ADR364BUJZ-REEL7

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ADR364BUJZ-REEL7 is a specific PMIC – Voltage Reference integrated circuit (IC) from Texas Instruments – TI. It is a precision voltage reference, providing 0.8 V between its output and input terminals with a maximum 10 mV ripple, at ambient temperatures from –40°C to +125°C. This PMIC uses TI’s proprietary low offset voltage technology, minimizing the offset voltage between the input and output terminals even after longterm use.

The power supply of this PMIC is a maximum of 10 volts, which makes it suitable for battery-operated applications such as medical devices, glucose meters and hand-held instruments. Additionally, its low power consumption is advantageous in term of power savings and its layout allows for replacing bulky components with minimal layout efforts.

ADR364BUJZ-REEL7 features several modes of operation. Firstly, its temperature compensation mode allows for low offset voltage for the entire temperature range by connecting a suitable resistance between output and input. Secondly, its constant current mode allows for the output voltage to remain constant despite the changing temperature, again by connecting the appropriate resistance. Lastly, its open loopcompensation mode allows for the adjustment of the output voltage by using a resistor divider between the input and output pin.

The working principle of ADR364BUJZ-REEL7 is based on its integrated Voltage Regulator. The regulator contains an operational amplifier and a comparator that sense the input and output voltages. Whenever the output voltage is higher than the input voltage, the amplifier transfers current to the output terminals, via an internal resistor network, in order to generate the reference voltage. In case of temporary power drops the regulator shares current from the output terminals in order to keep the reference voltage steady.

The output voltage of this PMIC is also distributed through its V.T. pin, providing a controlled and regulated DC output as a result. Furthermore, it is important to note that the V.T. pin has two associated formulas, the first one for controlling the output voltage and the second one for controlling the output electrical current. The V.T. pin has a maximum voltage of 19 volts and a maximum current of 100 mA.

In conclusion, ADR364BUJZ-REEL7 is a specific PMIC – Voltage Reference IC from Texas Instruments – TI suitable for battery-operated applications with a maximum 10 volts power supply and low power consumption. It has several modes of operation and works based on a Voltage Regulator with a maximum voltage of 19 volts and a maximum current of 100 mA that delivers a constant and regulated DC output.

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