Overview
The LM2903DMR2G is a dual independent precision voltage comparator produced by onsemi. This device is part of the LM393 series, known for its low offset voltage and versatility in various supply configurations. It can operate with a single supply ranging from 2.0 Vdc to 36 Vdc or with split supplies from +/-1.0 Vdc to +/-18 Vdc. The LM2903DMR2G is designed to offer high precision and reliability, making it suitable for a wide range of applications in consumer, automotive, and industrial electronics.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range (Single Supply) | 2.0 Vdc to 36 Vdc |
| Supply Voltage Range (Split Supply) | +/-1.0 Vdc to +/-18 Vdc |
| Input Offset Voltage | 2.0 mV (max) for LM393A, 5.0 mV (max) for LM293/393 |
| Input Bias Current | 25 nA |
| Input Offset Current | 5.0 nA |
| Current Drain | 0.4 mA (independent of supply voltage) |
| Output Voltage Compatibility | DTL, ECL, TTL, MOS, and CMOS Logic Levels |
| Operating Temperature Range | -40°C to 105°C |
| Package Type | Micro8 (8-pin) |
Key Features
- Low input offset voltage, making it suitable for high precision applications.
- Wide single-supply range and split-supply capability.
- Very low current drain independent of supply voltage.
- Low input bias and offset currents.
- Input common mode range to ground level.
- Differential input voltage range equal to the power supply voltage.
- Output voltage compatible with various logic levels (DTL, ECL, TTL, MOS, and CMOS).
- ESD clamps on the inputs for increased ruggedness without affecting performance.
Applications
- Consumer electronics: For applications requiring high precision and low power consumption.
- Automotive electronics: Suitable for the harsh environments and reliability requirements of automotive systems.
- Industrial electronics: Used in various industrial control and monitoring systems where precision and reliability are crucial.
- Medical devices: For applications that require high accuracy and low noise.
- Sensor circuits: Often used in sensor circuits to compare analog signals against a reference voltage.
Q & A
- What is the supply voltage range for the LM2903DMR2G?
The LM2903DMR2G can operate with a single supply ranging from 2.0 Vdc to 36 Vdc or with split supplies from +/-1.0 Vdc to +/-18 Vdc.
- What is the input offset voltage of the LM2903DMR2G?
The input offset voltage is as low as 2.0 mV (max) for LM393A and 5.0 mV (max) for LM293/393.
- What is the current drain of the LM2903DMR2G?
The current drain is very low, at 0.4 mA, and is independent of the supply voltage.
- What logic levels is the output voltage of the LM2903DMR2G compatible with?
The output voltage is compatible with DTL, ECL, TTL, MOS, and CMOS logic levels.
- What is the operating temperature range of the LM2903DMR2G?
The operating temperature range is -40°C to 105°C.
- What package type is the LM2903DMR2G available in?
The LM2903DMR2G is available in an 8-pin Micro8 package.
- What are some common applications of the LM2903DMR2G?
Common applications include consumer electronics, automotive electronics, industrial electronics, medical devices, and sensor circuits.
- Does the LM2903DMR2G have any built-in protection features?
Yes, it has ESD clamps on the inputs to increase the ruggedness of the device without affecting performance.
- What is the differential input voltage range of the LM2903DMR2G?
The differential input voltage range is equal to the power supply voltage.
- Is the LM2903DMR2G suitable for high precision applications?
Yes, it is highly suitable due to its low input offset voltage and other precision-related features.
