OP637 Precision Op-Amp

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OP637 precision operational amplifier is made by using the complimentary MOS (CMOS) technology. The IC has range of working conditions a wide range of working voltages, and possesses direct interfacing capability with almost every PMOS, CMOS, and NMOS device. Moreover, the IC offers a wide array of features such as high noise immunity, ESD barring/reduction, and exceptionally low power dissipation.

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Precision operational amplifier

A Precision operational amplifier is an operational amplifier with better design specifications and topology than the conventional op-amp. Precision Op-amps are more accurate than your average general-purpose op-amps. In terms of design topology, Precision amplifiers have a better precision offset, zero-drift over time, lower internal noise (nV/√Hz), and input bias current. On the component scale, they have precise matching resistors etched in the substrate at the chip level.

For Example; a LM741 op-amp, has an offset voltage of 5mV. The offset voltage signifies the voltage that the user has to apply between the +ve and -ve of the IC, in order to get an output of 0V. On configuring the op-amp to operate at a gain of 100. The gain will not only multiply the input signal, but it will also multiply the offset voltage. This will result in the output voltage being off-value by a factor of +/-0.5V. On considering the OP177; a precision op-amp, with an offset voltage of 25uV. The same gain value of 100, would produce an error of only 2.5mV in a signal that has been amplified by a factor of 100.

OPA637 Pinout

OPA637 Pin Configuration

Pin No	Pin Name	Description
1	OFFSET TRIM 1	Offset Trim Pin 1
2	INV-INPUT	Inverting Input Of Amplifier
3	NON-INV-INPUT	Non Inverting Input Of Amplifier
4	-Vs	Negative Supply Voltage
5	OFFSET TRIM 2	Offset Trim Pin 2
6	OUTPUT	Output Of Amplifier
7	+Vs	Positive Supply Voltage
8	NC	No Connection