PCM1748数据手册集成电路（IC）的ADC/DAC-特殊用途规格书PDF

描述 Description

The PCM1748 is a CMOS, monolithic, integrated circuit which includes stereo digital-to-analog converters (DAC) and support circuitry in a small SSOP-16 package. The data converters use Texas Instruments' enhanced multilevel delta-sigma architecture that employs fourth-order noise shaping and 8-level amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1748 accepts industry-standard audio data formats with 16- to 24-bit data, providing easy interfacing to audio DSP and decoder chips. Sampling rates up to 100 kHz are supported. A full set of user-programmable functions is accessible through a 3-wire serial-control port that supports register write functions.

特性 Features

• 24-Bit Resolution
• Analog Performance (VCC = 5 V):
- Dynamic Range:
• 106 dB, Typical (PCM1748KE)
• 100 dB, Typical (PCM1748E)
• SNR:
• 106 dB, Typical (PCM1748KE)
• 100 dB, Typical (PCM1748E)
• THD+N:
• 0.002%, Typical (PCM1748KE)
• 0.003%, Typical (PCM1748E)
• Full-Scale Output:3.1 Vp-p, Typical
• 8× Oversampling Digital Filter:
- Stop-Band Attenuation: -55 dB
• Pass-Band Ripple: ±0.03 dB
• Sampling Frequency: 5 kHz to 100 kHz
• System Clock: 256 fS, 384 fS, 512 fS, 768 fS With Autodetect
• Accepts 16-, 18-, 20-, and 24-Bit Audio Data
• Data Formats: Standard, I2S, and Left-Justified
• User-Programmable Mode Controls:
- Digital Attenuation: 0 dB to -63 dB, 0.5 dB/Step
• Digital De-Emphasis
• Digital Filter Rolloff: Sharp or Slow
• Soft Mute
• Zero Flags for Each Output
• Dual-Supply Operation:
- 5-V Analog
• 3.3-V Digital
• 5-V Tolerant Digital Inputs
• Small SSOP-16 Package
• APPLICATIONS
- AV Receivers
• DVD Movie Players
• DVD Add-On Cards for High-End PCs
• HDTV Receivers
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio
FilterPro is a trademark of Texas Instruments. System Two, Audio Precision are trademarks of Audio Precision, Inc.