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FEATURES

Supports Both DSD and PCM Formats

24-Bit Resolution

Analog Performance:

? Dynamic Range:

? 132 dB (9 V rms, Mono)

? 129 dB (4.5 V rms, Stereo)

? 127 dB (2 V rms, Stereo)

? THD+N: 0.0004%

Differential Current Output: 7.8 mA p-p

8× Oversampling Digital Filter:

? Stop-Band Attenuation: –130 dB

? Pass-Band Ripple: ±0.00001 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

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

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 Player

DVD Players

HDTV Receivers

Car Audio Systems

Digital Multi-Track Recorders

Other Applications Requiring 24-Bit Audio

DESCRIPTION

The DSD1792 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 DSD1792 provides balanced

current outputs, allowing the user to optimize analog

performance externally. The DSD1792 accepts the PCM

and DSD audio data formats, providing easy interfacing to

audio DSP and decoder chips. The DSD1792 also

interfaces with 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 4-wire serial control port, which

supports register write and readback functions. The

DSD1792 also supports the time-division-multiplexed

command and audio (TDMCA) data format.