ADR291ERZ Integrated Circuits (ICs)

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

PMIC (Power Management IC) is related to the management of the electric power supply and operation control in a circuit. Voltage reference is one aspect of PMIC, which refers to the circuit component that produces a specific stable reference voltage for comparison and regulation of the power supply circuit. ADR291ERZ is a voltage reference of voltage and temperature tracked precision references from Analog Devices Corporation. It provides highly accurate and low temperature coefficient outputs, making it suitable for use in a wide variety of applications.

Overview

The ADR291ERZ is a three-terminal integrated circuit in an 8-lead SOIC package and is available in the extended commercial temperature range of -40 °C to +125 °C. It provides an output voltage of 4.096V and is optimized for use in both dc and ac systems. The ADR291ERZ reference voltage accuracy is 0.04% with a temperature coefficient of 8 ppm/°C. It features low temperature stability, low power consumption, low noise, and a better long-term stability than conventional designs.

Application Field

The ADR291ERZ can be used in a variety of applications, such as digital-to-analog convertors, automotive systems, data acquisition systems, precision measurement circuits, voltage references and burn-in systems. It is also suitable for precision regulator designs and voltage dividers. The ADR291ERZ can also be used in low-noise and low-dropout application, such as medical device and instrumentalation because of the excellent temperature stability.

Working Principle

The ADR291ERZ works on the principle of a three-terminal voltage regulator. It consists of an active element, a resistor, and a Zener diode connected in series between the input and output terminals. It is designed to maintain a constant output voltage that is independent of the input voltage, temperature and load current. The working of the ADR291ERZ can be explained further with the help of a block diagram.

The output voltage is set by the resistor and the Zener diode. Any change in input voltage will cause a change in output voltage. This is corrected by the active element, which senses the change in output voltage and adjusts itself to make the output voltage constant. This active element is the key component of the ADR291ERZ and its working is based on the principle of negative feedback. The ADR291ERZ incorporate temperature compensation techniques that sense the temperature and compensate the output voltage to make it independent of the temperature.

Conclusion

The ADR291ERZ is a three-terminal integrated circuit with excellent accuracy, temperature stability and low power consumption. It can be used in a variety of applications, such as digital-to-analog conversion, automotive systems, data acquisition systems, precision measurement circuits, voltage references and burn-in systems. It works on the principle of a negative feedback loop which senses any change in the input voltage and adjusts the output voltage to make it constant. The ADR291ERZ has good temperature compensation techniques that make the output voltage independent of temperature.

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