LF351 Op-Amp IC

10 June 2018 - 0 Comments

LF351 Op-Amp IC

LF351 IC Pinout

LF351 Pin Configuration

Pin No.	Pin Name	Description
1.	Offset Null 1	Pin used for remove the offset voltage and balance input voltage.
2.	Inverting Input	Inverting signal Input
3.	Non-inverting Input	Non-inverting signal Input
4.	VEE	Negative Supply Input (Ground)
5.	Offset Null 2	Pin used for remove the offset voltage and balance input voltage.
6.	Output	Output of op amp
7.	VCC	Positive Supply Input
8.	N.C.	Not Connected

Features

Low power consumption
Output short-circuit protection
High slew rate 16 V/us
Low input-bias and offset current
Latch up free operation
Internal Frequency compensation

Technical Specifications

Voltage Supply: ±18V
Input Supply range: ±15V
Differential Input Voltage: ±30V
Input Offset Voltage: 5mV
Junction Temperature: 115℃
(Soldering) Lead Temperature: 260℃
Power Dissipation: 670mW

LF351 Equivalents Op-amp ICs

LM301, CA3140, TLC271, ICL7611, TLC071, TLC081, NTE857M

LM741 (if input resistance is not a big issue)

Note: Complete technical information can be found in the LF351 Datasheet linked at the bottom of this page.

Where to Use LF351 IC?

LF351 is single operational amplifier with an internally compensated input offset voltage. It also provides wide bandwidth, low input bias current and offset current. Basically, LF351 is used in the circuits that need high input impedance, high speed integrators, Quick digital to analog converters, sample and hold circuits etc.

How to Use the IC?

The below circuit diagram is used to generate the square wave, by adding few resistor and capacitor externally. It is like a Schmitt trigger circuit that the reference voltage for the comparator action depends on the output voltage. For finding the value of the output frequency use the formula mentioned below:

FOSC = 1 / 2RFCF

Circuit Using LF351