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
Postamplifier)
Differential Voltage Output: 3.2 V p-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 Audio Data
PCM Data Formats: Standard, I2S, and
Left-Justified
DSD Format Interface Available
Optional Interface to External Digital Filter or
DSP Available
I2C-Compatible Serial Port
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
− Zero Flags for Each Output in 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

DESCRIPTION
The DSD1793 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 DSD1793 provides balanced
voltage outputs, allowing the user to optimize analog
performance externally. The DSD1793 accepts the PCM
and DSD audio data formats, providing easy interfacing to
audio DSP and decoder chips. The DSD1793 also accepts
interfaces 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 an I2C-compatible serial control port.