CAT5118TBI-10

Digital Potentiometers Overview

The CAT5118TBI-10 is a single-channel digital potentiometer featuring 32 tap positions and linear taper characteristics. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical operating current of 25 µA. The device utilizes a 2-wire serial interface for up/down control and includes volatile wiper memory, requiring position retention via external logic or power cycling management. Packaged in a space-saving SOT-23-5 format, it serves as a direct replacement for mechanical potentiometers in applications requiring precise resistance adjustment.

Digital Potentiometers Feature Summary

• 32-tap resolution with linear taper configuration
• 2-Wire serial up/down control interface
• Volatile wiper memory status
• Single-supply operation (2.7 V to 5.5 V)

Digital Potentiometers Applications

• LCD screen bias adjustment
• Volume control circuits
• Gain adjustment in signal conditioning
• Line impedance matching

Digital Potentiometers Procurement Notes

Verify the specific suffix 'GT3' or 'GT10' against the required tape-and-reel quantity, as these denote different packaging formats. Confirm availability status, as this component may be subject to end-of-life notices or limited stock depending on the distributor region. Ensure the volatile memory requirement aligns with system power-loss handling capabilities.

Digital Potentiometers Selection Notes

Select this model when a variable resistor configuration is needed rather than a potentiometer setup. Verify that the 32-step resolution meets the application's precision requirements compared to higher-resolution alternatives like the CAT5111. Ensure the circuit design accounts for the loss of wiper position upon power removal due to volatile memory.

Digital Potentiometers Part Context

This component belongs to the CAT511x family of MiniPot digitally programmable potentiometers manufactured by onsemi. It shares the same core architecture and interface protocols with variants such as the CAT5110 and CAT5119, differing primarily in terminal configuration and specific resistance value options within the 10 kΩ, 50 kΩ, and 100 kΩ range.

Digital Potentiometers Replacement Considerations

Direct pin-compatible substitutes include other CAT5118 variants with different resistance values (e.g., CAT5118I-50) or the CAT5125 series if 6-pin packaging is acceptable. Cross-reference with CAT5119 if potentiometer functionality is required instead of variable resistor mode.