ISL95811WFUZ

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Data acquisition - digital potentiometers are used to measure electrical signals that vary over a wide range of voltage, current and resistance. The ISL95811WFUZ is a digital potentiometer designed for these applications. As a 3-terminal device, the ISL95811WFUZ works by dividing the input voltage applied to its two terminals into a set number of can be programmed for resistance ratio steps. The resistance at the third terminal is varied dynamically depending on the voltage at the input terminal, providing a smooth and linearly adjustable output. The device also features a fixed and programmable output resistance range.

The main application field of the ISL95811WFUZ is for low voltage, high accuracy, dynamic resistance and voltage switching. It can be used to switch small currents with very low quiescent current draw together with very low on-resistance. Specific applications include switching reference voltage and current; digital power control; filtering and dynamic resistance tuning, and many more.

The ISL95811WFUZ working principle is based on two key technologies - the Charge Balance Switching technique and the Duplex Charge Pump technology. The Charge Balance Switching technique, which is used to select a non-zero calibrated resistor network, introduces an asymmetric switching behavior in the device. This is achieved by changing the resistance between two power rails at the same time. The Duplex Charge Pump technology allows for a very low quiescent current and efficient power management. The combination of these two technologies enables low quiescent current, low power loss and low on-resistance.

The ISL95811WFUZ also utilizes a Digital Serial Interface that provides communication between the device and the system. This includes the ability to program the resistance range, resolution, and more. The device is factory configured with a preset, non-zero resistor network that is tunable according to the needs of the user, allowing for precise voltage control and dynamic response.

In addition, the ISL95811WFUZ features an open drain output that is used to monitor the status of the conditioner and provides additional fault protection. The device has both fixed and adjustable current limit, adjustable delay, and continuous monitor of the input signals.

The ISL95811WFUZ is a powerful digital potentiometer that has been designed for commercial applications where precision, power management, and cost savings are paramount. Its features of low quiescent current, low power loss, and low on-resistance, provide a vast array of applications in the consumer, industrial, and automotive sectors.

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