Overview
The LF347N/NOPB is a high-speed, quad JFET input operational amplifier produced by Texas Instruments. This device is part of the BI-FET II technology family, known for its internally trimmed input offset voltage, low input bias and offset currents, and high input impedance. The LF347N/NOPB is designed to offer a balance between low supply current and high performance, making it suitable for a variety of applications requiring fast and accurate signal processing.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | PDIP (N) | |
| Pins | 14 | |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage | ±22V | |
| Differential Input Voltage | ±38V | |
| Input Offset Voltage | 5 mV max | |
| Input Bias Current | 50 pA | |
| Input Noise Current | 0.01 pA/√Hz | |
| Gain Bandwidth Product | 4 MHz | |
| Slew Rate | 13 V/μs | |
| Supply Current | 7.2 mA | |
| Total Harmonic Distortion | ≤0.02% | |
| 1/f Noise Corner | 50 Hz | |
| Settling Time to 0.01% | 2 μs |
Key Features
- Internally Trimmed Offset Voltage: 5 mV max
- Low Input Bias Current: 50 pA
- Low Input Noise Current: 0.01 pA/√Hz
- Wide Gain Bandwidth: 4 MHz
- High Slew Rate: 13 V/μs
- Low Supply Current: 7.2 mA
- High Input Impedance: 10^12 Ω
- Low Total Harmonic Distortion: ≤0.02%
- Low 1/f Noise Corner: 50 Hz
- Fast Settling Time to 0.01%: 2 μs
Applications
The LF347N/NOPB is versatile and can be used in various high-speed applications, including:
- High-speed integrators
- Fast D/A converters
- Sample-and-hold circuits
- Universal state variable filters
- Other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate, and wide bandwidth.
Q & A
- What is the package type of the LF347N/NOPB?
The LF347N/NOPB is available in a PDIP (N) package with 14 pins.
- What is the operating temperature range of the LF347N/NOPB?
The operating temperature range is from 0 to 70°C.
- What is the maximum input offset voltage of the LF347N/NOPB?
The maximum input offset voltage is 5 mV.
- What is the slew rate of the LF347N/NOPB?
The slew rate is 13 V/μs.
- What is the gain bandwidth product of the LF347N/NOPB?
The gain bandwidth product is 4 MHz.
- What is the typical supply current of the LF347N/NOPB?
The typical supply current is 7.2 mA.
- What are some common applications of the LF347N/NOPB?
Common applications include high-speed integrators, fast D/A converters, sample-and-hold circuits, and universal state variable filters.
- Is the LF347N/NOPB pin-compatible with other operational amplifiers?
Yes, it is pin-compatible with the standard LM148.
- What is the maximum total harmonic distortion of the LF347N/NOPB?
The maximum total harmonic distortion is ≤0.02%.
- What is the 1/f noise corner frequency of the LF347N/NOPB?
The 1/f noise corner frequency is 50 Hz.
- How long does it take for the LF347N/NOPB to settle to 0.01%?
The settling time to 0.01% is 2 μs.
