The DSD1702 is a CMOS, monolithic, stereo digital-to-analog converter that supports both PCM audio data format and direct stream digital (DSD) audio data format.

The device includes an 8x digital interpolation filter for PCM signals. A digital DSD filter provides three different selectable frequency response options, followed by Burr-Brown’s enhanced multilevel delta-sigma modulator employing 4th-order noise shaping and 8-level amplitude quantization. This design achieves excellent dynamic performance and improved tolerance to clock jitter.

DSD1702 sampling rates of up to 192 kHz for PCM mode and 44.1 kHz × 64 for DSD mode are supported. A full set of user-programmable functions is accessible through a 3-wire serial control port, supporting register write functions.

The DSD1702 is available in a 20-lead QSOP package.

• Supports DSD and PCM Format
• Accepts 16-, 18-, 20- and 24-Bit Audio Data for PCM Format
• Accepts Direct Stream Digital (1 bit)
• Analog Performance (VCC = 5 V):
  • Dynamic Range: 106 dB Typ
  • SNR: 106 dB Typ
  • THD+N: 0.0015% Typ
  • Full-Scale Output: 3.1 V(pp) Typ
• Includes 8x Oversampling Digital Filter for PCM Format:
  • Stopband Attenuation: –60 dB
  • Passband Ripple: ±0.02 dB
• Including Digital DSD Filter For DSD Format:
  • Passband Choices: 50 kHz, 70 kHz or 60 kHz at –3 dB
• Sampling Frequency:
  • PCM Mode: 10 kHz to 200 kHz
  • DSD Mode: 64 × 44.1 kHz
• System Clock:
  • 128fs 192fs, 256fs, 384fs 512fs, 768fs
• Data Formats:
  • Standard, I2S, and Left-Justified for PCM Direct Stream Digital
• User-Programmable Mode Controls:
  • Digital Attenuation
  • Digital De-Emphasis
  • Digital Filter Roll-Off: Sharp or Slow Soft Mute
  • Zero Detect Mute
  • Zero Flags for Each Output
• Dual Supply Operation:
  • 5-V Analog, 3.3-V Digital
• 5-V Tolerant Digital Inputs
• Small 20-Lead QSOP Package
• APPLICATIONS
  • Universal A/V Players
  • SACD Players
  • Car Audio Systems
  • Other Applications Requiring 24-Bit Audio

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