CAT5111YI-50-G

Digital Potentiometers Overview

The CAT5111YI-50-G is a single-channel digital potentiometer IC from onsemi, featuring a 50 kΩ linear taper resistance array with 100 tap positions. It utilizes a buffered wiper output driven by an operational amplifier for rail-to-rail operation. The device employs a non-volatile EEPROM to store the wiper position, ensuring data retention during power loss and automatic recall upon power-up. Control is managed via a three-wire serial interface consisting of Chip Select (CS), Up/Down (U/D), and Increment (INC) pins. It operates on a single supply voltage ranging from 2.5 V to 6.0 V.

Digital Potentiometers Feature Summary

• 100-tap linear taper digital potentiometer with 50 kΩ nominal resistance
• Non-volatile EEPROM storage retains wiper setting across power cycles
• Buffered wiper output provides rail-to-rail voltage swing capability
• Three-wire serial interface (CS, U/D, INC) for increment/decrement control

Digital Potentiometers Applications

• Automated product calibration systems
• Remote control adjustments in inaccessible environments
• Offset, gain, and zero control in instrumentation
• Tamper-proof calibration applications
• Programmable analog functions such as volume or brightness controls

Digital Potentiometers Procurement Notes

Verify the specific package suffix 'Y' corresponds to TSSOP-8 and lead finish NiPdAu when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the required resistance value and interface type for system integration.

Digital Potentiometers Selection Notes

Select this component over the CAT5113 if a buffered wiper output is required for driving low-impedance loads. The CAT5111 is unsuitable for two-terminal variable resistor configurations due to its buffer design; use the CAT5113 for that application. Verify supply voltage compatibility within the 2.5 V to 6.0 V range.

Digital Potentiometers Part Context

This device belongs to the CAT511x series of digital potentiometers manufactured by onsemi. The 'Y' suffix indicates the TSSOP-8 package variant. The 'I' denotes the industrial temperature range (-40°C to +85°C). The '50' specifies the 50 kΩ resistance value, and 'G' indicates RoHS compliance.

Digital Potentiometers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.