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.
● 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.
●All trademarks are the property of their respective owners.
