Figure 1. DAS1157/DAS1158/DAS1159 Block Diagram
As shown in Figure 1, each device contains a precision sample/hold
amplifier, high accuracy 14-/15-/16-bit analog-to-digital converter,
precision reference, CMOS tri-state output buffers (for direct 8-bit or
16-bit bus interface), user accessible gain and offset adjust
potentiometers, and power supply bypass capacitors, all in a compact
low profile 2" x 4" x 0.375" metal case package. No additional
components are required for operation.
Information furnished by Intronics is believed to be accurate and reliable. However, no
responsibility is assumed by Intronics for its use; nor for any infringements of patents or
other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Intronics.
1400 Providence Highway, Building #2
Norwood, MA 02062
Phone (781) 551-5500
FAX (781) 551-5555
www.intronicspower.com
FEATURES
Complete with High Accuracy Sample/Hold and
A/D Converter
Low Power Consumption: 650mW max, Vs =
15V
Rated Performance: -25
C to +85
C
Low Nonlinearity (DAS1158 and DAS1159)
Differential:
0.0015% FSR max
Integral:
0.003% FSR max
Differential T.C.:
1ppm/
C max
High Throughput Rate: 18kHz min
Byte-Selectable Tri-State Buffered Outputs
Internal Gain & Offset Potentiometers
All Hermetically-Sealed Semiconductors
Improved Second Source to A/D/A/M-834 and
A/D/A/M-835 Modules
APPLICATIONS
Seismic Data Acquisition
Portable Field Instrumentation
Automated Test Equipment
Process Control Data Acquisition
Medical Instrumentation
GENERAL DESCRIPTION
The DAS1157/DAS1158/DAS1159 are 14-/15-/16-bit sampling
analog-to-digital converters. They are ideally suited for use in portable
and remote data acquisition equipment where low power consumption
(650mW maximum) and wide temperature range (-25
C to +85
C
rated performance) are required.
DAS1157/DAS1158/DAS1159 provide guaranteed high accuracy and
high stability system performance essential to medical, analytical and
process control equipment: differential nonlinearity of
0.0015% max
and integral nonlinearity of
0.003% max (DAS1158 and DAS1159);
no missing codes guaranteed; gain T.C. of
8ppm/
C max, zero T.C.
of 80
V/
C max and differential nonlinearity T.C. of 1ppm/
C max.
The wide dynamic range will enhance the performance of critical
measurements in gas and liquid chromatography, blood analyzers,
distributed data acquisition in factory automation and power
generating equipment, and in automatic test equipment.
The DAS11157/DAS1158/DAS1159 make use of proprietary CMOS
technology to achieve low power operation, while utilizing the latest
integrated circuit and thin-film components to achieve the highest
level of performance and reliability. All hermetically sealed
semiconductor components are used to insure added reliability over a
wide range of operating conditions.
14-Bit, 15-Bit & 16Bit Sampling
Analog-to-Digital Converters
DAS1157/DAS1158/DAS1159
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