ADR291GRZ

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The ADR291GRZ voltage reference is classified as a member of the PMIC (Power Management Integrated Circuit) family, dedicated to providing a low temperature coefficient voltage reference in a wide range of applications. Offered in the SC-70-5 package, this module is ideal for space-constrained applications like portable consumer electronics. It includes an integrated on-chip temperature sensor and a two-stage voltage reference design, which provides a very high level of accuracy and low noise over a wide temperature range.

The ADR291GRZ is most commonly used in battery-operated portable devices like cell phones, digital cameras and camcorders, personal digital assistants (PDAs), personal navigation devices, scan guns, and medical monitoring systems, providing a very low-cost, stable, accurate and low noise reference from a single IC. It is also ideal for other applications, such as automotive electronic systems, including GPS navigation systems and car audio, circuit protection for system designers, remote sensing, and analog-to-digital conversion.

The working principle behind the ADR291GRZ is simple and straightforward. It is a two-level voltage reference, which consists of a voltage-trimming device that is connected to a temperature-compensated voltage reference. The voltage reference provides a precise fixed output voltage regardless of temperature or power supply variations. The integrated temperature sensor compensates the voltage reference and thereby adjusts the reference voltage to the digital signals. This ensures that the reference voltage remains constant over a wide temperature range while digital signals are present. The device also includes two precision resistors which help to maintain high accuracy over a wide temperature range.

The working principle of the ADR291GRZ is also very energy efficient. The device consumes only 20 micro-amps at 3V, making it a low-cost and energy-efficient solution. Furthermore, its two-stage voltage reference design provides a very precise and low-noise reference, which meets the most demanding accuracy specifications for today\'s portable electronics. Furthermore, the module is designed to support the fast turn-on characteristics required for today\'s battery operated devices.

Overall, the ADR291GRZ is an ideal solution for those who are looking for a highly precise and stable voltage reference for multiple applications, such as portable consumer electronics, automotive electronics, navigation systems and different circuit protection applications. Its small package ensures that it fits into even the tightest designs and it\'s low-power consumption further contributes to the system\'s overall efficiency.

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