REF3125AQDBZRQ1 Integrated Circuits (ICs)

PMIC - Voltage Reference

A voltage reference is a source of a fixed (i.e. non-varying) voltage. It is used as a reference for other circuits to compare with. The output of this reference is usually independent of temperature, power supply voltage, or other varying conditions. One particular type of voltage reference is the REF3125AQDBZRQ1.

REF3125AQDBZRQ1 Application Field

REF3125AQDBZRQ1 is a high-accuracy, low-noise voltage reference. It is ideal for a variety of applications that need precise, stable and adjustable voltage. It can be used in settings like medical instrumentation, monitoring systems, voltage regulation, battery cell maintenance and more. It’s highly configurable, with precise attenuation settings that can be set to great detail depending on the application.

REF3125 Working Principle

REF3125AQDBZRQ1 operates by setting a precise, stable voltage that is independent of temperature, power supply voltage, or other varying conditions. It has a reference input connected to a precision bandgap reference circuit that adjusts the reference voltage to a fixed setpoint. This reference can be adjusted by voltage or current inputs. The output of the reference is comparable to the input voltage independent of accuracy and stability. This reference is buffered to isolate it from noise and other disturbances, with various optional settings for the buffering circuit.

Precision and Performance of REF3125

REF3125AQDBZRQ1 has dual current sources with excellent accuracy and excellent precision. This makes it ideal for precision circuits, as the output can be adjusted to an extremely accurate voltage. Noise on the output is exceptionally low, with a maximum noise of 1.5µVrms. This allows for excellent precision, making it an ideal choice for medical instrumentation and more.

Conclusion

REF3125AQDBZRQ1 is a high-accuracy, low-noise voltage reference ideal for precision circuits and applications. It has a precise, stable output while remaining unaffected by changes in temperature, power supply voltage, or other varying conditions. It has excellent accuracy and precision despite its small size, making it an ideal choice for various applications.