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.
- 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
- 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.