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.