LM2903AM8-13

Product Overview

Category: Integrated Circuits (ICs)

Use: The LM2903AM8-13 is a dual voltage comparator that operates from a single power supply. It is designed to compare two voltages and provide a digital output indicating the larger voltage. This makes it suitable for various applications such as level shifting, threshold detection, and signal conditioning.

Characteristics: - Dual voltage comparator - Single power supply operation - Low input offset voltage - Wide range of operating voltage - High output sink current capability - Low output saturation voltage

Package: The LM2903AM8-13 is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package offers compact size and easy integration into circuit boards.

Essence: The essence of the LM2903AM8-13 lies in its ability to accurately compare voltages and provide a digital output based on the comparison result. Its low input offset voltage and wide operating voltage range make it suitable for precision applications.

Packaging/Quantity: The LM2903AM8-13 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 2 V to 36 V
• Input Offset Voltage: ±1 mV (maximum)
• Input Bias Current: ±25 nA (maximum)
• Output Sink Current: 16 mA (minimum)
• Output Saturation Voltage: 250 mV (maximum)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2903AM8-13 has the following pin configuration:

___________ NC |1 8| VCC+ IN- |2 7| OUT IN+ |3 6| VCC- NC |4 5| GND ‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Dual voltage comparator: Allows comparison of two input voltages.
• Single power supply operation: Can be powered by a single voltage source, simplifying the circuit design.
• Low input offset voltage: Ensures accurate voltage comparison.
• Wide range of operating voltage: Provides flexibility in various applications.
• High output sink current capability: Enables driving of external loads.
• Low output saturation voltage: Minimizes power dissipation and improves efficiency.

Advantages and Disadvantages

Advantages: - Accurate voltage comparison - Wide operating voltage range - Low power consumption - Compact package size - Easy integration into circuits

Disadvantages: - Limited number of comparators (dual) - Not suitable for high-frequency applications

Working Principles

The LM2903AM8-13 compares the voltages applied to its IN+ and IN- inputs. When the voltage at IN+ is higher than the voltage at IN-, the output (OUT) goes high. Conversely, when the voltage at IN- is higher, the output goes low. The comparator's internal circuitry amplifies and compares the input voltages to determine the output state.

Detailed Application Field Plans

The LM2903AM8-13 can be used in various applications, including:

1. Level shifting: It can be used to shift the voltage levels of signals between different logic families or systems.
2. Threshold detection: It can detect when a voltage crosses a specific threshold, triggering further actions.
3. Signal conditioning: It can be used to condition analog signals before further processing or conversion.
4. Battery monitoring: It can compare battery voltages to determine their relative levels.
5. Motor control: It can be used in motor control circuits to compare feedback voltages and adjust motor speed or direction.

Detailed and Complete Alternative Models

1. LM393: Dual voltage comparator with similar specifications and pin configuration.
2. LM311: Single voltage comparator with higher speed and wider operating temperature range.
3. LM339: Quad voltage comparator with additional comparators for more complex applications.
4. LM324: Quad operational amplifier with built-in voltage comparators.

These alternative models offer different features and capabilities, allowing users to choose the most suitable option for their specific requirements.

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