1400 Providence Highway, Building #2
Norwood, MA 02062
Phone (781) 551-5500
FAX (781) 551-5555
www.intronicspower.com
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.
Figure 1. ADC1140 Functional Block Diagram
GENERAL DESCRIPTION
The ADC1140 is a low cost 16-bit successive-approximation analog-
to-digital converter having a 35
S maximum conversion time. This
converter provides high accuracy, high stability and low power
consumption all in a 2" X 2" X 0.4' module.
High accuracy performance such as integral and differential
nonlinearity of 0.003% FSR max are both guaranteed. Guaranteed
stability such as differential nonlinearity TC of 2ppm/
C maximum,
offset TC of 30
V/
C maximum, gain TC of 12ppm/
C maximum
and power supply sensitivity of 0.002% of FSR/% Vs are also
provided by the ADC1140.
The ADC1140 makes extensive use of both integrated circuit and thin-
film components to obtain excellent performance, small size and low
cost. The internal 16-bit DAC incorporates proprietary thin-film
resistor technology and proprietary CMOS current-steering switches.
A low noise reference, low power comparator, and low power
successive approximation register are also used to optimize the
ADC1140's design (shown in Figure 1).
The ADC1140 can operate with power supplies ranging from l2V to
l 7V and has provisions for a user supplied external reference. Four
analog input voltage ranges are selectable via pin programming; 5V,
10V, 0 to +5V and 0 to +10V. Bipolar coding is provided in the
offset binary and two's complement formats with unipolar coding
displayed in true binary.
FEATURES
Guaranteed Nonlinearity: 0.003% FSR max
35
s Maximum Conversion Time
Small Size 2" X 2" X 0.4"
Wide Power Supply Operation: 12V to 17V
APPLICATIONS
Process Control Data Acquisition
Seismic Data Acquisition
Nuclear Instrumentation
Medical Instrumentation
Pulse Code Modulation Telemetry
Industrial Scales
Robotics
Low Cost 16-Bit
Analog to Digital Converter
Model ADC1140
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