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: con·
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

DESCRIPTION
The PCM1748 is a CMOS, monolithic, integrated
circuit which includes stereo digital-to-analog con·
verters (DAC) 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 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.