Overview
The LM2903DE4 is a dual differential comparator produced by Texas Instruments. It is part of the LM2903 series, known for its high performance and versatility in various analog and digital applications. This component is designed to operate over a wide range of supply voltages and temperatures, making it suitable for a broad spectrum of electronic systems.
The LM2903DE4 features two independent comparators in a single package, each capable of comparing two analog input voltages and producing a digital output based on the comparison. This device is particularly useful in applications requiring precise voltage comparisons and fast response times.
Key Specifications
| Parameter | Test Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Supply Voltage Range | 2 V | 36 V | V | ||
| Operating Temperature Range | -40°C | 125°C | °C | ||
| Input Offset Voltage | VCC = 5 V to 36 V, TA = 25°C | ±0.37 mV | -2.5 mV | 2.5 mV | mV |
| Input Bias Current | VCC = 5 V, TA = 25°C | -25 nA | -50 nA | nA | |
| Input Offset Current | VCC = 5 V, TA = 25°C | ±0.5 nA | -10 nA | 10 nA | nA |
| Common Mode Range | VCC = 3 V to 36 V | 0 V | VCC - 2 V | V | |
| Response Time | RL connected to 5 V through 5.1 kΩ, CL = 15 pF | 1.3 µs | µs | ||
| Low-Level Output Voltage | IOL = 4 mA, VID = -1 V | 700 mV | mV | ||
| Low-Level Output Current | VOL = 1.5 V, VID = -1 V | 6 mA | mA | ||
| Supply Current | RL = ∞, VCC = 5 V | 0.8 mA | 1 mA | mA |
Key Features
- Dual Differential Comparators: The LM2903DE4 contains two independent differential comparators in a single package.
- Wide Supply Voltage Range: Operates from 2 V to 36 V, making it versatile for various power supply conditions.
- High Temperature Range: Characterized for operation from -40°C to 125°C, suitable for harsh environments.
- Low Input Offset Voltage: Typical input offset voltage of ±0.37 mV, ensuring high accuracy in voltage comparisons.
- Fast Response Time: Response time of 1.3 µs with a 100-mV input step and 5-mV overdrive.
- Open-Collector Outputs: Allows for wired-AND relationships when connected to other open-collector outputs.
- Low Supply Current: Typical supply current of 0.8 mA at 5 V supply voltage.
Applications
- Voltage Monitoring and Detection: Used in systems that require monitoring and detection of voltage levels.
- Analog-to-Digital Conversion: Can be part of analog-to-digital converter circuits.
- Threshold Detection: Suitable for applications requiring threshold detection, such as in alarm systems or control circuits.
- Automotive Systems: Given its wide temperature range, it is suitable for use in automotive electronics.
- Industrial Control Systems: Used in various industrial control applications where precise voltage comparisons are necessary.
Q & A
- What is the supply voltage range of the LM2903DE4?
The LM2903DE4 operates from 2 V to 36 V.
- What is the operating temperature range of the LM2903DE4?
The device is characterized for operation from -40°C to 125°C.
- What is the typical input offset voltage of the LM2903DE4?
The typical input offset voltage is ±0.37 mV.
- How fast is the response time of the LM2903DE4?
The response time is typically 1.3 µs with a 100-mV input step and 5-mV overdrive.
- What is the output configuration of the LM2903DE4?
The outputs are open-collector, allowing for wired-AND relationships.
- What is the typical supply current of the LM2903DE4 at 5 V supply voltage?
The typical supply current is 0.8 mA.
- Can the LM2903DE4 be used in automotive systems?
Yes, it is suitable for use in automotive electronics due to its wide temperature range.
- What package types are available for the LM2903DE4?
The LM2903DE4 is available in SOIC and VSSOP packages.
- Is the LM2903DE4 RoHS compliant?
Yes, the LM2903DE4 is RoHS compliant.
- What are some common applications of the LM2903DE4?
Common applications include voltage monitoring, analog-to-digital conversion, threshold detection, and industrial control systems.
