LF347N

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: LF347N is a versatile operational amplifier that provides high performance and low power consumption in a compact package.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: ±3V to ±18V
• Input Offset Voltage: Max. 5mV
• Input Bias Current: Max. 200nA
• Input Offset Current: Max. 50nA
• Gain Bandwidth Product: 4MHz
• Slew Rate: 13V/µs
• Input Common Mode Voltage Range: V- + 1.5V to V+ - 1.5V
• Output Voltage Swing: V- + 1.5V to V+ - 1.5V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LF347N has a total of 14 pins arranged as follows:

___________ NC --|1 14|-- V+ IN1--|2 13|-- OUT1 IN2--|3 12|-- V- IN3--|4 11|-- OUT2 IN4--|5 10|-- NC OUT4-|6 9|-- NC OUT3-|7 8|-- NC |__________|

Functional Features

• High gain and bandwidth: The LF347N offers a gain bandwidth product of 4MHz, allowing it to handle a wide range of signals accurately.
• Low input offset voltage: With a maximum offset voltage of 5mV, the LF347N ensures precise amplification without significant errors.
• Low power consumption: The operational amplifier is designed to operate with low power requirements, making it suitable for battery-powered applications.
• Wide input common mode voltage range: The LF347N can accept input signals within a broad voltage range, enhancing its versatility in various applications.

Advantages and Disadvantages

Advantages: - High performance and accuracy - Low power consumption - Versatile input voltage range - Compact package size

Disadvantages: - Limited output voltage swing - Relatively low slew rate compared to some modern alternatives

Working Principles

The LF347N is based on a differential amplifier configuration that amplifies the voltage difference between its inputs. It utilizes internal transistors and feedback mechanisms to achieve high gain, low distortion, and stable operation. By adjusting the external resistors and capacitors connected to the pins, the amplifier's behavior can be tailored to specific application requirements.

Detailed Application Field Plans

The LF347N finds applications in various fields, including:

1. Audio Amplification: The amplifier's low distortion and wide bandwidth make it suitable for audio signal amplification in audio systems, mixers, and musical instruments.
2. Signal Conditioning: It can be used to amplify weak signals from sensors or transducers before further processing or analysis.
3. Active Filters: The LF347N can be employed in active filter circuits to shape frequency response characteristics.
4. Instrumentation Amplifiers: It can serve as a building block for precision instrumentation amplifiers used in measurement and control systems.
5. Voltage Controlled Oscillators (VCOs): The LF347N can be utilized to generate oscillations in VCO circuits for frequency modulation applications.

Detailed and Complete Alternative Models

Some alternative models to LF347N that offer similar functionality include:

1. LM324: A quad operational amplifier with similar specifications and pin configuration.
2. TL074: Another quad operational amplifier with higher slew rate and wider temperature range.
3. OP4177: A low-power, high-precision quad operational amplifier suitable for battery-powered applications.

These alternatives can be considered based on specific requirements and availability in the market.

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