STMicroelectronics LM139ADT Low Power Quad Voltage Comparators
The LM139ADT from STMicroelectronics is a quad voltage comparator that is designed to operate over a wide range of voltages, from single +5V to dual ±15V power supply voltages. This high-performance product is tailored to meet the requirements for a variety of electronic applications, including industrial, automotive, and consumer markets.
Each of the four independent comparators is designed to operate with precision, offering a fast response time without consuming excessive power. This makes the LM139ADT an excellent choice for power-sensitive designs where efficiency is paramount. The device features low input bias current, low input offset current, and low offset voltage, which contributes to its high accuracy.
Key Features
- Wide single supply voltage range or dual supplies: +2V to +36V or ±1V to ±18V
- Very low supply current drain (0.8 mA) independent of supply voltage
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Low input offset voltage: ±1 mV
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the power supply voltage
- Low output saturation voltage: 250 mV at 4 mA
- Output compatible with TTL, DTL, ECL, MOS, and CMOS logic systems
The LM139ADT is capable of driving loads directly. With its low output saturation voltage, the device can switch to a low state efficiently, which is especially useful in digital logic circuits. The comparators' outputs are compatible with various logic systems, making them versatile for interfacing with other components in a circuit design.
STMicroelectronics has designed the LM139ADT to be robust, ensuring reliable performance in challenging conditions. It is also characterized for operation from -55°C to 125°C, which makes it suitable for use in extreme environments. Whether used in control systems, limit comparators, simple analog to digital converters, or any other application requiring a reliable comparison of voltages, the LM139ADT is a solid choice for designers looking for a dependable and efficient solution.
