LM725 IC is an instrumentation operational amplifier featuring superior performance in applications where low noise, low drift, and accurate closed-loop gain is required. With high common mode rejection and offset null capability, it is especially suited for low level instrumentation applications over a wide supply voltage range. The IC is available in an 8 – pin hermetically sealed dual in line IC packaging (DIP). The IC has a wide variety of working conditions, a wide range of working voltages, and is compatible with almost every known CMOS, NMOS, and PMS device. LM725 offers many additional features such as ESD protection and excellent thermal cycling.
Instrumentation Operational Amplifier
Instrumentation amplifiers are a type of operational amplifiers with additional input buffer stages. The addition of input buffer stages makes it easy to match the impedance of the amplifier with the preceding stage. Instrumentation operational amplifiers are commonly used in industrial test and measurement applications. The instrumentation amplifier also has some useful features like low offset voltage, high CMRR (Common mode rejection ratio), high input resistance, high gain, etc.
LM725 Pinout
LM725 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OFFSET NULL 1 | Offset Null Pin 1 |
| 2 | INV-INPUT | Inverting Input Pin |
| 3 | NON-INV-INPUT | Non Inverting Input Pin |
| 4 | V- | Negative Power Supply |
| 5 | COMP | Compensation Pin |
| 6 | OUTPUT | Output Pin |
| 7 | V+ | Positive Power Supply |
| 8 | OFFSET NULL 2 | Offset Null Pin 2 |
LM725 Features and Specification
- High open loop gain 3,000,000
- Low input voltage drift 0.6 µV/˚C
- High common mode rejection 120 dB
- Low input noise current 0.15 pA/√Hz
- Low input offset current 2 nA
- High input voltage range ±14V
- Wide power supply range ±3V to ±22V
- Offset null capability
- Output short circuit protection
Application
- Thermocouple Amplifier
- Photodiode Amplifier
- ±100V Common Mode Range Differential Amplifier
- Instrumentation Amplifier
LM725 Datasheet
You can download this datasheet for LM725 Instrumentation Op-Amp from the link given below:
See Also: CD4584 Hex Schmitt Trigger – Datasheet | CD4536 Programmable Timer – Datasheet | CD4075 Triple 3-Input OR Gate – Datasheet
