LM211QDRG4

Product Overview

Category: Integrated Circuits (ICs)

Use: LM211QDRG4 is a high-speed voltage comparator designed for use in industrial, automotive, and consumer applications. It is commonly used in systems that require fast response times and precise voltage level detection.

Characteristics: - High-speed operation - Wide input voltage range - Low input offset voltage - Low output saturation voltage - Rail-to-rail output swing capability

Package: The LM211QDRG4 comes in a small outline package (SOIC) with 8 pins. This package offers excellent thermal performance and ease of handling during assembly.

Essence: The essence of the LM211QDRG4 is its ability to compare two input voltages and provide a digital output based on the comparison result. It is widely used in various electronic systems to perform tasks such as level shifting, threshold detection, and signal conditioning.

Packaging/Quantity: The LM211QDRG4 is typically available in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV (maximum)
• Response Time: 9ns (typical)
• Output Current: 20mA (maximum)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM211QDRG4 has 8 pins arranged as follows:

___________ V+ | | V- IN- | | OUT IN+ | | NC GND |___________|

Pin Description: - V+: Positive supply voltage - V-: Negative supply voltage (ground) - IN-: Inverting input - IN+: Non-inverting input - OUT: Output - NC: No connection (unused pin)

Functional Features

1. High-Speed Operation: The LM211QDRG4 is capable of operating at high speeds, making it suitable for applications that require fast response times.

2. Wide Input Voltage Range: It can accept a wide range of input voltages, allowing flexibility in various voltage level detection applications.

3. Low Input Offset Voltage: The low input offset voltage ensures accurate and precise voltage comparisons.

4. Low Output Saturation Voltage: The LM211QDRG4 exhibits low saturation voltage, minimizing power dissipation and improving overall efficiency.

5. Rail-to-Rail Output Swing Capability: The output swing covers the entire supply voltage range, enabling full utilization of the available dynamic range.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick response times. - Wide input voltage range provides flexibility in voltage level detection. - Low input offset voltage ensures accurate comparisons. - Low output saturation voltage minimizes power dissipation. - Rail-to-rail output swing capability maximizes dynamic range utilization.

Disadvantages: - Limited number of pins may restrict the number of inputs/outputs in complex systems. - Requires external power supply for operation.

Working Principles

The LM211QDRG4 operates based on the principle of voltage comparison. It compares the voltages applied to its non-inverting and inverting inputs and produces a digital output based on the result of this comparison. When the voltage at the non-inverting input is higher than the voltage at the inverting input, the output switches to a high state. Conversely, when the voltage at the inverting input is higher, the output switches to a low state.

Detailed Application Field Plans

The LM211QDRG4 finds application in various fields, including:

1. Industrial Control Systems: It is used in control systems to monitor and compare voltage levels, enabling precise control of industrial processes.

2. Automotive Electronics: The LM211QDRG4 is employed in automotive applications such as battery management systems, motor control, and safety systems for voltage level detection and monitoring.

3. Consumer Electronics: It can be found in consumer electronics devices like audio amplifiers, power supplies, and battery chargers for voltage level detection and signal conditioning.

4. Communication Systems: The LM211QDRG4 is utilized in communication systems for threshold detection and signal processing tasks.

Detailed and Complete Alternative Models

1. LM311: Similar to the LM211QDRG4, the LM311 is a high-speed voltage comparator with comparable specifications and features.

2. LM339: The LM339 is a quad voltage comparator that offers multiple comparators in a single package, providing increased functionality.

3. LM393: This dual voltage comparator is commonly used in low-power applications and offers similar functionality to the LM211QDRG4.

4. LT1016: The LT1016 is an ultra-fast voltage comparator with superior response times and precision, suitable for demanding applications