ADR444BRZ

Temperature Coefficient:	3ppm/°C
Base Part Number:	ADR444
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:	3.75mA
Voltage - Input:	4.6 V ~ 18 V
Noise - 10Hz to 10kHz:	--
Noise - 0.1Hz to 10Hz:	1.8µVp-p
Series:	XFET®
Tolerance:	±0.04%
Current - Output:	10mA
Voltage - Output (Min/Fixed):	4.096V
Output Type:	Fixed
Reference Type:	Series
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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Introduction:

ADR444BRZ is a voltage reference product series manufactured by ADI (Analog Devices). It provides excellent accuracy and stability over the full temperature range. It is used to establish a precise reference voltage for controlling an analog signal or circuit and is ideal for high-precision, low power applications. ADR444BRZ is available in three nominal reference voltage values, namely 0.85 V, 1.2 V, and 2.5 V.

Applications:

ADR444BRZ is ideal for applications that involve precision analog signal and circuit control. It can be used in many different types of circuit designs, such as in portable and battery-operated devices, communication and network systems, industrial process control systems, biomedical imaging systems, and automotive electronics. Other applications include precision analog-to-digital converters and digital-to-analog converters, voltage regulators, and data acquisition systems.

Working Principle:

The ADR444BRZ works by creating an accurately regulated reference voltage. This is achieved by combining an internal temperature sensor and a precision current source. The temperature sensor is used to measure the environment temperature and then adjust the reference voltage to account for any temperature changes. The current source, on the other hand, is used to maintain the reference voltage at a given value over the full operating temperature range. The reference voltage is then used to control the voltage level of an analog signal or circuit.

Pros & Cons:

ADR444BRZ offers several advantages, including high accuracy and stability over the full temperature range and low power consumption, making it suitable for battery-operated applications. It also has excellent noise performance, making it ideal for applications requiring precise analog signal control. Additionally, it is available in three different nominal reference voltage values, giving designers flexibility when it comes to setting the precise voltage level.However, one drawback of ADR444BRZ is that it contains a limited number of external components, reducing its capability for customization. Additionally, it requires use of a CMOS Process, which some designers may be unfamiliar with. Lastly, the expected life expectancy of the device is limited, which may present issues for long term applications.

Conclusion:

ADR444BRZ is a voltage reference product series manufactured by ADI (Analog Devices). It is designed to provide excellent accuracy and stability over the full temperature range and is well suited for high-precision and low power applications. It is also used to create an accurately regulated reference voltage for controlling the voltage level of an analog signal or circuit. The device offers several advantages, but also comes with some drawbacks. Ultimately, ADR444BRZ is an ideal voltage reference solution for many different types of applications.

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