寸

The PCM1748 is a CMOS, monolithic, integrated circuit which includes stereo digital-to-analog converters (DAC) and support circuitry in a small SSOP-16 package. The data converters use Texas Instruments' enhanced multilevel delta-sigma architecture that employs fourth-order noise shaping and 8-level amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1748 accepts industry-standard audio data formats with 16- to 24-bit data, providing easy interfacing to audio DSP and decoder chips. Sampling rates up to 100 kHz are supported. A full set of user-programmable functions is accessible through a 3-wire serial-control port that supports register write functions.

  • 24-Bit Resolution
  • Analog Performance (VCC = 5 V):
    • Dynamic Range:
      • 106 dB, Typical (PCM1748KE)
      • 100 dB, Typical (PCM1748E)
    • SNR:
      • 106 dB, Typical (PCM1748KE)
      • 100 dB, Typical (PCM1748E)
    • THD+N:
      • 0.002%, Typical (PCM1748KE)
      • 0.003%, Typical (PCM1748E)
    • Full-Scale Output: 3.1 Vp-p, Typical
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: -55 dB
    • Pass-Band Ripple: ±0.03 dB
  • Sampling Frequency: 5 kHz to 100 kHz
  • System Clock: 256 fS, 384 fS, 512 fS, 768 fS With Autodetect
  • Accepts 16-, 18-, 20-, and 24-Bit Audio Data
  • Data Formats: Standard, I2S, and Left-Justified
  • User-Programmable Mode Controls:
    • Digital Attenuation: 0 dB to -63 dB, 0.5 dB/Step
    • Digital De-Emphasis
    • Digital Filter Rolloff: Sharp or Slow
    • Soft Mute
    • Zero Flags for Each Output
  • Dual-Supply Operation:
    • 5-V Analog
    • 3.3-V Digital
  • 5-V Tolerant Digital Inputs
  • Small SSOP-16 Package
  • APPLICATIONS
    • AV Receivers
    • DVD Movie Players
    • DVD Add-On Cards for High-End PCs
    • HDTV Receivers
    • Car Audio Systems
    • Other Applications Requiring 24-Bit Audio

FilterPro is a trademark of Texas Instruments.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
All trademarks are the property of their respective owners.

Number of DAC channels2
Analog inputs0
Analog outputs2
DAC SNR (typ) (dB)100
Sampling rate (max) (kHz)96
Control interfaceSPI
Resolution (Bits)24
ArchitectureDelta-Sigma
Operating temperature range (°C)-25 to 85
RatingCatalog
SSOP (DBQ)1629.4 mm² 4.9 x 6
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