CAT5116LI

Digital Potentiometers Overview

The CAT5116LI is a dual, digitally controlled potentiometer manufactured by onsemi. It features two independent 64-tap resistive elements with an end-to-end resistance of 10 kOhms. The device communicates via a standard I2C serial interface, allowing for precise digital adjustment of wiper positions. It operates within a supply voltage range of 2.7V to 5.5V and includes non-volatile memory (NV) to retain the last wiper setting upon power cycle. The component is housed in an 8-lead SOIC package.

Digital Potentiometers Feature Summary

• Dual independent 64-position digital potentiometers
• Non-volatile memory retains wiper settings after power loss
• I2C compatible serial interface for control
• 10 kOhm nominal end-to-end resistance

Digital Potentiometers Applications

• Audio volume control circuits
• Programmable gain amplifiers
• Voltage reference trimming
• LCD bias voltage adjustment

Digital Potentiometers Procurement Notes

Verify the suffix 'LI' corresponds to the specific temperature grade and tape-and-reel packaging configuration required for your assembly process. Confirm the I2C address settings if multiple devices are used on the same bus. Ensure the PCB footprint matches the 8-SOIC package dimensions specified in the mechanical drawings.

Digital Potentiometers Selection Notes

Select this component when dual independent digital pots are required with non-volatile storage. The 10 kOhm resistance value suits moderate current applications. Verify that the system's I2C clock speed is compatible with the device's maximum frequency specifications. Consider the operating temperature range if the application involves extreme environmental conditions.

Digital Potentiometers Part Context

This part belongs to the CAT511x family of digital potentiometers. It shares architectural similarities with other members like the CAT5113 or CAT5117 but differs in the number of pots and resistance values. The 'L' indicates a lead-free RoHS-compliant package, while 'I' denotes industrial temperature range operation.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements may include other dual digital potentiometers from onsemi or competitors such as Microchip's MCP41xxx series, provided the resistance values and I2C compatibility match. Verify functional equivalence regarding non-volatile memory behavior and wiper resistance characteristics before substitution.