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Product details

Parameters

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 open-in-new Find other Audio DACs

Package | Pins | Size

SSOP (DB) 28 54 mm² 5.30 x 10.20 open-in-new Find other Audio DACs

Features

  • 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

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Description

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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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 24-Bit, 192kHz Sampling, Advanced Segment, Audio Stereo DAC datasheet (Rev. B) Oct. 30, 2006
User guides DEM-PCM/DSD1791/1793 EVM User's Guide Nov. 18, 2003

Design & development

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Software development

SUPPORT SOFTWARE Download
SLAC246.ZIP (255 KB)

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Software Defined Radio (SDR) OMAPL-138-based Hardware/Software Reference Design
TIDEP0040 Software Defined Radio (SDR) is a popular application within the wireless infrastructure market.  This hardware reference design, leveraging the real time signal processing of the TI DSP and its Universal Parallel Port (uPP), along with TI ADC and DAC, offers SDR algorithm developers a quick (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Vision Analytics OMAPL-138-based Hardware/Software Reference Design
TIDEP0038 Vision analytics is a critical function for many industrial automated applications including machine vision, inspection automation, surveillance and image processing.  This hardware/software design kit is optimized for vision analytic based applications and provides the all of hardware design (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SSOP (DB) 28 View options

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