CAT5118SDI-00GT3

Digital Potentiometers Overview

The CAT5118SDI-00GT3 is a single-channel digital potentiometer from onsemi, featuring a 100 kΩ resistance value and linear taper. It provides 32 tap positions controlled via a 2-wire serial interface. The device operates within a supply voltage range of 2.7 V to 5.5 V with a typical current consumption of 25 µA. It utilizes volatile memory for wiper settings and functions across an industrial temperature range of -40°C to +85°C. The component is housed in a compact SC-70-6 surface-mount package.

Digital Potentiometers Feature Summary

• Single-channel digital potentiometer with 100 kΩ nominal resistance
• 32-tap resolution with linear taper characteristic
• 2-wire serial up/down control interface
• Low power consumption of 25 µA operating current

Digital Potentiometers Applications

• Volume control circuits
• Gain adjustment in signal conditioning
• Voltage reference trimming
• System calibration

Digital Potentiometers Procurement Notes

Verify the specific suffix 'SDI' against official datasheets to confirm the package type (SC-70-6) and resistance tolerance. Confirm availability status as distribution channels may list this part as obsolete or limited stock. Ensure the volatile memory requirement aligns with system power-loss behavior needs.

Digital Potentiometers Selection Notes

Select this model when a 100 kΩ variable resistance is required in a minimal footprint. The 2-wire interface simplifies PCB routing compared to 3-wire alternatives. Verify that the 32-step resolution meets the application's precision requirements, as higher-resolution options exist within the same family.

Digital Potentiometers Part Context

This component belongs to the CAT511x series of MiniPot digital potentiometers. It shares functional similarities with the CAT5110 and CAT5119 but differs in resistance value and internal configuration. The SDI suffix denotes the specific SC-70-6 packaging variant.

Digital Potentiometers Replacement Considerations

Direct replacements include other CAT511x variants such as CAT5110SDI-10GT3 (10 kΩ) or CAT5119SDI-100GT3 (100 kΩ) if pin compatibility is maintained. Verify interface protocol and memory volatility before substitution.