PCM1738_15 Datasheet, PDF (1/47 Pages) Texas Instruments – Audio-Stereo Digital-to-Analog Converter

BurrĆBrown Products
from Texas Instruments
PCM1738
PCM1738
SBAS174C – FEBRUARY 2002 – REVISED FEBRUARY 2007
24-Bit, 192-kHz Sampling, Advanced Segment, Audio-Stereo Digital-to-Analog Converter
FEATURES
• 24-Bit Resolution
• Analog Performance (V_CC = 5 V):
– Dynamic Range: 117 dB (typical)
– SNR: 117 dB (typical)
– THD+N: 0.0004% (typical)
– Full-Scale Output: 2.2 Vrms (at
Postamplifier)
• Differential Current Output: ±2.48 mA
• Sampling Frequency: 10 kHz to 200 kHz
• System Clock: 128, 192, 256, 384, 512, or 768
f_S With Autodetect
• Accepts 16-, 20-, and 24-Bit Audio Data
• Data Formats: Standard, I²S, and Left-Justified
• 8× Oversampling Digital Filter:
– Stop-Band Attenuation: –82 dB
– Pass-Band Ripple: ±0.002 dB
• Optional Interface to External Digital Filter
Available
• Optional Interface to DSD Decoder for SACD
Playback
• User-Programmable Mode Controls:
– Digital Attenuation: 0 dB to –120 dB, 0.5
dB/Step
– Digital De-Emphasis
– Digital Filter Rolloff: Sharp or Slow
– Soft Mute
– Zero-Detect Mute
– Zero Flags for Each Output
• Dual-Supply Operation:
– 5-V Analog, 3.3-V Digital
• 5-V Tolerant Digital Inputs
• Small SSOP-28 Package
APPLICATIONS
• AV Receivers
• DVD Movie Players
• SACD Players
• HDTV Receivers
• Car Audio Systems
• Digital Multitrack Recorders
• Other Multichannel Audio Systems
DESCRIPTION
The PCM1738 is a CMOS, monolithic, integrated
circuit (IC) that includes stereo digital-to-analog
converters (DACs) and support circuitry in a small
SSOP-28 package. The data converters use a newly
developed advanced segment DAC architecture to
achieve excellent dynamic performance and
improved tolerance to clock jitter. The PCM1738
provides balanced current outputs, allowing the user
to optimize analog performance 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 200
kHz 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 is accessible through a
4-wire serial control port that supports register write
and read functions.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Audio Precision, System Two are trademarks of Audio Precision, Inc.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2002–2007, Texas Instruments Incorporated