CAT5115LI-00

Digital Potentiometers Overview

The CAT5115LI-00 is a single digital potentiometer IC from onsemi, designed as an electronic replacement for mechanical potentiometers. It features a 32-tap linear taper resistor array with a nominal resistance of 100 kOhms and a tolerance of 20%. The device operates on a single supply voltage ranging from 2.5 V to 6 V, with a typical operating current of 100 uA. It utilizes a serial up/down interface controlled by three input pins to determine the wiper position via an internal counter and decoder. The component is housed in an 8-pin PDIP package and supports an industrial temperature range from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Single digital potentiometer with 32 adjustable taps
• 100 kOhms nominal resistance with linear taper
• Serial Up/Down control interface requiring only three pins
• Low power consumption with 100 uA operating current

Digital Potentiometers Applications

• Automated product calibration
• Remote control adjustments
• Offset, gain, and zero control circuits
• Tamper-proof calibrations
• Programmable analog functions

Digital Potentiometers Procurement Notes

Verify the specific suffix 'LI-00' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Check for End-of-Life (EOL) status or production discontinuation notices, as older onsemi components may have limited availability. Ensure the PDIP-8 package matches the target PCB footprint requirements before procurement.

Digital Potentiometers Selection Notes

Select this component when a non-volatile memory is not required, as the CAT5115 series typically retains settings only during power. Compare the 100 kOhms resistance value against circuit impedance requirements. Verify that the serial interface logic levels are compatible with the controlling microcontroller. Consider the PDIP-8 package constraints if surface-mount technology is preferred for the final assembly.

Digital Potentiometers Part Context

This part belongs to the CAT5115 family of 32-tap digitally programmable potentiometers. Variants within this family differ primarily in resistance values (10 k, 50 k, 100 k), package types (PDIP, SOIC, TSSOP, MSOP), and interface configurations. The CAT5115LI-00 specifically denotes the 100 kOhms version in a PDIP package with the standard serial interface.

Digital Potentiometers Replacement Considerations

Direct replacements include other CAT5115 variants with different resistance values or packages, such as CAT5115VI-00 or CAT5115ZI-00, provided the interface and pinout remain compatible. Cross-reference with the CAT5114 series if non-volatile memory retention is required instead.