LM311 Voltage comparator

The LM311 is a high-speed voltage comparator IC that compares two input voltage levels and outputs a digital signal indicating which input is higher. Manufactured by various semiconductor companies, including Texas Instruments, this versatile comparator is used in a wide range of applications requiring precise voltage comparison, such as threshold detection, waveform shaping, and pulse-width modulation. The LM311 operates with a single power supply and features open-collector outputs, making it compatible with various logic families.

Key Features:

• Voltage Comparator: Compares two input voltages and provides a digital output based on the comparison.
• High Speed: Fast response time suitable for time-critical applications.
• Wide Supply Voltage Range: Typically operates from 5V to 30V.
• Low Input Offset Voltage: Ensures accurate voltage comparison.
• Open-Collector Output: Allows for direct interface with other logic circuits.
• Strobe Capability: Allows for synchronizing multiple comparators.
• Package Types: Available in PDIP, SOIC, and other package options.

Technical Specifications:

• Input Offset Voltage: 2 mV (typical)
• Input Bias Current: 150 nA (typical)
• Response Time: 200 ns (typical)
• Supply Voltage Range: 5V to 30V
• Output Voltage Swing: Near ground to Vcc – 1.5V
• Operating Temperature Range: 0°C to +70°C
• Package Types: 8-pin PDIP, 8-pin SOIC, and others

Applications:

• Voltage Level Detection: Detects voltage levels in control and monitoring systems.
• Threshold Detection: Triggers events based on preset voltage thresholds.
• Pulse Width Modulation (PWM): Generates PWM signals based on voltage comparisons.
• Waveform Generation: Shapes waveforms in signal processing applications.
• Overvoltage Protection: Monitors voltage levels to protect sensitive circuits.
• Battery Management: Used in battery voltage monitoring and control circuits.

Datasheet:
For detailed technical information, refer to the LM311 Voltage Comparator Datasheet.