LP339N/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Linear - Comparators encompass electronic components or ICs designed to compare two input voltages and determine which is greater. The LP339N/NOPB, for instance, is a comparator IC that is voltage-mode and is based on the CMOS technology. It is part of the LP33xx family from Texas Instruments and is popularly and commonly used in several applications.

Applications of LP339N/NOPB

The LP339N/NOPB is used in a variety of applications, including for monitoring and measurement systems, for timing and counting, for logic gating, for level shifting, in peak detection circuits, for frequency detection and for transducer interfacing applications. Moreover, it has been used in zero-crossing detectors and for one-shot driving applications with its fast response.
This comparator IC also finds extensive use in consumer electronics as well, especially since its long package is an ideal fit for battery-powered consumer devices such as MP3 players, portable media players and more. Also, this IC is used in several automotive applications, including in brake light switches and in vehicle security systems to detect capacitance levels as well as for sensing ranges. In many of these applications, the comparator works with, or as circuitry for, other ICs, such as the LM358, which is a dual operational amplifier based on the same CMOS technology.

Working Principle of LP339N/NOPB

The LP339N/NOPB is a dual comparator circuit that contains two comparators in a single IC package. The inputs of each comparator are two independent input pins, namely VᵢN and VᵢP, where VᵢN is the negative voltage reference and VᵢP is the positive reference. The output of the comparation is an active-high (or active-low when programmed) signal that indicates which reference voltage is greater; VᵢN or VᵢP. This is typically used to detect which of the two reference voltages has exceeded the predetermined set threshold in which case the comparator produces a logic ‘1’ output.
The LP339N/NOPB also has three additional pins, namely the Open-Collector Output Enable pin (OCE), the Output Enable pin (OE) and the VEE Supply pin. The OCE is used to enable the comparator output in open-drain configurations, while the OE pin is used to enable the comparator’s output in push-pull configurations. Finally, the VEE pin is used to power the comparator and its amplifier steps.

Conclusion

The LP339N/NOPB is a popular voltage-mode comparator IC based on the CMOS technology. It is extensively used in a variety of applications, such as for timing and counting, for logic gating, for level shifting, and in peak detection circuits. It is also used in several consumer electronics and automotive applications and it typically works in conjunction with other ICs such as the LM358 from TI. Its operation is relatively straightforward; it compares the two reference voltages and produces an active-high (or active-low if programmed) logic output, indicating which voltage is greater. It also has three additional pins for powering and enabling the comparator.

The specific data is subject to PDF, and the above content is for reference