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DSD1791

ACTIVE

113dB SNR Stereo Audio DAC (H/W Control)

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Data sheet

DSD1791

ACTIVE
Data sheet Order now

Product details

Number of DAC channels 2 Analog inputs 0 Analog outputs 2 DAC SNR (typ) (dB) 113 Sampling rate (max) (kHz) 192 Control interface SPI Resolution (Bits) 24 Architecture Advanced Segment Operating temperature range (°C) -25 to 85 Rating Catalog
Number of DAC channels 2 Analog inputs 0 Analog outputs 2 DAC SNR (typ) (dB) 113 Sampling rate (max) (kHz) 192 Control interface SPI Resolution (Bits) 24 Architecture Advanced Segment Operating temperature range (°C) -25 to 85 Rating Catalog
SSOP (DB) 28 79.56 mm² 10.2 x 7.8
  • Supports both DSD and PCM Formats
  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 113 dB
    • THD+N: 0.001%
    • Full-Scale Output: 2.1 V RMS (at Postamp)
  • Differential Voltage Output: 3.2 Vp-p
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: –82 dB
    • Pass-Band Ripple: ±0.002 dB
  • Sampling Frequency: 10 kHz to 200 kHz
  • System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
  • Accepts 16-, 20-, and 24-Bit PCM Audio Data
  • PCM Data Formats: Standard, I2S, and Left-Justified
  • DSD Format Interface Available
  • Optional Interface to External Digital Filter or DSP Available
  • TDMCA Interface Available
  • User-Programmable Mode Controls:
    • Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
    • Digital De-Emphasis
    • Digital Filter Rolloff: Sharp or Slow
    • Soft Mute/PCM Format
    • Zero Detect Mute/PCM Format
    • Zero Flag for Each Output/PCM and DSD Formats
  • Dual Supply Operation:
    • 5-V Analog, 3.3-V Digital
  • 5-V Tolerant Digital Inputs
  • Small 28-Lead SSOP Package
  • APPLICATIONS
    • A/V Receivers
    • SACD Players
    • DVD Players
    • HDTV Receivers
    • Car Audio Systems
    • Digital Multitrack Recorders
    • Other Applications Requiring 24-Bit Audio
  • Supports both DSD and PCM Formats
  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 113 dB
    • THD+N: 0.001%
    • Full-Scale Output: 2.1 V RMS (at Postamp)
  • Differential Voltage Output: 3.2 Vp-p
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: –82 dB
    • Pass-Band Ripple: ±0.002 dB
  • Sampling Frequency: 10 kHz to 200 kHz
  • System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
  • Accepts 16-, 20-, and 24-Bit PCM Audio Data
  • PCM Data Formats: Standard, I2S, and Left-Justified
  • DSD Format Interface Available
  • Optional Interface to External Digital Filter or DSP Available
  • TDMCA Interface Available
  • User-Programmable Mode Controls:
    • Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
    • Digital De-Emphasis
    • Digital Filter Rolloff: Sharp or Slow
    • Soft Mute/PCM Format
    • Zero Detect Mute/PCM Format
    • Zero Flag for Each Output/PCM and DSD Formats
  • Dual Supply Operation:
    • 5-V Analog, 3.3-V Digital
  • 5-V Tolerant Digital Inputs
  • Small 28-Lead SSOP Package
  • APPLICATIONS
    • A/V Receivers
    • SACD Players
    • DVD Players
    • HDTV Receivers
    • Car Audio Systems
    • Digital Multitrack Recorders
    • Other Applications Requiring 24-Bit Audio

The DSD1791 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The DSD1791 provides balanced voltage outputs, allowing the user to optimize analog performance externally. The DSD1791 accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The DSD1791 also accepts interface to external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through a three-wire serial control port. The DSD1791 also supports the time-division-multiplexed command and audio (TDMCA) data format.

The DSD1791 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The DSD1791 provides balanced voltage outputs, allowing the user to optimize analog performance externally. The DSD1791 accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The DSD1791 also accepts interface to external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through a three-wire serial control port. The DSD1791 also supports the time-division-multiplexed command and audio (TDMCA) data format.
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* Data sheet 24-Bit, 192kHz Sampling, Advanced Segment, Audio Stereo DAC datasheet (Rev. B) 30 Oct 2006
EVM User's guide DEM-PCM/DSD1791/1793 EVM User's Guide 18 Nov 2003

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