LM308 Precision Op-Amp

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The LM308 IC is a precision operational amplifier. The IC is utilized in high speed amplification where precise control over the offset value is a must. LM308 always comes in a 8-pin hermetically sealed dual in line IC packaging (DIP). The IC has a wide variety of working voltages, a wide range of working conditions, and is compatible with almost every CMOS, NMOS, and PMOS device.

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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.

LM308 Pinout

LM308 Pin Configuration

Pin No	Pin Name	Description
1	COMP 1	Compensation Pin 1
2	-IN	Inverting Input Pin 1
3	+IN	Non Inverting Input Pin
4	V-	Negative Power Supply
5	NC	No Connection
6	OUTPUT	Output Pin
7	V+	Positive Power Supply
8	COMP 2	Compensation Pin 2