ISL95311UIU10Z-TK

Digital Potentiometers Overview

The ISL95311UIU10Z-TK is a digitally controlled potentiometer (XDCP) featuring an I2C serial interface. It provides 128 wiper tap points with 0.8% resolution and supports terminal voltages from 0V to +13.2V. The device includes nonvolatile memory that stores the wiper position, recalling it upon power-up. Key electrical parameters include a total resistance of 50kΩ, standby current of 2µA at VCC = +3.6V, and EEPROM endurance of 200,000 cycles. It operates within an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• I2C serial interface for direct communication
• Nonvolatile solid-state potentiometer with power-up recall
• 128 wiper tap points with 0.8% resolution
• Terminal voltage range of 0V to +13.2V

Digital Potentiometers Applications

• LCD contrast control
• Parameter and bias adjustments
• Industrial and automotive control systems
• Mechanical potentiometer replacement

Digital Potentiometers Procurement Notes

Verify the specific resistance option by checking the part marking code on the component body. The 'U' suffix indicates a 50kΩ total resistance variant, while 'W' denotes 10kΩ. Confirm the '-TK' suffix corresponds to tape and reel packaging specifications as defined in TB347. Ensure compatibility with the host system's I2C bus voltage levels and address configuration via A0/A1 pins.

Digital Potentiometers Selection Notes

Select this component when an I2C-controlled digital potentiometer is required instead of SPI or Up/Down interfaces. Choose the 50kΩ version for higher impedance applications. Consider the 10-Ld MSOP package constraints for PCB layout. Verify that the supply voltage ramp rate meets the 0.2V/ms requirement to ensure proper memory recall during power-up sequences.

Digital Potentiometers Part Context

This part belongs to the Intersil ISL9531x series of Digitally Controlled Potentiometers. It shares architectural similarities with the ISL95310 but differs in its control interface, utilizing I2C rather than an Up/Down interface. The device integrates a resistor array, wiper switches, control circuitry, and nonvolatile memory into a single CMOS chip.

Digital Potentiometers Replacement Considerations

Direct pin-to-pin replacements within the same family include the ISL95310UIU10Z if the application can support an Up/Down interface change, or other ISL9531x variants with different resistance values. Verify that any substitute maintains the 128-tap resolution and I2C protocol compatibility.