ADR5045AKSZ-REEL

PMIC - Voltage Reference Application Field and Working Principle

Introduction

The ADR5045AKSZ-REEL is a family of voltage references voltage references developed by Analog Devices. The device is available in a 4mm × 3mm−10-connector surface mount package and can provide a variety of voltage options. The reference voltage is more accurate, characterized by low temperature drift, low voltage noise, low power consumption and high accuracy, making it an ideal solution for industry applications in both cost and performance terms. This article will discuss the application field and working principle of these ADR5045AKSZ-REEL voltage reference products.

Application Field

The ADR5045AKSZ-REEL voltage reference is widely used manufactured in a vast range of industry applications, especially in low-power, low-noise and high-accuracy applications. These applications include but are not limited to:

• GPS and navigation systems.
• Battery backed-up systems.
• Back-lighting control.
• Over voltage protection systems.
• Digital-to-analog converters.
• Power supply monitoring.

Its wide range of applications makes it a popular choice for many manufacturers and its low power consumption,high accuracy and low noise make it an ideal solution for both cost and performance terms.

Working Principle

The ADR5045AKSZ-REEL voltage feature guarantees a constant output voltage and precise control over wide range of operating conditions, showing excellent performance and stability over a wide temperature range. The device utilizes a four-terminal bandgap circuit to provide a precise voltaGＥreference voltage.

The four-terminal bandgap circuit consists of two resistors, one N-channel MOSFET and one P-channel MOSFET. The operation of the circuit is based on the fact that the N-channel MOSFET and the P-channel MOSFET have different areas, thus forming an offset voltage. By connecting an N-channel MOSFET and a P-channel MOSFET in series to each other and connecting a resistor to each of their gates, the offset voltage is then amplified. This amplified offset voltage is the reference voltage. This reference voltage is then compared to a control voltage to generate the output voltage of the device.

Conclusion

The ADR5045AKSZ-REEL voltage reference is a versatile solution for many industry applications. It offers outstanding performance, stability and accuracy and can be used in a variety of applications, from GPS navigation to over voltage protection systems. Its working principle is based on the four-terminal bandgap circuit and its power consumption is low, making it a perfect choice for many applications.