ZXRE1004CFTA Integrated Circuits (ICs)

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A voltage reference is a common PMIC, a type of integrated circuit responsible for managing power in semiconductor environments. The ZXRE1004CFTA is a three-terminal voltage reference specifically designed to deliver stable voltage references spanning a wide range of applications. In this article we will explore the application field of the ZXRE1004CFTA and its working principles.

Description and Features

The ZXRE1004CFTA is a low-power voltage reference, providing a reference output voltage of 4.096V with a 0.4% initial accuracy over a wide temperature range of -45°C to +125°C. This precision voltage reference is offered in an 8-lead SOIC package and is suitable for automated SMT assembly processes. Due to its low operating current of 3.2mA and low quiescent current of 5μA it is also an especially energy efficient solution. The device ensures a quick start-up time of 2ms as well as excellent line and load regulation.

Applications

The ZXRE1004CFTA is particularly suited for use in professional grade test and measurement instruments including signal processing and analog-to-digital converters. It can be used in any general purpose load, battery-operated applications such as portable instrumentation, or any harsh operating environment such as automotive or industrial applications. Additionally, the ZXRE1004CFTA is also suitable for precision DAC circuits, digital potentiometers, signal conditioning, and medical instrumentation.

Working Principle

When it comes to voltage reference circuits, the goal is to masterfully design the reference circuit so that it is both reliable and accurately stable. The ZXRE1004CFTA specifically utilizes a low-noise bandgap voltage reference, which is a type of voltage reference circuit that achieves such reliability and accuracy. A band-gap voltage reference is based on the principle of temperature-independent operation, an extremely important factor for applications such as digital-analog converters or when measuring voltages with a multimeter. The bandgap technique allows for a custom-tailored reference voltage regardless of temperature over a wide temperature range. This is due to the fact that the bandgap reference voltage is dependent on a diode connected transistor and the bipolar transistor current mirror. The voltage between these two transistors is then simulated by the bandgap variations and the mirrored current. The circuit creates the reference voltage through a combination of the temperature dependent currents, their respective compensation currents, and a reference diode.

Conclusion

The ZXRE1004CFTA is a precision voltage reference with superior accuracy and wide temperature range operation. It is highly suitable for applications that require reliable and stable voltage references such as digital-analog converters and medical instrumentation. It functions off a low operating current of 3.2mA and low quiescent current of 5μA, allowing for excellent energy efficiency. Its working principle revolves around a low-noise bandgap voltage reference, which produces a custom-tailored voltage reference despite shifting temperatures. Ultimately, the ZXRE1004CFTA is a logical choice for precision voltage markets seeking reliable, accurate, and cost effective solutions.

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