PCM1738
PC
M
173
8
www.ti.com
24-Bit, 192kHz Sampling,
Advanced Segment, Audio-Stereo
DIGITAL-TO-ANALOG CONVERTER
FEATURES
24-BIT RESOLUTION
ANALOG PERFORMANCE (V
CC
= +5V):
Dynamic Range: 117dB typ
SNR: 117dB typ
THD+N: 0.0004% typ
Full-Scale Output: 2.2Vrms (at post amp)
DIFFERENTIAL CURRENT OUTPUT: 2.48mA
SAMPLING FREQUENCY: 10kHz to 200kHz
SYSTEM CLOCK: 128, 192, 256, 384, 512,
or 768f
S
with Auto Detect
ACCEPTS 16-, 20-, AND 24-BIT AUDIO DATA
DATA FORMATS: Standard, I
2
S, and Left-
Justified
8x OVERSAMPLING DIGITAL FILTER:
Stopband Attenuation: –82dB
Passband Ripple: 0.002dB
OPTIONAL INTERFACE TO EXTERNAL
DIGITAL FILTER AVAILABLE
OPTIONAL INTERFACE TO DSD DE-
CODER FOR SACD PLAYBACK
USER-PROGRAMMABLE MODE CONTROLS:
Digital Attenuation: 0dB to –120dB, 0.5dB/Step
Digital De-Emphasis
Digital Filter Roll-Off: Sharp or Slow
Soft Mute
Zero Detect Mute
Zero Flags for Each Output
DUAL-SUPPLY OPERATION:
+5V Analog, +3.3V Digital
5V TOLERANT DIGITAL INPUTS
SMALL SSOP-28 PACKAGE
APPLICATIONS
AV RECEIVERS
DVD MOVIE PLAYERS
SACD PLAYERS
HDTV RECEIVERS
CAR AUDIO SYSTEMS
DIGITAL MULTI-TRACK RECORDERS
OTHER MULTICHANNEL AUDIO SYSTEMS
DESCRIPTION
The PCM1738 is a CMOS, monolithic, Integrated Cir-
cuit (IC) that includes stereo Digital-to-Analog Convert-
ers (DACs) and support circuitry in a small SSOP-28
package. The data converters utilize a newly developed
advanced segment DAC architecture to achieve excel-
lent dynamic performance and improved tolerance to
clock jitter. The PCM1738 provides balanced current
outputs, allowing the user to optimize analog perfor-
mance externally, and 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 200kHz are supported. The PCM1738 also
has two optional modes of operation: an external digital-
filter mode (for use with the DF1704, DF1706, and
PMD200), and a DSD decoder interface for SACD
playback applications. A full set of user-programmable
functions are accessible through a 4-wire serial control
port that supports register write and read functions.
Copyright © 2000, Texas Instruments Incorporated
SBAS174B
Printed in U.S.A. February, 2002
BURR-BROWN [ BURR-BROWN CORPORATION ]
