Texas Instruments PCM1742KE

Description
The PCM1742 is a CMOS, monolithic, integrated circuit that 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.

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