ICL7126 В® Data Sheet October 25, 2004 3 1/2 Digit, Low Power, Single Chip A/D
Converter
The ICL7126 is a high performance, very low power
31/2-digit, A/D converter. All the necessary active devices
are contained on a single CMOS IC, including seven
segment decoders, display drivers, reference, and clock. The
ICL7126 is designed to interface with a liquid crystal display
(LCD) and includes a backplane drive. The supply current of
100ВµA is ideally suited for 9V battery operation.
The ICL7126 brings together an unprecedented combination
of high accuracy, versatility, and true economy. It features
auto-zero to less than 10ВµV, zero drift of less than 1ВµV/oC,
input bias current of 10pA maximum, and rollover error of
less than one count. The versatility of true differential input
and reference is useful in all systems, but gives the designer
an uncommon advantage when measuring load cells, strain
gauges and other bridge-type transducers. And finally the
true economy of single power operation allows a high
performance panel meter or multi-meter to be built with the
addition of only 10 passive components and a display. Features 8,000 Hours Typical 9V Battery Life 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 LCD Display Drive -No External Components
Required Pin Compatible With the ICL7106 Low Noise -Less Than 15ВµVP-P On-Chip Clock and Reference Low Power Dissipation Guaranteed Less Than 1mW No Additional Active Circuits Required Pb-Free Available (RoHS Compliant) Pinout
ICL7126 (PDIP)
TOP VIEW The ICL7126 can be used as a plug-in replacement for the …