描述 Description

The DSD1608 is a CMOS, monolithic, 8-channel digital-to-analog converter which supports both PCM audio data format and direct stream digital (DSD) audio data format. The device includes an 8× digital interpolation filter and a digital DSD filter with three selectable frequency-response curves, followed by Texas Instruments? enhanced multilevel delta-sigma modulator, which employs 4th-order noise shaping and 8-level amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. Sampling rates up to 192 kHz for the PCM mode and 64 × 44.1 kHz for the DSD mode are supported. A full set of user-programmable functions is accessible through a 4-wire serial control port, which supports register write and read functions. The DSD1608 supports the time-division-multiplexed command and audio data (TDMCA) format. The DSD1608 is available in a 52-pin TQFP package.

特性 Features

? Supports DSD and PCM Formats
? Supports TDMCA
? Accepts 16-, 18-, 20- and 24-Bit Audio Data for PCM Format
? Analog Performance (VCC = 5 V):
? Dynamic Range: 108 dB, Typical
? SNR: 108 dB, Typical
? THD+N: 0.0012%, Typical
? Full-Scale Output: 4 Vpp, Typical

? Includes 8× Oversampling Digital Filter for PCM Format:
? Stopband Attenuation: –60 dB
? Passband Ripple: ±0.02 dB

? Includes Digital DSD FILTER for DSD Format:
? Passband: 50 kHz, 70 kHz, 60 kHz at –3 dB

? Sampling Frequency:
? PCM Mode: 10 kHz to 200 kHz
? DSD Mode: 64 × 44.1 kHz

? System Clock:
? 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS

? Data Formats:
? Standard, I2S, and Left-Justified for PCM Direct Stream Digital

? User-Programmable Mode Controls:
? Digital Attenuation
? Digital De-Emphasis
? Digital Filter Rolloff: Sharp or Slow Soft Mute
? Three Zero Flags

? Dual Supply Operation:
? 5-V Analog, 3.3-V Digital

? Package: 52-Pin TQFP
? APPLICATIONS
? Universal A/V Players
? SACD Players
? Car Audio Systems
? Other Applications Requiring 24-Bit Audio