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 |
LF347 Features and Specification
- Input Offset Voltage of 5.0 mV Max (LF347B)
- Low Input Bias Current: 50 pA
- Low Input Noise Voltage: 16 nV/ Hz
- Wide Gain Bandwidth: 4.0 MHz
- High Slew Rate: 13V/µs
- Low Supply Current: 1.8 mA per Amplifier
- High Input Impedance: 1012 Ω
- High Common Mode and Supply Voltage Rejection Ratios: 10
Application
- Motor Integrated Systems: UPS
- Drives and Control Solutions: AC Inverters and VF Drives
- Renewables: Solar Inverters
- Pro Audio Mixers
- Oscilloscopes
LF347 Datasheet
You can download this datasheet for LF347 Quad JFET Input Op Amp (Wideband) from the link given below:
See Also: CD4510 BCD Up/Down Counter – Datasheet | CD4015 Dual 4-stage Static Shift Register – Datasheet | CD4522 Programmable BCD Divide-by-N Counter – Datasheet
