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LM2903DR
+BOMIC COMPARATOR DUAL 0.8MA 8-SOIC
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ManufacturerRohm Semiconductor
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Mfr. Part #LM2903DR
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Package SOIC (D)-8
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In Stock6320
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | Trophy |
| ProductStatus | Active |
| Type | General Purpose |
| NumberofElements | 2 |
| OutputType | CMOS, MOS, Open-Collector, TTL |
| Voltage-SupplySingle/Dual(±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage-InputOffset(Max) | 7mV @ 5V |
| Current-InputBias(Max) | 0.25µA @ 5V |
| Current-Output(Typ) | 16mA @ 5V |
| Current-Quiescent(Max) | 2.5mA |
| OperatingTemperature | -40°C ~ 125°C |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
| MountingType | Surface Mount |
Overview
Description
Key features of the LM2903DR include low power consumption, wide supply voltage range, and high input impedance, making it suitable for battery-powered and portable devices. It typically operates within a supply voltage range of 2V to 36V and can drive loads connected to a different power supply, facilitating versatile interfacing options.
The device comes in a small-outline SOIC-8 package, denoted by the "DR" in its name, which is suitable for surface-mount applications, saving space on printed circuit boards (PCBs). It is widely used in applications like zero-crossing detectors, signal conditioning, and threshold detectors due to its reliability and robust performance in harsh environments. Overall, the LM2903DR is a versatile and efficient choice for voltage comparison needs in electronic design.
Equivalent
Features
1. Dual Comparators: It contains two independent voltage comparators in a single package.
2. Wide Supply Voltage Range: Operates with a supply voltage from 2 V to 36 V, making it versatile for various applications.
3. Low Input Offset Voltage: Features low input offset voltage, enhancing precision in voltage comparison.
4. Open-Collector Output: The open-collector output allows for wired-OR connections and level shifting.
5. Low Power Consumption: Designed for energy efficiency, making it suitable for battery-powered devices.
6. Fast Response Time: Offers quick response times, beneficial for applications requiring fast switching.
7. Wide Temperature Range: Functions effectively within a broad temperature range, typically from -40°C to 85°C.
8. Compact Package: Comes in a small SOIC-8 package, facilitating space-saving designs.
9. High Compatibility: Compatible with a wide range of logic families and circuits.
These features make the LM2903DR suitable for various uses, including level detection, signal conditioning, and zero-crossing detectors.
Pinout
1. V+ (Pin 8): Supply voltage pin.
2. Output A (Pin 1): Output for the first comparator.
3. Inverting Input A (Pin 2): Inverting input for the first comparator.
4. Non-Inverting Input A (Pin 3): Non-inverting input for the first comparator.
5. GND (Pin 4): Ground pin, common for both comparators.
6. Non-Inverting Input B (Pin 5): Non-inverting input for the second comparator.
7. Inverting Input B (Pin 6): Inverting input for the second comparator.
8. Output B (Pin 7): Output for the second comparator.
The LM2903DR is used for comparing voltages and providing a digital output based on the comparison, commonly applied in systems where two analog signals need to be compared.
Manufacturer
Application
1. Voltage Comparisons: It compares voltages in power supply circuits, battery monitoring, and level detection.
2. Sensor Interface: Interfaces with temperature sensors, photo detectors, and other analog sensors.
3. Zero-Crossing Detectors: Used in AC signal processing to detect zero-crossing points.
4. Oscillator Circuits: Functions in square wave and pulse generation applications.
5. Window Comparators: Implements window comparator circuits for range detection.
6. Analog Signal Processing: Utilized in signal conditioning and analog-to-digital conversion systems.
7. Industrial Control Systems: Applied in automation and control systems for monitoring and protective functions.
These areas leverage the LM2903DR's low power consumption and ability to operate over a wide voltage range.