LM311 DIFFERENTIAL VOLTAGE COMPARATOR IC SOP-8

The LM311 is a high-speed differential voltage comparator designed for operation from a single or dual power supply. It provides a wide range of operating voltage, high input impedance, and low output saturation voltage, making it ideal for general-purpose voltage comparison applications.

Key Features of LM311 Differential Voltage Comparator:

• • High Speed Operation: Fast response time, ideal for high-speed applications requiring rapid comparison of voltages.
  • Wide Operating Voltage Range: Operates from a single power supply ranging from 5V to 30V, or dual supplies from ±2.5V to ±15V.
  • Low Input Bias Current: Low input bias current ensures minimal error and accurate voltage comparisons.
  • High Input Impedance: Offers high input impedance and low output impedance, making it suitable for a variety of interfacing applications.
  • Low Output Saturation Voltage: Provides a low output saturation voltage, enabling it to drive various loads, including TTL, MOS, and RTL logic levels.
  • Adjustable Output Offset: Adjustable reference voltage allows setting the desired threshold for comparison.

Technical Specifications of LM311 Differential Voltage Comparator:

• • Model: LM311
  • Operating Voltage: 5V to 30V (single supply) or ±2.5V to ±15V (dual supply)
  • Response Time: 200ns (typical)
  • Input Bias Current: 250nA (typical)
  • Input Offset Voltage: 2mV (typical)
  • Output Current: 50mA (maximum)
  • Package: SOP-8
  • Operating Temperature Range: -40°C to 85°C

Mechanical Specifications of LM311 Differential Voltage Comparator:

• • Package Type: Small Outline Package (SOP-8)
  • Pin Count: 8 pins
  • Mounting Style: Surface-mount
  • Dimensions: Typically 4.9 mm x 3.9 mm

Schematic Diagram, Connection, Wiring, and Pinout of LM311 Differential Voltage Comparator:

• • Pin Configuration:
  • 1: GND – Ground connection.
  • 2: Inverting Input (IN-) – Input voltage to be compared.
  • 3: Non-Inverting Input (IN+) – Reference voltage for comparison.
  • 4: V_CC– – Negative supply voltage or ground for single supply.
  • 5: Output – Comparator output, open-collector.
  • 6: Strobe – Disables output when strobe is high.
  • 7: V_CC+ – Positive supply voltage.
  • 8: Balance/Balance/Strobe – Used for offset adjustment or strobe control.
  • Basic Wiring: Connect IN+ and IN- to the voltages you want to compare. The output goes low when IN- is higher than IN+. Connect the output pin to a pull-up resistor if driving TTL or CMOS logic levels.

Applications of LM311 Differential Voltage Comparator:

• • Zero-Crossing Detectors: Used in circuits requiring detection of zero crossings of AC signals.
  • Voltage Level Detectors: Suitable for detecting specific voltage thresholds in power supply monitoring.
  • Oscillators: Can be used in oscillator circuits due to its fast switching capabilities.
  • Pulse Width Modulators: Ideal for generating PWM signals for motor control and other applications.
  • Logic Level Shifters: Capable of interfacing between different logic levels.

DataSheet:

• • Download Datasheet

Equivalent of LM311 Differential Voltage Comparator:

• • LM339: A quad version of the LM311 with four comparators in one package.
  • LM193: A dual differential comparator with similar features and performance.

Keywords for LM311 Differential Voltage Comparator:

• • LM311
  • Differential Comparator
  • Voltage Comparator
  • SOP-8 Package
  • High-Speed Comparator
  • LM111, LM211, and LM311

Package Includes:

• • 1 x LM311 Differential Voltage Comparator IC SOP-8