LM211DR

Product Overview

Category: Integrated Circuit (IC)

Use: LM211DR is a high-speed voltage comparator designed for use in various applications such as analog-to-digital converters, oscillators, and waveform generators.

Characteristics: - High speed: LM211DR operates at a high speed of up to 50 ns response time. - Wide input voltage range: It can handle input voltages ranging from -15V to +15V. - Low input offset voltage: The device has a low input offset voltage of ±1 mV, ensuring accurate comparisons. - Low power consumption: LM211DR consumes minimal power, making it suitable for battery-powered applications. - Rail-to-rail output: The output swings from ground to the positive supply voltage, allowing for maximum dynamic range.

Package: LM211DR is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of LM211DR lies in its ability to compare two input voltages and provide a digital output based on the comparison result.

Packaging/Quantity: LM211DR is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: ±2V to ±18V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Response Time: 50ns
• Output Current: 20mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

LM211DR features the following pin configuration:

1. VCC: Positive supply voltage
2. IN+: Non-inverting input terminal
3. IN-: Inverting input terminal
4. GND: Ground reference
5. OUT: Digital output
6. NC: No connection
7. NC: No connection
8. VEE: Negative supply voltage

Functional Features

• High-speed voltage comparison
• Wide input voltage range
• Rail-to-rail output swing
• Low power consumption
• Low input offset voltage for accurate comparisons

Advantages and Disadvantages

Advantages: - High-speed operation enables quick response in various applications. - Wide input voltage range allows for versatile use. - Low power consumption makes it suitable for battery-powered devices. - Accurate comparisons due to low input offset voltage.

Disadvantages: - Limited output current capability (20mA). - Requires external power supply.

Working Principles

LM211DR works on the principle of comparing two input voltages, IN+ and IN-. The device amplifies the voltage difference between these inputs and provides a digital output based on the comparison result. When IN+ is greater than IN-, the output goes high, and when IN- is greater than IN+, the output goes low.

Detailed Application Field Plans

LM211DR finds application in various fields, including: 1. Analog-to-digital converters (ADCs) 2. Oscillators 3. Waveform generators 4. Voltage level detection circuits 5. Threshold detectors

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LM211DR are: 1. LM311: Similar functionality with improved specifications. 2. LM339: Quad voltage comparator with lower power consumption. 3. LM393: Dual voltage comparator with wide supply voltage range.

These alternative models offer similar features and can be used as replacements depending on specific requirements.

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