Overview
The LM2901DG4 from Texas Instruments is a quad differential comparator, designed to operate from a single power supply over a wide range of voltages. This component consists of four independent voltage comparators, each capable of operating with high gain and fast response times. The LM2901DG4 is particularly useful in applications requiring multiple comparison functions within a single package, enhancing system efficiency and reducing component count.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 2V ~ 30V, ±1V ~ 15V | V |
| Operating Temperature | -40°C ~ 125°C | °C |
| Max Junction Temperature (Tj) | 125°C | °C |
| Input Offset Voltage (Vos) | 2mV | mV |
| Input Bias Current | -25nA | nA |
| Response Time | 1.3 μs | μs |
| Output Current per Channel | 16mA | mA |
| Max Supply Current | 500μA | μA |
| Package Type | 14-SOIC | |
| Number of Pins | 14 | |
| Output Type | Open-Collector, TTL |
Key Features
- High Gain and Fast Response: The LM2901DG4 features a PNP Darlington pair input, allowing for high gain and fast response times with minimal input bias current.
- Wide Operating Voltage Range: Operates from a single power supply over a wide range of voltages (2V ~ 30V, ±1V ~ 15V).
- Independent Comparators: Four independent voltage comparators, each with its own input and output, allowing for multiple comparison functions within a single package.
- Low Input Bias Current: Input bias current as low as -25nA, which is crucial for precise analog signal processing.
- Open-Collector Output: The output consists of an open-collector NPN transistor, which sinks current when the negative input voltage is higher than the positive input voltage.
- Compact Packaging: Available in a 14-SOIC package, making it suitable for space-constrained applications.
Applications
- Industrial Control Systems: Used in various industrial control systems where multiple comparison functions are required.
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range and robust design.
- Medical Devices: Can be used in medical devices that require precise voltage comparison and high reliability.
- Consumer Electronics: Found in consumer electronics such as audio equipment and other devices requiring multiple comparator functions.
- Automation and Robotics: Used in automation and robotics for sensor signal processing and control systems.
Q & A
- What is the operating supply voltage range of the LM2901DG4?
The LM2901DG4 operates from a single power supply over a wide range of voltages (2V ~ 30V, ±1V ~ 15V).
- What is the maximum junction temperature of the LM2901DG4?
The maximum junction temperature (Tj) is 125°C.
- What is the input offset voltage of the LM2901DG4?
The input offset voltage (Vos) is 2mV.
- What is the response time of the LM2901DG4?
The response time is 1.3 μs.
- What is the output current per channel of the LM2901DG4?
The output current per channel is 16mA.
- What is the package type of the LM2901DG4?
The LM2901DG4 is available in a 14-SOIC package.
- How many independent comparators does the LM2901DG4 have?
The LM2901DG4 has four independent voltage comparators.
- What is the typical application of the LM2901DG4 in industrial settings?
The LM2901DG4 is used in various industrial control systems where multiple comparison functions are required.
- What is the input bias current of the LM2901DG4?
The input bias current is as low as -25nA.
- Is the LM2901DG4 suitable for automotive applications?
Yes, the LM2901DG4 is suitable for automotive applications due to its wide operating temperature range and robust design.
