TC7106CPL Teledyne 40P DIP IC ICL7106 A/D Converter LCD Driver ⏱

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A/D Converter with LCD Driver
TC7106CPL "Original" Teledyne 40P DIP IC

One of the most important tools in electronics is an accurate and reliable meter. Nowadays, we use digital meters because they are precise, easy to use, and relatively inexpensive. So today, we will learn about the ICL7106 3½ digit A/D converter with LCD Driver and use it to build a digital meter.
The ICL7106 is designed as an integrated circuit for digital meter applications. We will be using it to build a digital voltmeter and ammeter with two starting measurement ranges: 0 to 200mV, which is enough to replace the analog millivolt and milliamp meter that we have been using.

A few examples of usages for the ICL7106 include replacing the analog meter in circuits such as a frequency meter, temperature reader, moisture meter, light meter, and many more.

Even though precision may be lower than that of a store-bought multimeter, this circuit will still be much more precise than an analog meter. It would also have an LCD reading and a very high input impedance within its measurement ranges.

The ICL7106 3½ A/D Converter with LCD Driver

The ICL7106 is a low-power 3½-digit analog-to-digital converter together with an integrated display driver, a clock, and a reference. It can be connected directly and drive an LCD measurement reading display. The ICL7106 is often the choice for a single-chip digital meter solution.
Features

Maximum zero drift of 1μV per °C
Zero reading for 0V input within 10pV
Noise level lower than 15μVp-p
Usual input current of 1pA
Power dissipation of less than 10mW
Differential input and reference
Can directly drive an LCD
Integrated clock and reference
Typical meter applications require only basic components