Burr Brown Products
from Texas Instruments
PCM1794A
SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
24 BIT, 192 kHz SAMPLING, ADVANCED SEGMENT,
AUDIO STEREO DIGITAL TO ANALOG CONVERTER
FEATURES
D
24-Bit Resolution
D
Analog Performance:
− Dynamic Range: 132 dB (9 V RMS, Mono)
129 dB (4.5 V RMS, Stereo)
127 dB (2 V RMS, Stereo)
− THD+N: 0.0004%
D
Dual-Supply Operation:
− 5-V Analog, 3.3-V Digital
D
5-V Tolerant Digital Inputs
D
Small 28-Lead SSOP Package
APPLICATIONS
D
A/V Receivers
D
DVD Players
D
Musical Instruments
D
HDTV Receivers
D
Car Audio Systems
D
Digital Multitrack Recorders
D
Other Applications Requiring 24-Bit Audio
DESCRIPTION
The PCM1794A is a monolithic CMOS integrated circuit
that includes stereo digital-to-analog converters and
support circuitry in a small 28-lead SSOP package. The
data converters use TI’s advanced segment DAC
architecture to achieve excellent dynamic performance
and improved tolerance to clock jitter. The PCM1794A
provides balanced current outputs, allowing the user to
optimize analog performance externally. Sampling rates
up to 200 kHz are supported.
D
Differential Current Output: 7.8 mA p-p
D
8× Oversampling Digital Filter:
− Stop-Band Attenuation: –130 dB
− Pass-Band Ripple:
±0.00001
dB
D
Sampling Frequency: 10 kHz to 200 kHz
D
System Clock: 128, 192, 256, 384, 512, or
D
Accepts 16- and 24-Bit Audio Data
D
PCM Data Formats: Standard, I
2
S, and
Left-Justified
768 f
S
With Autodetect
D
Optional Interface Available to External
Digital Filter or DSP
D
D
D
D
Digital De-Emphasis
Digital Filter Rolloff: Sharp or Slow
Soft Mute
Zero Flag
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate
precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to
damage because very small parametric changes could cause the device not to meet its published specifications.
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.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
2006, Texas Instruments Incorporated
BURR-BROWN [ BURR-BROWN CORPORATION ]
