REF102AP

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REF102AP is a voltage reference product within the Power Management IC (PMIC) family. It is designed to offer a precision voltage reference in a tiny, low-power package and to provide a reliable, stable reference voltage for a variety of functions. This article will explore the application fields for and working principle of this voltage reference.

Application Field

REF102AP is suitable for use in multiple application fields that require accurate voltage reference. Some of the most common application fields include analog to digital converters (ADCs) and digital to analog converters (DACs). It can also be used for power system diagnostics, battery monitor circuits, switching regulator feedback circuits and constant current source circuitry. It has also been used in various automotive applications, including onboard voltage sensing and temperature sensing. Additionally, it has been employed in measuring applications, such as stable oscillators, oscilloscope vertical amplifiers, and relative loop readjustment functions. In all these applications, the REF102AP can accommodate a voltage reference of 12, 15, 22, 25, 27 and 28V.

Working Principle

REF102AP is a low power voltage reference that consists of a monolithic temperature compensated bandgap (TCBG) voltage reference circuit. This reference circuit is designed to accurately regulate a constant reference voltage at a specified temperature range. The main function of TCBG voltage reference is to provide a voltage reference source for the comparator. The input voltages of the comparator are rectified, approximated and conditioned through a series of resistors and transistors. A control circuit is used to control the voltage to precisely ensure the accuracy voltage within the given temperature range. A regulated output voltage is then produced from the circuit by regulating the drain of the “last transistor”.

The REF102AP also includes several other features, such as a temperature sensor, an ultra-low-noise voltage reference amplifier, and an adjustable output voltage range. The temperature sensor can be used to monitor the temperature of the on-board environment. The adjustable output voltage range can be easily set with an active load, allowing the user to customize the voltage output of the device. The ultra-low-noise voltage reference amplifier improves the accuracy and stability of the output voltage.

Conclusion

To summarize, the REF102AP is a very versatile voltage reference product within the Power Management IC (PMIC) family. It is suitable for a wide range of applications which require accurate voltage reference. The main component of this device is a monolithic temperature compensated bandgap (TCBG) voltage reference circuit. It also includes a temperature sensor, an ultra-low-noise voltage reference amplifier and an adjustable output voltage range for further precision. As such, REF102AP is an excellent device for applications that demand reliable and stable voltage reference.

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