LF347BD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Operational Amplifier
• Characteristics: High-performance, low-power quad operational amplifier
• Package: DIP-14 (Dual In-line Package with 14 pins)
• Essence: The LF347BD is a high-performance operational amplifier designed for a wide range of applications.
• Packaging/Quantity: Available in tubes or reels, with a quantity of 50 units per tube/reel.

Specifications

• Supply Voltage: ±5V to ±18V
• Input Offset Voltage: 3mV (maximum)
• Input Bias Current: 30nA (maximum)
• Input Offset Current: 5nA (maximum)
• Gain Bandwidth Product: 4MHz (typical)
• Slew Rate: 13V/µs (typical)
• Input Common Mode Range: V- + 1.5V to V+ - 1.5V
• Output Voltage Swing: V- + 1.5V to V+ - 1.5V

Pin Configuration

The LF347BD has a DIP-14 package with the following pin configuration:

__ __ V- | 1 14 | V+ Out1 | 2 13 | Out4 In1- | 3 12 | In4- In1+ | 4 11 | In4+ NC | 5 10 | NC In2+ | 6 9 | In3+ In2- | 7 8 | In3- ‾‾ ‾‾

Functional Features

• High gain and bandwidth: The LF347BD offers a gain bandwidth product of 4MHz, allowing it to handle high-frequency signals accurately.
• Low input offset voltage: With a maximum input offset voltage of 3mV, the LF347BD ensures precise amplification without significant errors.
• Low power consumption: The operational amplifier operates efficiently with low power requirements, making it suitable for battery-powered applications.
• Wide input common mode range: The LF347BD can accept a wide range of input voltages, enabling flexibility in various circuit designs.

Advantages and Disadvantages

Advantages: - High-performance characteristics - Low power consumption - Wide input common mode range - Suitable for high-frequency applications

Disadvantages: - Relatively higher input offset voltage compared to some other operational amplifiers - Limited output voltage swing range

Working Principles

The LF347BD is based on a differential amplifier configuration that amplifies the difference between its two input terminals. It utilizes internal transistors and feedback mechanisms to achieve high gain, low distortion, and accurate signal amplification. The operational amplifier operates within specified voltage ranges and provides a stable output proportional to the input signal.

Application Field Plans

The LF347BD is widely used in various applications, including:

1. Audio Amplification: The operational amplifier can be utilized in audio amplifiers to enhance sound signals with low distortion and high fidelity.
2. Signal Conditioning: It is commonly employed in signal conditioning circuits to amplify weak signals from sensors or transducers before further processing.
3. Active Filters: The LF347BD can be integrated into active filter circuits to shape and manipulate frequency response characteristics.
4. Instrumentation Amplifiers: It finds application in instrumentation amplifiers used for precise measurement and data acquisition systems.

Alternative Models

If the LF347BD is not available or does not meet specific requirements, alternative models with similar characteristics include:

1. LM324: A quad operational amplifier with low power consumption and a wide supply voltage range.
2. TL074: A high-performance operational amplifier with low noise and distortion characteristics.
3. AD8674: A precision operational amplifier with low input offset voltage and high gain accuracy.

These alternative models can be considered as substitutes for the LF347BD in various applications.

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