Overview
The LM2903DR, produced by Texas Instruments, is a dual, micropower high-voltage open-drain comparator. It is part of the next-generation B-version comparators, which offer significant improvements over the previous models. These devices are designed to operate from a single power supply over a wide range of voltages and are known for their low power consumption and high reliability. The LM2903DR is a drop-in replacement for earlier versions such as the LM293, LM393, and LM2903, making it a versatile choice for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Rating | Up to 38 | V |
| ESD Rating (HBM) | 2k | V |
| Input Offset Voltage | ±0.37 | mV |
| Input Bias Current | 3.5 | nA |
| Supply Current | 200 | µA per comparator |
| Response Time | 1 | µs |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOIC (D) | |
| Number of Pins | 8 |
Key Features
- Maximum rating up to 38 V
- ESD rating (HBM): 2k V
- Low input offset voltage: ±0.37 mV
- Low input bias current: 3.5 nA
- Low supply current: 200 µA per comparator
- Faster response time of 1 µs
- Extended temperature range: -40°C to 125°C
- Common-mode input voltage range includes ground
- Differential input voltage range equal to maximum-rated supply voltage: ±38 V
- Low output saturation voltage
- Output compatible with TTL, MOS, and CMOS
Applications
The LM2903DR is suitable for a wide range of applications due to its high reliability, low power consumption, and robust specifications. It is commonly used in:
- Industrial control systems
- Automotive systems
- Medical devices
- Consumer electronics
- Power management systems
Q & A
- What is the maximum voltage rating for the LM2903DR?
The maximum voltage rating for the LM2903DR is up to 38 V. - What is the ESD rating for the LM2903DR?
The ESD rating for the LM2903DR is 2k V (HBM). - What is the typical input offset voltage for the LM2903DR?
The typical input offset voltage for the LM2903DR is ±0.37 mV. - What is the input bias current for the LM2903DR?
The input bias current for the LM2903DR is 3.5 nA. - What is the supply current per comparator for the LM2903DR?
The supply current per comparator for the LM2903DR is 200 µA. - What is the response time of the LM2903DR?
The response time of the LM2903DR is 1 µs. - What is the operating temperature range for the LM2903DR?
The operating temperature range for the LM2903DR is -40°C to 125°C. - Is the LM2903DR compatible with TTL, MOS, and CMOS outputs?
Yes, the LM2903DR is compatible with TTL, MOS, and CMOS outputs. - Can the LM2903DR be used as a drop-in replacement for earlier models?
Yes, the LM2903DR can be used as a drop-in replacement for earlier models such as the LM293, LM393, and LM2903. - What package types are available for the LM2903DR?
The LM2903DR is available in an SOIC (D) package with 8 pins.
