CAT5110SDI-50GT3

Digital Potentiometers Overview

The CAT5110SDI-50GT3 is a single-channel, 32-tap digitally programmable potentiometer from onsemi. It operates within a 2.7 V to 5.5 V supply range and features a 50 kΩ end-to-end resistance with linear taper characteristics. The device utilizes a 2-wire up/down serial interface for wiper position control and includes power-on reset circuitry that defaults the wiper to midscale upon initialization. Packaged in a compact SC-70 (6-pin) format, it offers ultra-low standby current of 0.3 µA and glitchless switching between resistor taps.

Digital Potentiometers Feature Summary

• Single-potentiometer configuration with 32 digital tap positions
• Glitchless switching between resistor taps during operation
• Power-on reset (POR) sets wiper to midscale at startup
• Ultra-low standby current of 0.3 µA maximum
• SC-70 surface-mount package with 6 pins

Digital Potentiometers Applications

• LCD screen contrast and brightness adjustment
• Digital volume control in audio circuits
• Gain adjustment for operational amplifier configurations
• Replacement for mechanical potentiometers in calibration systems
• Line impedance matching applications

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'SDI' corresponds to the SC-70 package and '50' indicates the 50 kΩ resistance value. Confirm RoHS compliance status as the datasheet notes these devices are Pb-Free and Halogen Free. Check for any recent product change notices or obsolescence announcements directly from onsemi before finalizing procurement plans.

Digital Potentiometers Selection Notes

Select this component when a single-ended potentiometer function is required with a 50 kΩ nominal resistance. Ensure the application voltage remains between 2.7 V and 5.5 V. For variable resistor applications requiring only two terminals, consider the CAT5118 variant instead. Verify that the 32-tap resolution meets the precision requirements of the target circuit design.

Digital Potentiometers Part Context

This part belongs to the CAT5110 family of 32-tap digital potentiometers manufactured by onsemi. It shares the same core architecture and interface protocols with variants offering different resistance values (10 kΩ, 100 kΩ) and alternative packages such as SOT-23. The SDI suffix specifically denotes the SC-70 6-lead package configuration.

Digital Potentiometers Replacement Considerations

Direct functional replacements include other CAT5110 variants with different resistance values if the circuit allows. Cross-family alternatives may require verification of pin compatibility and interface timing specifications. No direct public substitute part numbers are confirmed in the provided documentation.