Overview
The LM2903VQPWRG4 is a dual differential comparator integrated circuit produced by Texas Instruments. Although this specific part is now obsolete and no longer in production, it remains a significant component in the history of comparator technology. The LM2903 series is known for its versatility and wide range of applications due to its ability to operate over a broad supply voltage range of 2 V to 36 V. This device features two independent comparators, each capable of comparing differential voltages and providing a logic output based on the comparison result.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VIO) | VS = 5 to 36V, TA = 25°C | -2.5 | ±0.37 | 2.5 | mV |
| Input Bias Current (IB) | TA = 25°C | -25 | -25 | -250 | nA |
| Input Offset Current (IOS) | TA = 25°C | -10 | ±0.5 | 10 | nA |
| Common Mode Input Voltage Range (VICR) | TA = 25°C | 0 to VCC - 1.5 | V | ||
| Response Time | VCC = 5V, RL connected to 5V through 5.1kΩ, CL = 15pF | 1.3 | μs | ||
| Supply Current (ICC) | VCC = 5V, TA = 25°C | 2.5 | mA |
Key Features
- Wide Supply Voltage Range: Operates from 2 V to 36 V, making it versatile for various applications.
- Low Input Bias Current: High gain and minimal input bias current due to the PNP Darlington pair input stage.
- Fast Response Time: Quick response time of 1.3 μs with a 5 mV overdrive.
- Open-Drain Output: Allows configuration of the output's logic low voltage and enables AND functionality.
- High Common Mode Range: Input common mode voltage range from ground to VCC - 1.5 V, suitable for modern supply voltages like 3.3 V and 5 V.
Applications
- Voltage Monitoring and Detection: Used in systems that require monitoring of voltage levels, such as power supplies and battery management systems.
- Signal Processing and Conditioning: Employed in signal processing circuits to compare and condition signals.
- Industrial Control Systems: Utilized in industrial control systems for various sensing and control applications.
- Automotive Systems: Applied in automotive systems for voltage monitoring and other control functions.
Q & A
- What is the supply voltage range of the LM2903V?
The LM2903V operates over a supply voltage range of 2 V to 36 V.
- What is the typical response time of the LM2903V?
The typical response time is 1.3 μs with a 5 mV overdrive.
- What type of output does the LM2903V have?
The LM2903V has an open-drain output.
- What is the input bias current of the LM2903V?
The input bias current is typically -25 nA at 25°C.
- What is the common mode input voltage range of the LM2903V?
The common mode input voltage range is from ground to VCC - 1.5 V.
- Is the LM2903VQPWRG4 still in production?
No, the LM2903VQPWRG4 is obsolete and no longer in production.
- What are some common applications of the LM2903V?
Common applications include voltage monitoring, signal processing, industrial control systems, and automotive systems.
- How does the LM2903V handle temperature variations?
The device operates over a temperature range of -40°C to 125°C, with specifications adjusted accordingly.
- What is the significance of the Darlington pair input stage in the LM2903V?
The Darlington pair input stage provides high gain and minimal input bias current.
- Can the LM2903V be used in AND logic configurations?
Yes, the open-drain output allows the device to be used in AND logic configurations.
