REF5040AIDGKR Integrated Circuits (ICs)

Noise - 0.1Hz to 10Hz:	3µVp-p
Base Part Number:	REF5040
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Supply:	1.2mA
Voltage - Input:	4.296 V ~ 18 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	8ppm/°C
Tolerance:	±0.1%
Current - Output:	10mA
Voltage - Output (Min/Fixed):	4.096V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tape & Reel (TR)

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REF5040AIDGKR PMIC - Voltage Reference Application Field & Working Principle

In recent years, power management integrated circuit (PMIC) solutions have become increasingly important to industry. With the rapid development of semiconductor technologies, power consuming devices are demanding greater performance from their power supplies, leading to an increase in the number of different power requirements for industrial, consumer and communication products. This is driving growth in the PMIC industry and the need for PMIC designs to become more flexible.One necessary component in a PMIC design is a voltage reference. Voltage references are used to establish a stable reference voltage within a circuit. This voltage reference is used to determine the level of other voltages in the circuit, and provides a baseline which helps reduce potential fluctuations in circuit parameters. Voltage references come in a variety of different formats, but one of the most popular is the REF5040AIDGKR.The REF5040AIDGKR is an ultra-low-noise voltage reference device used for providing high-accuracy, low-noise and low-power voltage regulation and measurement. It is the preferred voltage reference for voltage regulator circuits, input and output circuits, and well-matched analog circuit applications. The REF5040AIDGKR has a wide operating temperature range of -55°C to +125°C, and is available in several voltage versions -- such as 2.5V and 4V options -- to meet the needs of different application environments.The working principle of the REF5040AIDGKR is based on its Zener diode structure. It contains a Zener diode, which is biased in its linear region, and two transistors -- a PNP and an NPN -- which form a current mirror. The Zener diode is a bidirectional device that functions as a voltage reference. Its output voltage is determined by its breakdown voltage, which is set using an external resistor. The current through the Zener diode is stabilized by the current mirror, providing a stable reference voltage, even in noisy and fluctuating supply voltage conditions.In addition to its Zener diode structure, the REF5040AIDGKR has a built-in temperature compensation circuit, which ensures excellent thermal stability. This makes the REF5040AIDGKR ideal for use in temperature-sensitive applications, such as medical devices and communication systems. The device also has a low-power shutdown mode, which can be activated when the device is not in use. This makes the device very energy efficient, and helps to reduce total system power consumption.Overall, the REF5040AIDGKR is a highly reliable, low-noise, low-power and high-accuracy voltage reference device. It is designed to meet the demanding needs of a wide range of industrial, consumer, and communication applications. Its Zener diode structure provides excellent thermal stability and its low-power shutdown mode ensures efficient energy use, making it an ideal choice for PMIC design solutions.

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