LM248N

Product Overview

Category: Integrated Circuit (IC)

Use: LM248N is a quad operational amplifier that is widely used in various electronic circuits for amplification, filtering, and signal conditioning purposes.

Characteristics: - Low input offset voltage - High gain bandwidth product - Wide supply voltage range - Low power consumption

Package: LM248N is available in a DIP-14 package, which stands for Dual In-line Package with 14 pins.

Essence: The essence of LM248N lies in its ability to provide multiple operational amplifiers in a single chip, making it a cost-effective and space-saving solution for circuit designers.

Packaging/Quantity: LM248N is typically sold in reels or tubes containing a specified quantity of ICs, such as 25 pieces per tube.

Specifications

• Supply Voltage Range: ±2V to ±18V
• Input Offset Voltage: 2mV (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Slew Rate: 0.5V/µs (typical)
• Input Bias Current: 20nA (maximum)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

LM248N has a total of 14 pins, each serving a specific function. The pin configuration is as follows:

1. Non-Inverting Input (Op-Amp 1)
2. Inverting Input (Op-Amp 1)
3. Output (Op-Amp 1)
4. VCC+ (Positive Power Supply)
5. Non-Inverting Input (Op-Amp 2)
6. Inverting Input (Op-Amp 2)
7. Output (Op-Amp 2)
8. VCC- (Negative Power Supply)
9. Non-Inverting Input (Op-Amp 3)
10. Inverting Input (Op-Amp 3)
11. Output (Op-Amp 3)
12. Ground (Common Reference)
13. Non-Inverting Input (Op-Amp 4)
14. Inverting Input (Op-Amp 4)

Functional Features

1. Low Input Offset Voltage: LM248N exhibits a low input offset voltage, ensuring accurate amplification and signal processing.

2. High Gain Bandwidth Product: With a high gain bandwidth product of 1MHz, LM248N can handle a wide range of frequencies effectively.

3. Wide Supply Voltage Range: The IC operates over a wide supply voltage range, allowing flexibility in various power supply configurations.

4. Low Power Consumption: LM248N is designed to consume minimal power, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Cost-effective solution due to multiple operational amplifiers on a single chip - Space-saving design - Low input offset voltage ensures accurate signal processing - Wide supply voltage range allows versatile applications - Low power consumption extends battery life

Disadvantages: - Limited gain bandwidth product compared to specialized operational amplifiers - Not suitable for high-frequency applications requiring ultra-fast response times

Working Principles

LM248N consists of four independent operational amplifiers that amplify the difference between the input voltages applied to their respective inputs. Each op-amp has a differential input stage, followed by a gain stage and an output buffer. The amplification factor is determined by external feedback components connected to the op-amp's inputs and outputs.

Detailed Application Field Plans

LM248N finds extensive application in various electronic circuits, including but not limited to: - Audio amplifiers - Active filters - Signal conditioners - Instrumentation amplifiers - Voltage regulators - Oscillators - Comparators

Detailed and Complete Alternative Models

1. LM324: Similar to LM248N, but with a lower gain bandwidth product of 0.7MHz.
2. LM358: Dual operational amplifier with similar characteristics, suitable for applications requiring fewer amplifiers.
3. TL084: Quad JFET-input operational amplifier with higher input impedance and lower input bias current.

These alternative models provide similar functionality and can be used as substitutes for LM248N depending on specific requirements.

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