PCM1742数据手册集成电路（IC）的ADC/DAC-特殊用途规格书PDF

描述 Description

The PCM1742 is a CMOS, monolithic, integrated circuit which includes stereo digital-to-analog converters (DACs) 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 PCM1742 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 200 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 (PCM1742KE)
• 100 dB, Typical (PCM1742E)
• SNR:
- 106 dB, Typical (PCM1742KE)
• 100 dB, Typical (PCM1742E)
• THD+N:
- 0.002%, Typical (PCM1742KE)
• 0.003%, Typical (PCM1742E)
• Full-Scale Output:3.1 Vp-p, Typical
• 4x/8x Oversampling Digital Filter: Stop-Band Attenuation: -55 dB Pass-Band Ripple: ±0.03 dB
• Sampling Frequency: 5 kHz to 200 kHz
• System Clock: 128 fS, 192 fS, 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
• DVD Audio Players
• HDTV Receivers
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio
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