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) con·
0.003%, Typical (PCM1742E)
– Full-Scale Output: 3.1 V p-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

DESCRIPTION
The PCM1742 is a CMOS, monolithic, integrated
circuit which includes stereo digital-to-analog con·
verters (DACs) and support circuitry in a small
SSOP-16 package. The data converters use Texas
Instruments' enhanced multilevel delta-sigma archi-
tecture 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.