Overview
The LF412CPG4 is a low-cost, high-speed, JFET-input operational amplifier produced by Texas Instruments. This device is characterized by its very low input offset voltage and specified maximum input offset voltage drift. It is designed to operate with low supply current while maintaining a large gain bandwidth product and a fast slew rate. The LF412CPG4 is part of the LF412 series, which is known for its internally trimmed offset voltage and well-matched high-voltage JFET input devices, providing very low input bias and offset currents.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage | ±18V | V | ||
| Differential Input Voltage | ±30V | V | ||
| Input Offset Voltage | 1 mV | 3 mV | mV | |
| Input Offset Voltage Drift | 10 µV/°C | µV/°C | ||
| Input Bias Current | 50 pA | pA | ||
| Input Noise Current | 0.01 pA/Hz | pA/Hz | ||
| Supply Current | 1.8 mA | 4.5 mA | 6.5 mA | mA |
| Gain Bandwidth Product | 3 MHz | MHz | ||
| Slew Rate | 10 V/µs | 13 V/µs | V/µs | |
| Input Impedance | 10^12 Ω | Ω | ||
| Operating Temperature Range | 0°C | 70°C | °C |
Key Features
- Internally trimmed offset voltage: 1 mV (max)
- Low input bias current: 50 pA
- Low input noise current: 0.01 pA/Hz
- Wide gain bandwidth product: 3 MHz (min)
- High slew rate: 10 V/µs (min)
- Low supply current: 1.8 mA/Amplifier
- High input impedance: 10^12 Ω
- Low total harmonic distortion: ≤0.02%
- Fast settling time to 0.01%: 2 µs
Applications
The LF412CPG4 is suitable for a variety of high-speed and precision applications, including:
- High-speed integrators
- Digital-to-analog converters
- Sample-and-hold circuits
- Other circuits requiring low input offset voltage and drift, low input bias current, high input impedance, high slew rate, and wide bandwidth.
Q & A
- What is the typical input offset voltage of the LF412CPG4?
The typical input offset voltage is 1 mV, with a maximum of 3 mV at 25°C.
- What is the input bias current of the LF412CPG4?
The input bias current is typically 50 pA.
- What is the gain bandwidth product of the LF412CPG4?
The gain bandwidth product is at least 3 MHz.
- What is the slew rate of the LF412CPG4?
The slew rate is typically 13 V/µs, with a minimum of 10 V/µs.
- What is the operating temperature range of the LF412CPG4?
The operating temperature range is from 0°C to 70°C.
- What are the typical supply current requirements for the LF412CPG4?
The supply current is typically 4.5 mA, with a range from 1.8 mA to 6.5 mA per amplifier.
- What is the input impedance of the LF412CPG4?
The input impedance is typically 10^12 Ω.
- Can the LF412CPG4 handle high differential input voltages?
- Is the LF412CPG4 pin-compatible with other operational amplifiers?
- What is the total harmonic distortion of the LF412CPG4?
