ISL90810WIU8Z-TK

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Data Acquisition – Digital Potentiometers have become an integral part of modern circuits and systems. The ISL90810WIU8Z-TK is a digital potentiometer device with a 10-bit resolution and high-performance features that make it suitable for a wide range of system uses. This article explains the various application fields of the device and its working principle.

Overview

The ISL90810WIU8Z-TK provides a 10-bit resolution digital potentiometer, or ‘pot’ for short, in a very small package. It is a CMOS potentiometer that is designed for use in space-constrained applications such as portable devices and high-density PCBs. The device offers a wide range of features that make it particularly suitable for the most demanding circuit applications.

Application Field

The ISL90810WIU8Z-TK has applications in system monitoring, control and protection in various automotive, industrial and consumer systems. It is a versatile device that can be used as a programmable voltage divider, as a potentiometer in current-sensing applications, and in DAC and ADC applications. The device can also be used to adjust the gain of operational amplifiers, amplify and attenuate signals, and adjust input/output characteristics. It can also be used for temperature sensing and control.

The ISL90810WIU8Z-TK is an ideal choice for accurate system control and management. It is an ideal solution for applications requiring precise tuning, system calibration, and user interface interaction. It is also used in applications requiring real-time potentiostat control and digital output measurements. It can be used in power supply design and management, as well as in process control, network communications, and digital signal processing.

Features

The ISL90810WIU8Z-TK features an easy-to-use GUI programming interface that allows fast setup and readjustment of the wiper settings. It also features a ‘smart’ programming algorithm that increases wiper resolution and accuracy. It has a wide range of power supply voltage options, and it is designed to draw very low quiescent current, reducing power consumption. The device boasts higher tolerable transient voltages, superior ESD protection, and a wide operating temperature range.

Working Principle

The ISL90810WIU8Z-TK functions as a voltage divider; a set of resistors (R1, R2 and W for the wiper) connected in series, and the output (VO) is taken from the midpoint of the divider. When the wiper is set to its midpoint, the output voltage (VO) is equal to the input voltage (VS) divided by two. By varying the wiper resistance, the output voltage is adjusted, and this can be used to control the current in a circuit, adjust the gain of an operational amplifier, or adjust the input gains of a transducer or audio preamplifier, among many other uses.

The ISL90810WIU8Z-TK device can be programmed using a simple microcontroller and I2C-compatible serial interface. The user can use the device’s GUI to adjust the wiper settings, or can program the settings with a few simple commands. The potentiometer wiper has a 10-bit resolution, with each increment of the wiper providing a 0.25% adjustment of the output.

Conclusion

The ISL90810WIU8Z-TK is a versatile and powerful digital potentiometer device with a number of advantageous features. It is suitable for a wide range of system uses, from power supply design and management to audio preamplifier and transducer input gains control. The wiper has a 10-bit resolution and the device can be programmed using a simple microcontroller and I2C-compatible serial interface. The ISL90810WIU8Z-TK is an ideal digital potentiometer device choice for a wide range of circuit applications.

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