ICL7106 and ICL7107 are Intersil's 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/oC, 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.
The ICL7106 and ICL7107 are high‑performance, low‑power 3½‑digit A/D converters with integrated LCD (ICL7106) or LED (ICL7107) display drivers. They feature auto‑zero, low noise, true differential inputs and a reference, making them suitable for bridge‑type transducers such as load cells and strain gauges.
The datasheet includes detailed pinouts, absolute maximum ratings, electrical specifications, design‑information summary sheets, and example test circuits. It also provides package dimensions for PDIP and MQFP variants and notes on RoHS‑compliant Pb‑free options.
| Auto‑zero accuracy | < 10 µV |
|---|---|
| Zero drift | < 1 nV/°C |
| Input bias current | 10 pA (max) |
| Power dissipation | < 10 mW (typical) |
| Maximum lead temperature (soldering 10 s) | 300 °C |
| ICL7106 supply voltage | single 9 V |
| ICL7107 supply voltage | dual +5 V / –5 V |
The auto‑zero accuracy is less than 10 µV.
Typical power dissipation is less than 10 mW.
The maximum lead temperature for a 10‑second soldering process is 300 °C.
The ICL7106 operates from a single 9 V supply.