ADR225HFZ

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ADR225HFZ devices are precision voltage references designed in PMIC - Voltage Reference category. These devices are designed to produce a precise voltage across a wide range of output voltages with extremely low drift, as well as fast settling times when in response to line, load, and/or temperature changes. In some application, the ADR225HFZ devices are offered in single, dual, and quad packages.

The major features of the ADR225HFZ Voltage Reference, which can be used in voltage reference and temperature sensing applications, include:

• Wide input voltage range of 2.2 V to 5.5 V
• Wide output voltage range of 0.8 V to 3.2 V
• Low drift over temperature
• Good temperature coefficient of 0.1mV/°C
• Fast settling characteristics
• High accuracy over temperature
• Very low noise and drift

The ADR225HFZ voltage reference is widely used in different fields where the ability to maintain an ultra-stable output voltage is required. These applications include power management, consumer electronics, medical, automotive, and aerospace applications. The device is also commonly used in digital-to-analog (D/A) and analog-to-digital (A/D) converters as an internal reference.

The ADR225HFZ devices are designed to produce a precise voltage output by using a voltage reference circuit consisting of two resistors, a bandgap reference, a differential amplifier, and a transconductance amplifier. The differential amplifier generates a reference voltage from the input voltage and the bandgap reference. This reference voltage is provided to the transconductance amplifier, which in turn, amplifies the difference between the reference voltage and the output voltage. This error signal then controls the output voltage through the feedback resistors. The combination of the feedback resistors and the transconductance amplifier creates a self-stabilizing circuit which helps keep the output voltage accurate over time.

The ADR225HFZ is a very stable, low-noise, low-drift voltage reference IC. It offers a wide input voltage range and a wide output voltage range, as well as very good accuracy over temperature. The device also features fast settling characteristics and a good temperature coefficient. The combination of these features makes the ADR225HFZ an ideal choice for applications where a high level of accuracy and stability are required.

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