ICL7106, ICL7107: 31/2 Digit, LCD/LED Display, A/D Converters

ICL7106, ICL7107: 31/2 Digit, LCD/LED Display, A/D Converters

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)

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