LF347 Quad JFET Input Op Amp (Wideband)

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The LF347 IC is a Quad low-cost, high-speed, JFET-input operational amplifier. The IC requires a low supply current to maintain a large gain bandwidth product and a fast slew rate. In addition, the matched high-voltage JFET inputs provide very low input bias and offset current. The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits. The IC is always available in a 14 – pin hermetically sealed dual in line package (DIP). LF347 offers a wide variety of features such as high input impedance, high noise immunity, and low power dissipation.

Operational Amplifier

An Input operational amplifier is a voltage amplifying device; that is designed with the intention to be used with external feedback components such as resistors and capacitors between its I/O terminals. These feedback components determine the resulting function or “operation” of the amplifier and by virtue of the different feedback, configurations whether resistive, capacitive, or both.

LF347 Pinout

LF347 Pin Configuration

Pin No	Pin Name	Description
1	OUT 1	Output Of Amplifier 1
2	INPUT 1	Input Pin 1 of Amplifier 1
3	INPUT 2	Input Pin 2 of Amplifier 1
4	VCC	Collector Supply Voltage
5	INPUT 1	Input Pin 1 of Amplifier 2
6	INPUT 2	Input Pin 2 of Amplifier 2
7	OUT 2	Output Of Amplifier 2
8	OUT 3	Output Of Amplifier 3
9	INPUT 1	Input Pin 1 of Amplifier 3
10	INPUT 2	Input Pin 2 of Amplifier 3
11	VEE	Emitter Supply
12	INPUT 1	Input Pin 1 of Amplifier 4
13	INPUT 2	Input Pin 2 of Amplifier 4
14	OUT 4	Output Of Amplifier 4