描述 Description

The PCM1680 is a CMOS, monolithic integrated circuit which features eight 24-bit audio digital-to-analog converters (DACs) and support circuitry in a small SSOP-28. The DACs use TI's enhanced multilevel delta-sigma (%#x394;) architecture to achieve excellent signal-to-noise performance and a high tolerance to clock jitter.The PCM1680 accepts industry-standard audio data formats with 16-bit to 24-bit audio data. Sampling rates up to 200 kHz are supported. The PCM1680 provides a full set of user-programmable functions through a serial control port, using an SPI or I2C interface.

特性 Features

? 24-Bit Resolution
? Analog Performance:
? Dynamic Range: 105 dB Typical
? SNR: 105 dB Typical
? THD+N: 0.002% Typical
? Full-Scale Output: 3.9 VPP Typical

? 4x/8x Oversampling Interpolation Filter:
? Stop-Band Attenuation: -50 dB
? Passband Ripple: ±0.04 dB

? Sampling Frequency: 5 kHz to 200 kHz
? System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, or 1152 fS with Autodetect
? Zero Flags for Selectable Channel Combinations
? Serial Port (SPI/I2C) for Mode Control
? User-Programmable Functions:
? Flexible Audio Data Formats
? Right-Justified, I2S, and Left-Justified
? 16-, 18-, 20-, and 24-Bit Audio Data

? Digital Attenuation: Mode Selectable
? 0 dB to -63 dB, 0.5-dB/step
? 0 dB to -100 dB, 1-dB/step

? Soft Mute
? Digital De-Emphasis
? Digital Filter Roll-Off: Sharp or Slow

? Single Power-Supply Operation: 5-V Analog, 5-V Digital
? Package: SSOP-28 (150 mil)
? Pin-Compatible with PCM1780
? APPLICATIONS
? Integrated A/V Receivers
? DVD Movie and Audio Players
? HDTV Receivers
? Car Audio Systems
? DVD Add-On Cards for High-End PCs
? Digital Audio Workstations
? Other Multichannel Audio Systems

System Two, Audio Precision are trademarks of Audio Precision, Inc. SPI is a trademark of Motorola. I2C, I2S are trademarks of NXP Semiconductors.