Overview
The LF412CP is a low-cost, high-speed, dual JFET-input operational amplifier produced by Texas Instruments. It is characterized by its very low input offset voltage and specified maximum input offset voltage drift. This device is designed to operate with low supply current while maintaining a large gain bandwidth product and a fast slew rate. The matched high-voltage JFET input provides very low input bias and offset currents, making it suitable for a variety of high-speed applications.
Key Specifications
| Parameter | Typical | Maximum |
|---|---|---|
| Input Offset Voltage (VIO) at 25°C | 3 mV | 3 mV |
| Input Bias Current (IIB) | 50 pA | 200 pA |
| Input Offset Current (IIO) | 25 pA | 100 pA |
| Supply Current (Iq) per Channel | 2.25 mA | 3.4 mA |
| Gain Bandwidth Product (GBW) | 3 MHz | |
| Slew Rate | 13 V/μs | |
| Common-Mode Rejection Ratio (CMRR) | 100 dB | 70 dB (Min) |
| Operating Temperature Range | 0°C to 70°C | |
| Supply Voltage Range | ±3.5V to ±18V | |
| Output Current | 25 mA | |
| Package Type | PDIP (8 pins) |
Key Features
- Low Input Bias Current: 50 pA typical
- Low Input Noise Current: 0.01 pA/√Hz typical
- Low Supply Current: 4.5 mA typical
- High Input Impedance: 10^12 Ω typical
- Internally Trimmed Offset Voltage
- Wide Gain Bandwidth: 3 MHz typical
- High Slew Rate: 13 V/μs typical
Applications
The LF412CP is suitable for various high-speed applications, including:
- High-speed integrators
- Digital-to-analog converters
- Sample-and-hold circuits
- Other circuits requiring low input offset voltage and high speed
Q & A
- What is the typical input offset voltage of the LF412CP?
The typical input offset voltage is 3 mV at 25°C. - What is the input bias current of the LF412CP?
The input bias current is typically 50 pA. - What is the gain bandwidth product of the LF412CP?
The gain bandwidth product is typically 3 MHz. - What is the slew rate of the LF412CP?
The slew rate is typically 13 V/μs. - What is the operating temperature range of the LF412CP?
The operating temperature range is from 0°C to 70°C. - What is the supply voltage range for the LF412CP?
The supply voltage range is ±3.5V to ±18V. - What is the common-mode rejection ratio (CMRR) of the LF412CP?
The CMRR is typically 100 dB. - What type of package does the LF412CP come in?
The LF412CP comes in an 8-pin PDIP package. - Is the LF412CP RoHS compliant?
Yes, the LF412CP is RoHS compliant. - What are some typical applications of the LF412CP?
Typical applications include high-speed integrators, digital-to-analog converters, and sample-and-hold circuits.
