ADR291GRZ-REEL

Noise - 0.1Hz to 10Hz:	50µVp-p
Base Part Number:	ADR291
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Supply:	15µA
Voltage - Input:	3 V ~ 15 V
Noise - 10Hz to 10kHz:	--
Series:	XFET®
Temperature Coefficient:	30ppm/°C
Tolerance:	±0.24%
Current - Output:	5mA
Voltage - Output (Min/Fixed):	2.5V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADR291GRZ-REEL Application Field and Working Principle

PMIC Voltage References are linear voltage references that provide an output voltage, usually close to but slightly different from the value set by a resistor-divider network, over a specified temperature range. The part number of the featured PMIC Voltage Reference is the ADR291GRZ-REEL.

Application Fields

The ADR291GRZ-REEL can find its applications in multiple fields. In the world of optics and communications, this PMIC Voltage Reference has been used in optical transceivers, optical networking, and signal conditioning. Even in the medical field, this voltage reference can play a role in devices such as medical monitors, LED drivers, and oxygen therapy systems.In industrial and automotive applications, ADR291GRZ-REEL have been used in industrial automation, light control systems, and power supply designs, making them suitable for applications such as photovoltaic maximum power point trackers (MPPTs).Also, the ADR291GRZ-REEL can be used in white goods including air conditioning and refrigeration systems, and has even been employed in the manufacture of computer motherboards and various power supplies.

Working Principle

The ADR291GRZ-REEL utilizes a voltage controlled oscillator to generate an output reference voltage. An error amplifier amplifies any voltage difference between the output and a preset reference value. The output of the error amplifier is then fed into a current sink, which generates a correcting current to the voltage controlled oscillator. This process of feedback loop monitoring the output of the error amplifier and adjusting the current sink allows for a very precise and stable output reference voltage. PMIC Voltage References like the ADR291GRZ-REEL usually offer an output voltage between 0.45V to 6.6V, with an accuracy of ±0.3%. Temperature stability should also be considered when selecting a voltage reference, and the ADR291GRZ-REEL can offer a stability similar to that of a band-gap reference over temperatures ranging from -40°C to +125°C.The ADR291GRZ-REEL also features a wide input voltage range of 2.3V to 6.5V, and its power drain is typically 85µA over temperatures of -40°C to 85°C. The ADR291GRZ-REEL also offers a low noise, low drift, and a very low temperature coefficient which ranges from 2ppm/°C to 10ppm/°C, depending on the temperature range.

Final Remarks

The ADR291GRZ-REEL offers all the features one could expect from a precision, low-dropout PMIC Voltage Reference. It has a wide range of application fields and its wide input voltage range, low noise, low drift, and excellent temperature coefficient makes it an ideal choice for applications that require precise and stable output reference voltages.

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