Overview
The LF356MX/NOPB is a high-performance, monolithic JFET input operational amplifier produced by Texas Instruments. It is part of the LFx5x series, which incorporates well-matched, high-voltage JFETs on the same chip with standard bipolar transistors using BI-FET™ Technology. This amplifier is known for its low input bias and offset currents, low offset voltage, and low offset voltage drift. It also features an offset adjust mechanism that does not degrade drift or common-mode rejection. The LF356MX/NOPB is designed for high slew rate, wide bandwidth, extremely fast settling time, and low noise characteristics, making it suitable for a variety of high-speed and precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage | ±15 to ±20 | V |
| Differential Input Voltage | ±40 | V |
| Input Bias Current | 30 pA | - |
| Input Offset Current | 3 pA | - |
| Input Impedance | 10^12 Ω | - |
| Common-Mode Rejection Ratio | 100 dB | - |
| DC Voltage Gain | 106 dB | - |
| Slew Rate | 12 V/μs | - |
| Gain Bandwidth | 5 MHz | - |
| Settling Time to 0.01% | 1.5 μs | - |
| Input Noise Voltage | 12 nV/√Hz | - |
Key Features
- Low Input Bias and Offset Currents: The LF356MX/NOPB features low input bias current (30 pA) and low input offset current (3 pA), making it ideal for low noise applications.
- High Input Impedance: With an input impedance of 10^12 Ω, this amplifier is suitable for high impedance buffering applications.
- Fast Slew Rate and Settling Time: The device has a high slew rate of 12 V/μs and an extremely fast settling time to 0.01% of 1.5 μs, which is beneficial for high-speed applications.
- Wide Gain Bandwidth: The LF356MX/NOPB has a gain bandwidth of 5 MHz, making it suitable for wideband applications.
- Low Noise Characteristics: It features low input noise voltage (12 nV/√Hz) and a low 1/f noise corner, which is advantageous for low noise applications.
- Large Differential and Common-Mode Input Voltage Capability: The amplifier can handle large differential input voltages and common-mode input voltages that can exceed the positive supply by approximately 100 mV.
- Offset Adjust Without Degradation: The offset adjust mechanism does not degrade drift or common-mode rejection, ensuring stable performance.
Applications
- Precision High-Speed Integrators: The LF356MX/NOPB is suitable for precision integration tasks due to its high slew rate and fast settling time.
- Fast D/A and A/D Converters: Its high bandwidth and low noise characteristics make it ideal for fast data conversion applications.
- High Impedance Buffers: The high input impedance of the amplifier makes it a good choice for buffering high impedance sources.
- Wideband, Low Noise, Low Drift Amplifiers: It is used in applications requiring low noise, low drift, and wide bandwidth.
- Logarithmic Amplifiers and Photocell Amplifiers: The LF356MX/NOPB can be used in logarithmic and photocell amplifier circuits due to its high input impedance and low noise characteristics.
- Sample and Hold Circuits: Its fast settling time and high slew rate make it suitable for sample and hold applications.
Q & A
- What is the package type of the LF356MX/NOPB?
The LF356MX/NOPB is packaged in an SOIC (D) package with 8 pins.
- What is the operating temperature range of the LF356MX/NOPB?
The operating temperature range is from 0°C to 70°C.
- What is the slew rate of the LF356MX/NOPB?
The slew rate is 12 V/μs.
- What is the gain bandwidth of the LF356MX/NOPB?
The gain bandwidth is 5 MHz.
- What are the key noise characteristics of the LF356MX/NOPB?
The amplifier features low input noise voltage of 12 nV/√Hz and a low 1/f noise corner.
- Can the LF356MX/NOPB handle large differential input voltages?
Yes, it can handle large differential input voltages without a significant increase in input current.
- What is the common-mode rejection ratio of the LF356MX/NOPB?
The common-mode rejection ratio is 100 dB.
- What are some typical applications of the LF356MX/NOPB?
Typical applications include precision high-speed integrators, fast D/A and A/D converters, high impedance buffers, and wideband, low noise, low drift amplifiers.
- How does the offset adjust mechanism work in the LF356MX/NOPB?
The offset adjust mechanism does not degrade drift or common-mode rejection, ensuring stable performance.
- What is the input impedance of the LF356MX/NOPB?
The input impedance is 10^12 Ω.
