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.
FEATURES
Low Power Consumption:
175mW max, V
S
=
15V
150mW max, Vs =
12V
Guaranteed Nonlinearity:
0.006% FSR max (ADC1143J)
0.003% FSR max (ADC1143K)
Guaranteed Differential Nonlinearity:
0.006% FSR max (ADC1143J)
0.003% FSR max (ADC1143K)
Low Differential Nonlinearity T.C.:
2ppm/
C max (ADC1143J)
1ppm/
C max (ADC1 143K)
Fast Conversion Time:
70
s max (ADC1143J)
100
s max (ADC1143K)
Wide Power Supply Operation:
Vs =
11.4V to
18.0V
V
D
= +3.0V to +18.0V
APPLICATIONS
Seismic Data Acquisition
Oil Well Instrumentation
Portable Industrial Scales
Portable Test Equipment
Robotics
GENERAL DESCRIPTION
The ADC1143 is a low power 16-bit successive-approximation analog-
to-digital converter with a maximum power consumption of 175mW at
Vs = 15V, 150mW at Vs = 12V, and is contained in a 2" x 2" x 0.4"
module.
High performance like integral nonlinearity of 0.006% FSR
(ADC1143J)/
0.003% FSR (ADC1143K) and differential non-
linearity of
0.006% FSR (ADC1143)/
0.003% FSR (ADC1143K) are
guaranteed. Additional guaranteed performance includes: differential
nonlinearity T.C. of
2ppm/
C (ADC1143J)/
1
ppm/
C (ADC1143K),
offset T.C.
40
V/
C and gain T.C.
12ppm/
C.
The ADC1143 makes extensive use of CMOS integrated circuits and
thin-film components to obtain low power consumption, excellent
performance and small size. The internal 16-bit CMOS DAC
incorporates proprietary thin-film resistor technology and proprietary
current steering switches. CMOS successive-approximation registers,
low power comparator and low noise reference are also used to
optimize the performance of the ADC1143 (shown in Figure 1).
The ADC1143 can operate with power supply voltages ranging from
11.4V dc to
8.0V dc for Vs and +3V dc to +18V dc for the V
D
supply. An internal voltage reference is provided, but an external
reference can be used. Five analog input voltage ranges are selectable
via user pin programming: +5V, +10V, +20V, 5V and
10
V.
Digital output coding in unipolar operation is true binary; for bipolar
operation, the coding is offset binary or two's complement. Digital
outputs are provided in both parallel and serial formats.
1400 Providence Highway, Building #2
Norwood, MA 02062
Phone (781) 551-5500
FAX (781) 551-5555
www.intronicspower.com
Low Power/High Performance
16-Bit A/D Converter
ADC1143
Figure 1. ADC1143 Functional Block Diagram
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