描述 Description

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

特性 Features

·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

PowerPAD is a trademark of Texas Instruments.