®
ICL7136
Data Sheet
July 21, 2005
FN3086.6
31/2 Digit LCD, Low Power Display, A/D
Converter with Overrange Recovery
The Intersil ICL7136 is a high performance, low power 3
1
/
2
digit, A/D converter. Included are seven segment decoders,
display drivers, a reference, and a clock. The ICL7136 is
designed to interface with a liquid crystal display (LCD) and
includes a multiplexed backplane drive.
Features
• First Reading Overrange Recovery in One Conversion
Period
• Guaranteed Zero Reading for 0V Input on All Scales
• True Polarity at Zero for Precise Null Detection
• 1pA Typical Input Current
• True Differential Input and Reference, Direct Display Drive
- LCD ICL7136
• Low Noise - Less Than 15µV
P-P
• On Chip Clock and Reference
• No Additional Active Circuits Required
• Low Power - Less Than 1mW
• Surface Mount Package Available
• Drop-In Replacement for ICL7126, No Changes Needed
• Pb-Free Plus Anneal Available (RoHS Compliant)
The ICL7136 brings together a combination of high
accuracy, versatility, and true economy. It features auto-zero
to less than 10µV, zero drift of less than 1µV/
o
C, input bias
current of 10pA (Max), and rollover error of less than one
count. True differential inputs and reference are useful in all
systems, but give the designer an uncommon advantage
when measuring load cells, strain gauges and other bridge
type transducers. Finally, the true economy of single power
supply operation, enables a high performance panel meter
to be built with the addition of only 10 passive components
and a display.
The ICL7136 is an improved version of the ICL7126,
eliminating the overrange hangover and hysteresis effects,
and should be used in its place in all applications. It can also
be used as a plug-in replacement for the ICL7106 in a wide
variety of applications, changing only the passive
components.
Ordering Information
TEMP.
PART NUMBER RANGE (°C)
ICL7136CPL
ICL7136CPLZ
(Note 1)
ICL7136CM44
ICL7136CM44Z
(Note 1)
0 to 70
0 to 70
0 to 70
0 to 70
PACKAGE
40 Ld PDIP
40 Ld PDIP
(Pb-free) (Note 2)
44 Ld MQFP
44 Ld MQFP
(Pb-free)
PKG.
DWG. #
E40.6
E40.6
Q44.10x10
Q44.10x10
Q44.10x10
ICL7136CM44ZT 44 Ld MQFP Tape and Reel
(Note 1)
(Pb-free)
NOTES:
1. Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and
100% matte tin plate termination finish, which are RoHS
compliant and compatible with both SnPb and Pb-free soldering
operations. Intersil Pb-free products are MSL classified at
Pb-free peak reflow temperatures that meet or exceed the
Pb-free requirements of IPC/JEDEC J STD-020.
2. Pb-free PDIPs can be used for through hole wave solder
processing only. They are not intended for use in Reflow solder
processing applications.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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