Overview
The LM2903DRG3, produced by Texas Instruments, is a dual, micropower, high-voltage open-drain comparator. This component is part of the LM2903 series, known for its upgraded rail-to-rail capabilities, wider voltage range, and improved power consumption. The LM2903DRG3 is designed to operate over a broad range of supply voltages and is suitable for various high-voltage applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Offset Voltage (VIO) | VS = 5 to 36V | -2.5 | ±0.37 | 2.5 | mV |
| Input Bias Current (IB) | - | -3.5 | -25 | -50 | nA |
| Input Offset Current (IOS) | - | -10 | ±0.5 | 10 | nA |
| Common-Mode Voltage Range (VCM) | 25°C | - | 150 to 400 | 700 | mV |
| Low-Level Output Current (IOL) | VOL = 1.5 V, VID = -1 V | - | 6 | - | mA |
| Supply Current (ICC) | VCC = 5 V, RL = ∞ | - | 0.8 to 1 | 2.5 | mA |
| Response Time | RL connected to 5 V through 5.1 kΩ, CL = 15 pF | - | 1.3 | - | µs |
Key Features
- Dual, micropower, high-voltage open-drain comparators
- Operates over a wide supply voltage range (up to 36V for non-V devices and up to 32V for V-suffix devices)
- Improved specifications with B-version devices, including higher ESD rating (2kV HBM)
- Low input bias and offset currents
- High common-mode voltage range
- Fast response time with low overdrive
Applications
The LM2903DRG3 is versatile and can be used in a variety of applications, including:
- High-voltage sensing and monitoring
- Power supply monitoring and control
- Industrial control systems
- Automotive systems requiring high reliability and wide voltage range
- Medical devices where low power consumption and high accuracy are crucial
Q & A
- What is the maximum supply voltage for the LM2903DRG3?
The maximum supply voltage for the LM2903DRG3 is up to 36V for non-V devices and up to 32V for V-suffix devices. - What is the input offset voltage range for the LM2903DRG3?
The input offset voltage range is typically ±0.37 mV, with a maximum of 2.5 mV over the specified temperature range. - What is the response time of the LM2903DRG3?
The response time is typically 1.3 µs for a 100-mV input step with 5-mV overdrive. - What is the common-mode voltage range for the LM2903DRG3?
The common-mode voltage range is up to 700 mV, with typical values between 150 to 400 mV at 25°C. - Is the LM2903DRG3 suitable for high-voltage applications?
Yes, the LM2903DRG3 is designed for high-voltage applications and can operate over a wide supply voltage range. - What are the typical applications of the LM2903DRG3?
The LM2903DRG3 is used in high-voltage sensing, power supply monitoring, industrial control systems, automotive systems, and medical devices. - What is the input bias current of the LM2903DRG3?
The input bias current is typically -25 nA, with a maximum of -50 nA over the specified temperature range. - Does the LM2903DRG3 have any special packaging options?
The LM2903DRG3 is available in various packages, including the DRG3 package, which is a SOIC-8 package. - What is the ESD rating of the LM2903DRG3?
The ESD rating for the B-version devices is 2kV HBM. - How does the LM2903DRG3 handle low power consumption?
The LM2903DRG3 is designed as a micropower device, with a supply current typically around 0.8 to 1 mA at VCC = 5 V.
