Overview
The LM2903PWRG4 is a dual voltage comparator from Texas Instruments, part of the next-generation B-version comparator family. This device is an enhanced version of the industry-standard LM2903 comparator, offering improved specifications and performance. The LM2903B is designed to operate from a single power supply over a wide range of voltages and features lower offset voltage, higher supply voltage capability, lower supply current, and lower input bias current compared to its predecessors. It also includes improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Offset Voltage (VIO) | -2.5 | ±0.37 | 2.5 | mV |
| Input Bias Current (IB) | -3.5 | -25 | -50 | nA |
| Supply Current (ICC) | 0.6 | 1 | 2.5 | mA |
| Response Time | 1 | µs | ||
| Common Mode Input Voltage Range (VCM) | 0 | VCC - 1.5 | V | |
| Operating Temperature Range | -40 | 125 | °C | |
| ESD Rating (HBM) | 2000 | V | ||
| Supply Voltage Range | 3 | 36 | V |
Key Features
- Improved specifications of B-version, including lower offset voltage and higher supply voltage capability.
- 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 µsec.
- Extended temperature range: -40°C to 125°C.
- Available in various packages, including tiny 2 x 2mm WSON package.
- B-version is a drop-in replacement for LM293, LM393, and LM2903 A and V versions.
- 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.
- Improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps.
Applications
The LM2903PWRG4 is versatile and can be used in a variety of applications, including:
- Threshold detection and limit comparison.
- Analog-to-digital conversion.
- Zero-crossing detectors.
- Relay drivers and level translators.
- Line receivers and line drivers.
- Power supply monitoring and control.
Q & A
- What is the input offset voltage of the LM2903PWRG4?
The input offset voltage of the LM2903PWRG4 is typically ±0.37 mV, with a maximum of ±2.5 mV over the specified temperature range.
- What is the operating temperature range of the LM2903PWRG4?
The operating temperature range of the LM2903PWRG4 is -40°C to 125°C.
- What is the ESD rating of the LM2903PWRG4?
The ESD rating of the LM2903PWRG4 is 2000 V (HBM).
- What is the supply current of the LM2903PWRG4?
The supply current of the LM2903PWRG4 is typically 1 mA, with a maximum of 2.5 mA over the specified supply voltage range.
- What is the response time of the LM2903PWRG4?
The response time of the LM2903PWRG4 is typically 1 µsec.
- Is the LM2903PWRG4 compatible with TTL, MOS, and CMOS outputs?
- What are the common-mode input voltage range and differential input voltage range of the LM2903PWRG4?
The common-mode input voltage range includes ground and goes up to VCC - 1.5 V. The differential input voltage range is equal to the maximum-rated supply voltage, ±38 V.
- Can the LM2903PWRG4 be used as a drop-in replacement for other comparator models?
- What are some typical applications of the LM2903PWRG4?
- What packages are available for the LM2903PWRG4?
- How does the LM2903PWRG4 improve upon previous versions of the LM2903?
