ISL95811WFRTZ

Digital Potentiometers Overview

The ISL95811WFRTZ is a single digitally controlled potentiometer (XDCP) with non-volatile memory, manufactured by Renesas Electronics Corporation. It features an I2C serial interface and operates within a supply voltage range of 2.7V to 5.5V. The device provides 256 resistor taps for 0.4% resolution and includes five general-purpose non-volatile bytes. Key electrical parameters include a total resistance of 10kΩ, a typical wiper resistance of 70Ω at VCC = 3.3V, and a standby current of 10µA maximum. It supports hardware write protection and retains data for 50 years at temperatures ≤ +55°C.

Digital Potentiometers Feature Summary

• Single Digitally Controlled Potentiometer (XDCP) with 256 taps and 0.4% resolution
• I2C Serial Interface supporting up to 400kHz clock frequency
• Non-volatile storage for wiper position and five general-purpose bytes
• Hardware Write Protect (WP) pin to prevent unauthorized writes

Digital Potentiometers Applications

• Control and parameter adjustments in electronic circuits
• Signal processing applications requiring digital resistance tuning
• Low power systems utilizing I2C bus communication

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for lead-free packaging specifications. Ensure the ordering suffix matches the required package type and temperature range. Review datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing procurement.

Digital Potentiometers Selection Notes

Select the ISL95811WFRTZ when a 10kΩ total resistance is required with extended industrial temperature operation from -40°C to +125°C. Choose this part over the MSOP variant if a compact 8-lead 3x3mm TDFN package is necessary for space-constrained designs. Ensure the application utilizes an I2C master capable of handling open-drain outputs with appropriate pull-up resistors.

Digital Potentiometers Part Context

The ISL95811 belongs to the XDCP family of integrated circuits combining digital potentiometry with EEPROM functionality. This specific model uses the 'W' option indicating 10kΩ resistance and the 'RTZ' suffix denoting the 8-lead TDFN package. It serves as a solid-state replacement for mechanical potentiometers in environments where physical adjustment is impractical.

Digital Potentiometers Replacement Considerations

The datasheet explicitly recommends the ISL95810 as a replacement for new designs. Verify compatibility regarding pinout, package dimensions, and electrical specifications when substituting.