Rainbow Electronics ADC10158 User Manual
General description, Applications, Features
TL H 11225
ADC10154
ADC10158
10-Bit
Plus
Sign
4
m
s
ADCs
with
4-
or
8-Channel
MUX
TrackHold
and
Reference
January 1995
ADC10154 ADC10158 10-Bit Plus Sign 4 ms ADCs
with 4- or 8-Channel MUX Track Hold and Reference
General Description
The ADC10154 and ADC10158 are CMOS 10-bit plus sign
successive approximation A D converters with versatile an-
alog input multiplexers track hold function and a 2 5V
band-gap reference The 4-channel or 8-channel multiplex-
ers can be software configured for single-ended differential
or pseudo-differential modes of operation
The input track hold is implemented using a capacitive ar-
ray and sampled-data comparator
Resolution can be programmed to be 8-bit 8-bit plus sign
10-bit or 10-bit plus sign Lower-resolution conversions can
be performed faster
The variable resolution output data word is read in two
bytes and can be formatted left justified or right justified
high byte first
Applications
Y
Process control
Y
Instrumentation
Y
Test equipment
Features
Y
4- or 8- channel configurable multiplexer
Y
Analog input track hold function
Y
0V to 5V analog input range with single a5V power
supply
Y
b
5V to a5V analog input voltage range with
g
5V sup-
plies
Y
Fully tested in unipolar (single a5V supply) and bipolar
(dual
g
5V supplies) operation
Y
Programmable resolution speed and output data format
Y
Ratiometric or Absolute voltage reference operation
Y
No zero or full scale adjustment required
Y
No missing codes over temperature
Y
Easy microprocessor interface
Key Specifications
Y
Resolution
10-bit plus sign
Y
Integral linearity error
g
1 LSB (max)
Y
Unipolar power dissipation
33 mW (max)
Y
Conversion time (10-bit a sign)
4 4 ms (max)
Y
Conversion time (8-bit)
3 2 ms (max)
Y
Sampling rate (10-bit a sign)
166 kHz
Y
Sampling rate (8-bit)
207 kHz
Y
Band-gap reference
2 5V
g
2 0% (max)
ADC10158 Simplified Block Diagram
TL H 11225 – 1
TRI-STATE
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C1995 National Semiconductor Corporation
RRD-B30M75 Printed in U S A