Overview
The LM2903NG, produced by onsemi, is a dual independent precision voltage comparator. This device is part of the LM2903 series, which includes several variants such as the LM2903, LM2903E, and LM2903V. The LM2903NG is designed for single or split supply operation, making it versatile for various applications in consumer, automotive, and industrial electronics. It features low input offset voltage, low current drain, and compatibility with multiple logic levels, making it an excellent choice for precision voltage comparison tasks.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Power Supply Voltage | VCC | +36 or ±18 | V |
| Input Differential Voltage | VIDR | 36 | V |
| Input Common Mode Voltage Range | VICR | −0.3 to +36 | V |
| Output Voltage | VO | 36 | V |
| Output Short Circuit-to-Ground Output Sink Current | ISC | 20 | mA |
| Operating Ambient Temperature Range | TA | −40 to +105 | °C |
| Maximum Operating Junction Temperature | TJ(max) | 150 | °C |
| Input Offset Voltage | VIO | ±2.0 to ±7.0 | mV |
| Input Offset Current | IIO | ±5.0 to ±50 | nA |
| Input Bias Current | IIB | 20 to 250 | nA |
| Supply Current | ICC | 0.4 to 1.0 | mA |
Key Features
- Wide single-supply range: 2.0 Vdc to 36 Vdc and split-supply range: ±1.0 Vdc to ±18 Vdc.
- Very low current drain independent of supply voltage: 0.4 mA.
- Low input bias current: 25 nA and low input offset current: 5.0 nA.
- Low input offset voltage: 5.0 mV (max).
- Input common mode range to ground level and differential input voltage range equal to power supply voltage.
- Output voltage compatible with DTL, ECL, TTL, MOS, and CMOS logic levels.
- ESD clamps on the inputs increase the ruggedness of the device without affecting performance.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
The LM2903NG is suitable for a wide range of applications, including consumer electronics, automotive systems, and industrial electronics. Its high gain and wide bandwidth characteristics make it ideal for use in circuits requiring precise voltage comparison, such as in zero-crossing detectors, window comparators, and in circuits that require high input impedance and low offset voltage.
Q & A
- What is the power supply voltage range for the LM2903NG?
The LM2903NG can operate with a single supply voltage from 2.0 Vdc to 36 Vdc or with a split supply voltage from ±1.0 Vdc to ±18 Vdc. - What is the input offset voltage of the LM2903NG?
The input offset voltage of the LM2903NG is typically ±2.0 mV to ±7.0 mV. - What is the maximum operating junction temperature for the LM2903NG?
The maximum operating junction temperature for the LM2903NG is 150°C. - Is the LM2903NG RoHS compliant?
Yes, the LM2903NG is Pb-free, halogen-free/BFR-free, and RoHS compliant. - What are the typical applications of the LM2903NG?
The LM2903NG is used in consumer electronics, automotive systems, and industrial electronics for precise voltage comparison tasks. - What is the input bias current of the LM2903NG?
The input bias current of the LM2903NG is typically 20 nA to 250 nA. - Can the LM2903NG handle high ESD levels?
Yes, the LM2903NG has ESD clamps on the inputs to increase its ruggedness without affecting performance. - What is the output sink current capability of the LM2903NG?
The output sink current capability of the LM2903NG is up to 20 mA. - Is the LM2903NG suitable for automotive applications?
Yes, the LM2903NG, especially the NCV2903 variant, is qualified for automotive use and is AEC-Q100 qualified and PPAP capable. - What are the package options available for the LM2903NG?
The LM2903NG is available in PDIP-8, SOIC-8, and Micro8 packages.
