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MAX132MRG View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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MAX132MRG
MaximIC
Maxim Integrated MaximIC
MAX132MRG Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
19-0009; Rev 2; 8/95
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±18-Bit ADC with Serial Interface
_______________General Description
The MAX132 is a CMOS, 18-bit plus sign, serial-output,
analog-to-digital converter (ADC). Multi-slope integra-
tion provides high-resolution conversions in less time
than standard integrating ADCs, allowing operation up
to 100 conversions per second. Low conversion noise
provides guaranteed operation with ±512mV full-scale
input range (2µV/LSB). A simple 4-wire serial interface
connects easily to all common microprocessors, and
twos-complement output coding simplifies bipolar mea-
surements. Typical supply current is only 60µA and is
reduced to 1µA in sleep mode. Four serially pro-
grammed digital outputs can be used to control an
external multiplexer or programmable-gain amplifier.
The MAX132 comes in 24-pin narrow DIP and wide SO
packages, and is available in commercial and extend-
ed temperature grades.
High resolution, compact size, and low power make this
device ideal for data loggers, weigh scales, data-acqui-
sition systems, and panel meters.
________________________Applications
Remote Data Acquisition
Battery-Powered Instruments
Industrial Process Control
Transducer-Signal Measurement
Pressure, Flow, Temperature, Voltage
Current, Resistance, Weight
________________Functional Diagram
____________________________Features
o Low Supply Current:
60µA (Normal Operation)
1µA (Sleep-Mode Operation)
o ±0.006% FSR Accuracy at 16 Conv/sec
o Low Noise: 15µVRMS
o Serial I/O Interface with Programmed Output for
Mux and PGA
o Performs up to 100 Conv/sec
o ±2pA Input Current
o 50Hz/60Hz Rejection
______________Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX132CNG
0°C to +70°C 24 Narrow Plastic DIP
MAX132CWG
0°C to +70°C 24 Wide SO
MAX132C/D
0°C to +70°C Dice*
MAX132ENG -40°C to +85°C 24 Narrow Plastic DIP
MAX132EWG -40°C to +85°C 24 Wide SO
MAX132MRG -55°C to +125°C 24 Narrow CERDIP**
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________________Pin Configuration
CREF-
CREF+
V+
CS
SCLK
EOC
DIN
DOUT
BUF OUT
INT OUT
INT IN
REF+
REF-
AGND
MAX132
P0
IN LO
P1
IN HI
P2
V-
P3
OSC1
DGND
OSC2
+5V
602k
4.7nF
±512mV INPUT
-5V
TOP VIEW
CS 1
DIN 2
DOUT 3
SCLK 4
OSC2 5
OSC1 6
P0 7
P1 8
P2 9
P3 10
EOC 11
DGND 12
MAX132
DIP/SO
24 V+
23 BUF OUT
22 INT OUT
21 INT IN
20 CREF-
19 CREF+
18 REF+
17 REF-
16 AGND
15 IN LO
14 IN HI
13 V-
________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
 

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