LF442CN

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LF442CN

IC OPAMP JFET 2 CIRCUIT 8DIP

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  • Mfr. Part #LF442CN
  • Package
  • Datasheet
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Specifications

Part Status Obsolete
Base Product Number LF442
Amplifier Type J-FET
Number of Circuits 2
Slew Rate 1V/µs
Gain Bandwidth Product 1 MHz
Current - Input Bias 10 pA
Voltage - Input Offset 1 mV
Current - Supply 400µA (x2 Channels)
Current - Output / Channel 6.8 mA
Voltage - Supply Span (Min) 10 V
Voltage - Supply Span (Max) 30 V
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole
Package 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
Packaging Tube

Overview

Description

The LF442CN is a dual operational amplifier (op-amp) designed for precision applications requiring low power consumption. It features low input bias and offset currents, making it ideal for use in high-impedance sensor interfacing and signal conditioning. The device operates with a wide supply voltage range, typically from ±5V to ±15V, and consumes low quiescent current, enabling efficient power usage in battery-operated devices.
Notable characteristics of the LF442CN include its low input offset voltage, low noise, and high input impedance, contributing to higher accuracy in analog signal processing. It also has a wide bandwidth and slew rate suitable for moderate-speed applications. The LF442CN is housed in a standard 8-pin dual in-line package (DIP), making it easy to integrate into various circuit designs.
Overall, the LF442CN is well-suited for applications such as instrumentation amplifiers, active filters, and other analog processing circuits where precision and low power are crucial.

Features

The LF442CN is a dual operational amplifier known for its low power consumption and high performance. Key features include:
1. Dual Op-Amp Configuration: It houses two op-amps in a single package, designed for applications requiring multiple amplifiers.
2. Low Power Consumption: It operates on minimal power, making it suitable for battery-powered devices.
3. Wide Supply Voltage Range: The LF442CN can function across a wide voltage range, typically from ±5V to ±18V.
4. Low Input Bias Current: This feature ensures reduced error in applications requiring high input impedance.
5. Low Offset Voltage: The design minimizes offset voltage, improving accuracy in signal processing.
6. High Input Impedance: This makes it ideal for applications where the source impedance is high.
7. High Slew Rate: Provides faster response times, beneficial in dynamic environments.
8. Low Noise: The low-noise operation is essential for precision applications like instrumentation or audio processing.
9. Temperature Range: It operates efficiently over a wide temperature range, enhancing its reliability in various environments.
These features make the LF442CN suitable for precision amplification, active filters, and other analog signal processing applications.

Package

The LF442CN is a dual operational amplifier that comes in an 8-pin through-hole plastic dual in-line package (PDIP).

Pinout

The LF442CN is a dual low-power operational amplifier. It is typically housed in an 8-pin Dual In-line Package (DIP). Here is a brief description of the pin functions:
1. Pin 1 (Output A): Output for the first operational amplifier.
2. Pin 2 (Inverting Input A): Inverting input for the first operational amplifier.
3. Pin 3 (Non-Inverting Input A): Non-inverting input for the first operational amplifier.
4. Pin 4 (V- or GND): Negative supply voltage or ground.
5. Pin 5 (Non-Inverting Input B): Non-inverting input for the second operational amplifier.
6. Pin 6 (Inverting Input B): Inverting input for the second operational amplifier.
7. Pin 7 (Output B): Output for the second operational amplifier.
8. Pin 8 (V+ or Vcc): Positive supply voltage.
The LF442CN is known for its low power consumption and high input impedance, making it suitable for battery-operated devices and systems requiring low power.

Manufacturer

The LF442CN is a low-power dual operational amplifier originally manufactured by National Semiconductor. National Semiconductor was a company that specialized in the design and manufacture of analog devices and subsystems. The company was well-regarded for producing power management integrated circuits, display drivers, audio and operational amplifiers, communication interface products, and data conversion solutions. In 2011, National Semiconductor was acquired by Texas Instruments, a major player in the semiconductor industry. Texas Instruments is known for developing a wide range of electronic components, including analog electronics, embedded processors, and other semiconductor solutions, serving various industries such as automotive, industrial, personal electronics, communications, and enterprise systems.

Application

The LF442CN is a low-power dual operational amplifier known for its high input impedance and low bias current. It is commonly used in applications such as precision amplifiers, active filters, integrators, and sample-and-hold circuits. Its low power consumption makes it suitable for battery-powered devices. Additionally, it is used in sensor signal conditioning, data acquisition systems, and analog computing tasks, offering reliable performance in environments where power efficiency and precision are crucial.

Equivalent

The LF442CN is a dual low-power JFET-input operational amplifier. Equivalent products with similar specifications include the TL072, TL082, and LF353. These op-amps offer similar low-noise, low-bias current, and wide bandwidth characteristics, making them suitable replacements in many circuits. Always check the datasheet to ensure compatibility with your specific application.

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