ISL23348UFVZ

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Data Acquisition – Digital Potentiometers

Digital potentiometers are increasingly popular tools in measurement circuitry. They provide a simple, cost-effective way to vary or measure voltages or currents, in a wide range of applications. The ISL23348UFVZ is a digital potentiometer designed for applications that require accuracy, linearity and programmability within a wide range of input voltages.

Applications

The ISL23348UFVZ is suitable for a variety of applications, from simple voltage control to precision current measurement. The IC can be used to regulate DC supply voltages, control electronic instruments such as potentiometers, or even monitor the current in a circuit. This device is often used in industrial power supplies, adjustable current sources, and amplifiers.

Working Principle

The ISL23348UFVZ is a three-terminal, voltage-controlled digital potentiometer that is constructed using CMOS technology. The device is capable of switching its wiper resistance between three different wattages. It is programmed via an on-chip SPI interface. It consists of two externally accessible resistor elements, each having an independent active path between the two endpoints of the device.

The device requires an input voltage between 0V and 12V. When the input signal is applied, the internal circuitry of the IC alters the wiper resistance to generate a corresponding resistance between the two external terminals. The resistance is linear over the range of input voltage, providing good accuracy and precision from the device.

The device has an internal register that is used to store the desired wiper resistance. This register can be programmed with the desired value, and the resistance of the device will be adjusted accordingly. This makes the device ideal for applications where the resistance must be adjusted quickly and accurately, such as when controlling a DC power supply or a motor.

In addition, the device features over-temperature protection, an adjustable reference voltage, and an adjustable voltage limit. All of these features make the ISL23348UFVZ an ideal choice for applications that require precise, reliable, and flexible control over voltages or currents.

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