Overview
The LM2903DG is a dual independent precision voltage comparator produced by onsemi. It is part of the LM393 series, which is designed for single or split supply operation. This device is notable for its low input offset voltage, making it suitable for various applications in consumer, automotive, and industrial electronics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Voltage (VCC) | +2 | +36 or ±18 | V | |
| Input Differential Voltage (VIDR) | 36 | V | ||
| Input Common Mode Voltage Range (VICR) | -0.3 | +36 | V | |
| Output Voltage (VO) | 36 | V | ||
| Output Short Circuit-to-Ground Current (ISC) | 20 | mA | ||
| Supply Current (ICC) | 0.4 | 1 | 2.5 | mA |
| Input Offset Voltage (Vio) | 1 | 7 | 15 | mV |
| Input Offset Current (Iio) | 5 | 50 | 150 | nA |
| Input Bias Current (Iib) | 25 | 250 | 400 | nA |
| Operating Ambient Temperature Range (TA) | -40 | +105 | °C | |
| Maximum Operating Junction Temperature (TJ) | 150 | °C |
Key Features
- Wide single supply voltage range: 2.0 Vdc to 36 Vdc or split supply range: ±1.0 Vdc to ±18 Vdc.
- Very low supply current: 0.4 mA independent of supply voltage.
- Low input bias current: 25 nA and low input offset current: ±5 nA.
- Low input offset voltage: up to 5.0 mV.
- Input common mode voltage range includes negative rail.
- Differential input voltage range equal to the 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.
- AEC-Q100 qualified and PPAP capable for automotive applications.
Applications
The LM2903DG is versatile and can be used in a variety of applications, including:
- Consumer electronics: For precision voltage comparison and signal conditioning.
- Automotive electronics: Qualified under AEC-Q100 standards, making it suitable for automotive systems.
- Industrial electronics: For applications requiring high precision and reliability.
- Signal conditioning and amplification: Can be used in circuits requiring low offset voltage and high gain.
- Transducer amplifiers and voltage regulators: Due to its wide input common mode range and compatibility with various logic levels.
Q & A
- What is the operating supply voltage range of the LM2903DG?
The LM2903DG operates over a wide single supply voltage range of 2.0 Vdc to 36 Vdc or split supply range of ±1.0 Vdc to ±18 Vdc. - What is the typical supply current of the LM2903DG?
The typical supply current is 0.4 mA, independent of the supply voltage. - What is the input offset voltage of the LM2903DG?
The input offset voltage is up to 5.0 mV. - Is the LM2903DG compatible with various logic levels?
Yes, it is compatible with DTL, ECL, TTL, MOS, and CMOS logic levels. - What is the maximum operating junction temperature of the LM2903DG?
The maximum operating junction temperature is 150°C. - Is the LM2903DG qualified for automotive use?
Yes, it is AEC-Q100 qualified and PPAP capable. - What is the input common mode voltage range of the LM2903DG?
The input common mode voltage range includes the negative rail and extends up to VCC - 1.5 V. - What is the differential input voltage range of the LM2903DG?
The differential input voltage range is equal to the supply voltage. - Does the LM2903DG have ESD protection?
Yes, it has ESD clamps on the inputs to increase ruggedness without affecting performance. - What are the typical applications of the LM2903DG?
It is used in consumer, automotive, and industrial electronics for precision voltage comparison and signal conditioning.
