CS4373A Product Bulletin

CS4373A
∆∑
28-pin SSOP
9.9 mm
7.4 mm
IC dimensions
CS4373A Features
• Digital Delta-Sigma input, differential
analog output
• Selectable differential outputs
(OUT±, BUF±)
• Selectable output attenuation
• 1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64
• User programmable test modes
• AC differential/common mode output
• DC pulse/calibration output
• AC output voltage: 5 Vp-p differential
• DC output voltage: 2.5 Vdc differential
• Outstanding noise performance
• 114 dB SNR @ 430 Hz bandwidth
• Low total harmonic distortion
• OUT±: -115 dB THD typical,
-112 dB THD max
• BUF±: -105 dB THD typical,
-95 dB THD max
• Low-power consumption
• Normal mode: 8 mA
• Sleep mode: 500 µA
• Power down: 120 µA
• Dual power supply configuration
• VA+ = +2.5 V; VA- = -2.5 V;
VD = +3.3 V
CS4373A
Low-Power, High-Performance Delta-Sigma Test
DAC for Testing Seismic Acquisition Systems
and Geophysical Instruments
CS4373A
The CS4373A is a highly integrated
Noise performance is 114 dB SNR over
differential output digital-to-analog
a 430 Hz bandwidth. Driven with a
converter intended to test high-resolution,
digital Delta-Sigma bit stream from the
low-frequency measurement systems. Its
digital filter, the maximum AC analog
small footprint, low-power consumption,
output voltage is a differential 5 V
selectable attenuation, multiple outputs
peak-to-peak signal.
and programmable test modes make
this device ideal for testing seismic
Designed for use with Cirrus Logic’s
acquisition systems and geophysical
CS5376A or CS5378 digital
instruments.
filters, CS3301 or CS3302 highprecision amplifiers, and CS5371
The CS4373A muxed outputs provide
or CS5372 high-performance
a precision output (OUT±) for testing
Delta-Sigma modulators, the
the electronics channel and a buffered
CS4373A offers a complete solution
output (BUF±) for in-circuit sensor
for testing single or multichannel
testing. DAC distortion performance
seismic system performance.
(THD) of the precision output is typically
-115 dB from the precision output and
-105 dB from the buffered output.
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Product Bulletin 0150-1005-PB-W © 2005 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic is a trademark of Cirrus Logic, Inc.
Other brand and product names may be trademarks or service marks of their respective owners.