Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | Signature |
| Part Status | Not For New Designs |
| Type | General Purpose |
| Number of Elements | 2 |
| Output Type | CMOS, MOS, Open-Collector, TTL |
| Voltage - Supply, Single/Dual (±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 7mV @ 5V |
| Current - Input Bias(Max) | 0.25µA @ 5V |
| Current - Output (Typ) | 16mA @ 5V |
| Current - Quiescent (Max) | 2.5mA |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Overview
Description
The LM2903DT is a dual differential comparator integrated circuit, commonly used in electronic applications for comparing voltage levels. It falls under the LM2903 series of devices, designed to operate with a single or dual power supply. The "DT" in its designation typically refers to a specific package type or feature set, such as a surface-mount package like the SOIC (Small Outline Integrated Circuit).
Key features of the LM2903DT include low input offset voltage, low power consumption, and the ability to operate over a wide range of supply voltages, typically from 2V to 36V. It provides open-collector outputs, allowing it to interface with a variety of logic levels and other circuits. The device is known for its reliability and stability, making it suitable for use in industrial, automotive, and consumer electronics applications. Its typical applications include zero-crossing detectors, voltage comparators, and various sensor interfacing solutions.
Key features of the LM2903DT include low input offset voltage, low power consumption, and the ability to operate over a wide range of supply voltages, typically from 2V to 36V. It provides open-collector outputs, allowing it to interface with a variety of logic levels and other circuits. The device is known for its reliability and stability, making it suitable for use in industrial, automotive, and consumer electronics applications. Its typical applications include zero-crossing detectors, voltage comparators, and various sensor interfacing solutions.
Equivalent
The LM2903DT is a dual comparator IC. Equivalent products include the LM393 LM2903, LM393N, and LM293. These alternatives provide similar functionality and characteristics, such as dual differential voltage comparator capabilities, making them suitable substitutes in most applications. Always check pin configurations and electrical specifications to ensure compatibility with your circuit.
Features
The LM2903DT is a dual differential comparator designed for various applications requiring low power consumption and high performance. Key features include:
1. Dual Comparator: It contains two independent voltage comparators.
2. Wide Supply Voltage Range: Operates from 2V to 36V.
3. Low Supply Current: Minimizes power consumption with low quiescent current.
4. Open Collector Output: Allows for wired logic connections and interfacing with other logic circuits.
5. Low Input Offset Voltage: Enhances precision and accuracy in signal comparison.
6. Wide Input Common-Mode Voltage Range: Extends from 0V to VCC - 1.5V.
7. Input Offset Current: Low input offset current for high precision.
8. Temperature Range: Ensures reliable operation over a wide temperature range, typically -40°C to +125°C.
9. Package Options: Available in SOIC-8 package for compact designs.
These features make the LM2903DT suitable for applications in industrial, automotive, and consumer electronics that require reliable voltage comparison.
1. Dual Comparator: It contains two independent voltage comparators.
2. Wide Supply Voltage Range: Operates from 2V to 36V.
3. Low Supply Current: Minimizes power consumption with low quiescent current.
4. Open Collector Output: Allows for wired logic connections and interfacing with other logic circuits.
5. Low Input Offset Voltage: Enhances precision and accuracy in signal comparison.
6. Wide Input Common-Mode Voltage Range: Extends from 0V to VCC - 1.5V.
7. Input Offset Current: Low input offset current for high precision.
8. Temperature Range: Ensures reliable operation over a wide temperature range, typically -40°C to +125°C.
9. Package Options: Available in SOIC-8 package for compact designs.
These features make the LM2903DT suitable for applications in industrial, automotive, and consumer electronics that require reliable voltage comparison.
Pinout
The LM2903DT is a dual comparator integrated circuit. It comes in an 8-pin package, typically a SOIC-8 for the DT version. The pin functions are as follows:
1. Pin 1 (OUT1): Output of Comparator 1
2. Pin 2 (IN1−): Inverting Input of Comparator 1
3. Pin 3 (IN1+): Non-Inverting Input of Comparator 1
4. Pin 4 (VEE/GND): Ground or negative supply voltage
5. Pin 5 (IN2+): Non-Inverting Input of Comparator 2
6. Pin 6 (IN2−): Inverting Input of Comparator 2
7. Pin 7 (OUT2): Output of Comparator 2
8. Pin 8 (VCC): Positive supply voltage
The LM2903 is used for comparing voltages applied to the inputs and provides outputs based on the comparison. It can operate from a single power supply or dual supplies, and it is commonly used in various applications involving voltage comparison, zero-crossing detectors, and level shifting.
1. Pin 1 (OUT1): Output of Comparator 1
2. Pin 2 (IN1−): Inverting Input of Comparator 1
3. Pin 3 (IN1+): Non-Inverting Input of Comparator 1
4. Pin 4 (VEE/GND): Ground or negative supply voltage
5. Pin 5 (IN2+): Non-Inverting Input of Comparator 2
6. Pin 6 (IN2−): Inverting Input of Comparator 2
7. Pin 7 (OUT2): Output of Comparator 2
8. Pin 8 (VCC): Positive supply voltage
The LM2903 is used for comparing voltages applied to the inputs and provides outputs based on the comparison. It can operate from a single power supply or dual supplies, and it is commonly used in various applications involving voltage comparison, zero-crossing detectors, and level shifting.
Manufacturer
The LM2903DT is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of semiconductor products. The company serves a variety of sectors, including automotive, industrial, personal electronics, and communications equipment. STMicroelectronics is known for its innovation in microelectronics and its comprehensive portfolio that includes products like microcontrollers, sensors, power management devices, and analog components. With a strong focus on sustainability and advanced technologies, the company plays a significant role in the semiconductor industry.
Application
The LM2903DT is a dual differential comparator commonly used in various applications. It is suited for use in voltage level detection, zero-crossing detectors, and analog signal processing. In automotive systems, it can be used for battery management and sensor interfacing. It is also employed in industrial control systems for monitoring and control tasks. The comparator is useful in power management systems for over/under voltage detection and in consumer electronics for signal conditioning. Its ability to operate over a wide range of voltages makes it versatile for both AC and DC signal applications. Overall, its stability and low power consumption make it ideal for precision and low-power design requirements.
Package
The LM2903DT is a dual comparator integrated circuit from STMicroelectronics. It is housed in a standard SOIC-8 (Small Outline Integrated Circuit) package.
