CAT5111LI-50

Digital Potentiometers Overview

The CAT5111LI-50 is a single-channel digital potentiometer IC manufactured by onsemi. It features a resistance value of 50 kOhms with 100 taps and linear taper characteristics. The device utilizes a non-volatile brush memory to retain settings without power. Control is managed via a serial interface supporting up/down commands. It operates within a supply voltage range of 2.5 V to 6 V, with typical operation at 3.3 V or 5 V. The component draws a maximum operating current of 200 uA and functions across an industrial temperature range from -40°C to +85°C. It is housed in an SOIC-8 surface-mount package.

Digital Potentiometers Feature Summary

• Non-volatile memory retains wiper position after power loss
• 100-tap resolution with linear taper for precise adjustment
• Low power consumption with 200 uA operating current
• Serial control interface simplifies microcontroller integration

Digital Potentiometers Applications

• Audio volume control circuits
• Gain adjustment in instrumentation amplifiers
• Voltage reference trimming
• System calibration and configuration storage

Digital Potentiometers Procurement Notes

Verify the specific suffix 'LI' against official datasheets to confirm package type (SOIC-8) and temperature grade. Confirm end-of-life status as some variants in this series are discontinued. Ensure compatibility with existing PCB footprints before procurement.

Digital Potentiometers Selection Notes

Select this model for applications requiring persistent resistance settings without external EEPROM. Compare tap count and interface requirements against other CAT51xx variants. Verify that the 50 kOhm resistance value matches the circuit design constraints and that the serial interface protocol aligns with the host controller capabilities.

Digital Potentiometers Part Context

This component belongs to the CAT511x family of digital potentiometers. It shares core architecture with models like CAT5111VI-50 but differs in package and temperature rating. The LI suffix typically denotes a specific commercial/industrial temperature range and SOIC packaging variant within the broader product line.

Digital Potentiometers Replacement Considerations

Direct replacements include CAT5111VI-50-G for similar specifications in SOIC-8. Check for updated revisions or pin-compatible alternatives if the original part is discontinued. Ensure non-volatile memory behavior and interface timing remain compatible.