The Intersil ICL7106 and ICL7107 are high performance, low

power, 31/2 digit A/D converters. Included are seven segment

decoders, display drivers, a reference, and a clock. The

ICL7106 is designed to interface with a liquid crystal display

(LCD) and includes a multiplexed backplane drive; the ICL7107

will directly drive an instrument size light emitting diode (LED)

display.

The ICL7106 and ICL7107 bring together a combination of

high accuracy, versatility, and true economy. It features

auto zero to less than 10µV, zero drift of less than 1µV/°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 (ICL7106), enables a high performance panel

meter to be built with the addition of only 10 passive

components and a display.

Features

• 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 ICL7106, LED lCL7107

• Low noise - less than 15µVP-P

• On-chip clock and reference

• Low power dissipation - typically less than 10mW

• No additional active circuits required

• Enhanced display stability

• Pb-free (RoHS compliant)