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Real Saviour : TA7660 Voltage Converter/Inverter

Negative Voltage supply is very much necessary in Analog circuits and it is extremely necessary if  you are playing with dual polarity signals also called as bipolar signals.

Although there are number of solutions available to generate negative supply. But Best and easy of them is the converting current positive supply in to the negative.

This saves your design time and component cost. And I must say, I am impressed by such small-little IC named ICL7660. I used the one from Intersil, CMOS Voltage Converter, apparently all the other Semiconductor Manuf. Produce them.

Pinout- ICL7660

Background story goes like this

We were involved in building data acquisition system to conduct the field survey  , required for the tidal energy generation program. We were supposed to measure all the critical environmental parameters in the area where tidal power plant is to be built.

Parameters like Temperature, Humidity and Pressure in surrounding atmosphere, Water level, Water temperature.

We were using number of Analog and Digital Sensors to carry out the task. That’s when we needed Negative supply, specifically speaking for RTD signal conditioning circuit. 

Our complete system was powered from +12V Battery, We had no option but to find the better Voltage converter.

ICL7660 is the best choice for voltage conversion. It can easily convert positive voltage from +1.5V to +10V. It is really efficient too. And requires just 2-3 external components.
ICL7660 Circuit

We immediately order them, and on the next day we performed breadboard test, which was 100% successful.
There are various other applications you can realize, by using tiny little ICL7660. Do not forget to go through the Datasheet .
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