VRE3025LS

Noise - 0.1Hz to 10Hz:	1.5µVp-p
Base Part Number:	VRE3025
Supplier Device Package:	8-SMT
Package / Case:	8-SMD, Flat Lead
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Supply:	4mA
Voltage - Input:	8 V ~ 36 V
Noise - 10Hz to 10kHz:	3µVrms
Series:	--
Temperature Coefficient:	2ppm/°C
Tolerance:	±0.02%
Current - Output:	15mA
Voltage - Output (Min/Fixed):	2.5V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tube

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Introduction

The VRE3025LS is a precision voltage reference that combines a linear regulator, low-noise amplifier, and precision temperature sensor in one small package. The VRE3025LS is a solid state regulator for battery operated consumer electronics, providing simple and accurate voltage regulation in the range from 3.3V to 5V. It is very simple to use, requiring only one external resistor to set the required output voltage. It has excellent noise characteristics and low current consumption.

VRE3025LS application field

The VRE3025LS is ideal for a variety of applications such as power supplies, battery-operated portable devices and cellular phones. It can be used to provide an adjustable, stable and accurate output voltage. It is suitable for powering small, low-power microprocessors in home and office systems, as well as automotive applications. The VRE3025LS is also an ideal replacement for traditional voltage references such as Zener diodes and precision references in applications requiring high accuracy and low cost.

VRE3025LS working principle

The VRE3025LS consists of three main components; a voltage reference, a low-noise amplifier, and a precision temperature sensor. The voltage reference output provides a stable and accurate voltage level over temperature. The low-noise amplifier provides linear regulation of the output voltage over a wide temperature range. The precision temperature sensor compensates for device variations from one package to the next and provides temperature compensation over a wide temperature range.The VRE3025LS voltage reference is biased by an external resistor. This resistor sets the output voltage of the voltage reference and can be adjusted to account for variations in battery voltage, load current, and other parameters. The low-noise amplifier amplifies the voltage reference output and then feeds it to a voltage divider which sets the output voltage. The voltages at the output of the voltage divider and the low-noise amplifier are then compared to the reference voltage at the input of the voltage reference. If the voltage at the output is lower than the reference voltage, the low-noise amplifier increases the gain and thus increases the output voltage. Similarly, if the output voltage is higher than the reference voltage, the low-noise amplifier decreases the gain and decreases the output voltage. The precision temperature sensor detects the temperature around the VRE3025LS and compensates for any fluctuations in the output voltage caused by changes in ambient temperature.

Conclusion

The VRE3025LS is an excellent voltage reference that combines linear regulation, low-noise performance, and temperature compensation all in one small package. It can be used in a variety of applications such as power supplies, battery operated portable devices, and automotive systems, providing adjustable, stable, and accurate output voltages on a wide temperature range.

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