Overview
The LM2903DR2 is a dual independent precision voltage comparator produced by onsemi. It is part of the LM393 series, known for its wide range of supply voltage operation and high precision. These devices are designed to operate from a single power supply over a wide range of voltages, from 2.0 Vdc to 36 Vdc, and also support split-supply operation from +/-1.0 Vdc to +/-18 Vdc. The LM2903DR2 is particularly noted for its low input offset voltage, low input bias current, and low supply current, making it an excellent choice for various applications in consumer, automotive, and industrial electronics.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range (Single Supply) | 2.0 Vdc to 36 Vdc |
| Supply Voltage Range (Split Supply) | +/-1.0 Vdc to +/-18 Vdc |
| Input Offset Voltage | 2.0 mV (max) for LM393A, 5.0 mV (max) for LM293/393 |
| Input Bias Current | 25 nA |
| Input Offset Current | 5.0 nA |
| Quiescent Current | 0.4 mA |
| Output Voltage Compatibility | DTL, ECL, TTL, MOS, and CMOS Logic Levels |
| Operating Temperature Range | -40°C to 105°C |
| Package Type | SOIC-8 |
| ESD Rating (HBM) | 2k V |
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
- Low input bias current and low input offset current
- 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
- Faster response time of 1 µsec and low output saturation voltage
Applications
The LM2903DR2 is versatile and can be used in a variety of applications, including consumer electronics, automotive systems, and industrial control systems. Its low input offset voltage and low supply current make it suitable for precision voltage comparison tasks. It is also used in circuits that require compatibility with multiple logic levels such as DTL, ECL, TTL, MOS, and CMOS.
Q & A
- What is the supply voltage range for the LM2903DR2?
The LM2903DR2 can operate from a single supply voltage range of 2.0 Vdc to 36 Vdc and a split-supply range of +/-1.0 Vdc to +/-18 Vdc. - What is the input offset voltage of the LM2903DR2?
The input offset voltage is as low as 2.0 mV (max) for LM393A and 5.0 mV (max) for LM293/393. - What is the quiescent current of the LM2903DR2?
The quiescent current is 0.4 mA, which is independent of the supply voltage. - What are the operating temperature ranges for the LM2903DR2?
The operating temperature range is -40°C to 105°C. - Is the LM2903DR2 compatible with multiple logic levels?
Yes, the output voltage is compatible with DTL, ECL, TTL, MOS, and CMOS logic levels. - What is the ESD rating of the LM2903DR2?
The ESD rating is 2k V (HBM). - What package types are available for the LM2903DR2?
The LM2903DR2 is available in SOIC-8 packages. - What are some common applications of the LM2903DR2?
Common applications include consumer electronics, automotive systems, and industrial control systems. - Does the LM2903DR2 have ESD protection?
Yes, the device includes ESD clamps on the inputs to increase ruggedness without affecting performance. - How fast is the response time of the LM2903DR2?
The response time is as fast as 1 µsec.
