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HI7131 Datasheet(PDF) 1 Page - Intersil Corporation

Part No. HI7131
Description  3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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HI7131 Datasheet(HTML) 1 Page - Intersil Corporation

 
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1
®
November 2000
HI7131, HI7133
31/2 Digit, Low Power, High CMRR,
LCD/LED Display-Type A/D Converters
Features
• 120dB CMRR Equal to
±0.01 Count/V of Common
Mode Voltage Error
• Fast Recovery from Input Overrange Results “Correct
First-Reading” After Overload
• Guaranteed 0000 Reading for 0V Input
• True Polarity at Zero for Precise Null Detection
• 1pA Input Current (Typ)
• True Differential Input and Reference
• Single or Dual Supply Operation Capability
• Direct LCD Display Drive - HI7131
• Direct LED Display Drive - HI7133
• Low Noise, 15
µVP-P Without Hysteresis or Overrange
Hangover
• Low Power Dissipation, Guaranteed Less Than 1mW,
Results 8000 Hours (Typ) 9V Battery Life
• No Additional Active Components Required
Applications
• Handheld Instruments
• Basic Measurements: Voltage, Current, Resistance
Pressure, Temperature, Fluid Flow and Level, pH,
Weight, Light Intensity
• DMMs and DPMs
Description
The Intersil HI7131 and HI7133 are 31/2 digit, A/D convert-
ers that have been optimized for superior DC Common
Mode Rejection (CMRR) when used with a split
±5V supply
or a single 9V battery. The HI7131 contains all the neces-
sary active components on a single IC to directly interface an
LCD (Liquid Crystal Display). The supply current is under
100
µA and is ideally suited for battery operation. The HI7133
contains all the necessary active components on a single IC
to directly interface an LED (Light Emitting Diode).
The HI7131 and HI7133 feature high accuracy performance
like, 120dB of CMRR, auto-zero to less than 10
µV of offset,
fast recovery from over load, zero drift of less than 1
µV/oC,
input bias current of 10pA maximum, and rollover error of
less than one count. A true differential signal and reference
inputs are useful features in all systems, but gives the
designer an advantage when measuring load cells, strain
gauges and other bridge-type transducers.
The HI7131 and HI7133 are supplied in a 40 lead plastic DIP
and a 44 lead metric plastic quad flatpack package.
Ordering Information
PART NO.
TEMP.
RANGE (oC)
PACKAGE
PKG. NO.
HI7131CPL
0 to 70
40 Ld PDIP
E40.6
HI7131CM44
0 to 70
44 Ld MQFP
Q44.10x10
HI7133CPL
0 to 70
40 Ld PDIP
E40.6
HI7133CM44
0 to 70
44 Ld MQFP
Q44.10x10
File Number
3373.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
OBSOLET
E PRODUC
T
POSSIBLE
SUBSTITU
TE PRODU
CT
HI7131 see
ICL71x6,
HI7133 se
e ICL71x7
contact ou
r Technica
l Support
Center at
1-888-INTE
RSIL or w
ww.intersi
l.com/tsc


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