LF411 IC – JFET Input Operational Amplifier – DIP-8
🎛️ LF411 IC – Low Offset JFET Input Operational Amplifier – DIP-8
The LF411 is a high-performance JFET-input operational amplifier designed for applications that require low offset voltage, high input impedance, and low input bias current. It combines the advantages of bipolar and JFET technology, making it ideal for precision analog signal processing, sensor interfacing, and instrumentation applications.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| IC Type | Single JFET Input Operational Amplifier |
| Input Offset Voltage | Typically 1 mV |
| Input Bias Current | Typically 30 pA |
| Input Resistance | >10⁷ MΩ |
| Slew Rate | 15 V/µs |
| Gain Bandwidth Product | 3 MHz |
| Common Mode Rejection | 100 dB |
| Supply Voltage Range | ±3V to ±18V or 6V to 36V (dual/single) |
| Output Voltage Swing | ±13V (with ±15V supply) |
| Package Type | DIP-8 |
| Short-Circuit Protection | Yes |
📌 Pin Configuration (DIP-8)
| Pin | Function |
|---|---|
| 1 | Offset Null |
| 2 | Inverting Input (–) |
| 3 | Non-Inverting Input (+) |
| 4 | V− (Negative Supply) |
| 5 | Offset Null |
| 6 | Output |
| 7 | V+ (Positive Supply) |
| 8 | NC (Not Connected) |
🛠️ Key Features
Ultra-low input bias current (picoamp range)
Very high input impedance
Low input offset voltage
Wide supply voltage range
Fast response with high slew rate
Stable with unity gain
🧠 Applications
Precision signal amplification
Medical instrumentation
High-impedance sensor interfacing
Data acquisition systems
Active filters and integrators
Sample-and-hold amplifiers