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PCM1748

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106dB SNR Stereo DAC

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TAD5112 PREVIEW Low-power stereo audio DAC with 110dB dynamic range, and headphone and line driver 6-dB higher performance with integrated headphone amplifier, SW controlled, QFN package

PCM1748

ACTIVE
Data sheet Order now

Product details

Number of DAC channels 2 Analog inputs 0 Analog outputs 2 DAC SNR (typ) (dB) 100 Sampling rate (max) (kHz) 96 Control interface SPI Resolution (Bits) 24 Architecture Delta-Sigma Operating temperature range (°C) -25 to 85 Rating Catalog
Number of DAC channels 2 Analog inputs 0 Analog outputs 2 DAC SNR (typ) (dB) 100 Sampling rate (max) (kHz) 96 Control interface SPI Resolution (Bits) 24 Architecture Delta-Sigma Operating temperature range (°C) -25 to 85 Rating Catalog
SSOP (DBQ) 16 29.4 mm² 4.9 x 6
  • 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.
  • 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.

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.

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.
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Technical documentation

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Type Title Date
* Data sheet 24-Bit 96kHz Sampling Enhanced. Multilevel Delta-Sigma Audio DAC datasheet (Rev. B) 19 Apr 2005
Application note A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters 27 Sep 2000
Application note THD+N Versus Frequency Characteristics and Spectra of the PCM1717/18/19/20/23/27 27 Sep 2000

Design & development

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GUI for evaluation module (EVM)

SLAC236 — PCM1742/48EVM - Graphical User Interface (GUI) Software

Supported products & hardware

Supported products & hardware

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Audio DACs
PCM1742 — 106dB SNR Stereo DAC PCM1748 — 106dB SNR Stereo DAC
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Simulation model

PCM1748E IBIS Model

SLAC194.ZIP (9 KB) - IBIS Model
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SSOP (DBQ) 16 Ultra Librarian
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