CAT5115ZI-50-T3

Digital Potentiometers Overview

The CAT5115ZI-50-T3 is a single digital potentiometer IC from onsemi, featuring a 50 kΩ linear taper resistor array with 32 tap positions. It operates on a single supply voltage ranging from 2.5 V to 6.0 V and draws a maximum supply current of 100 µA during increment operations. The device utilizes an Up/Down serial interface controlled by CS, U/D, and INC pins to adjust the wiper position. Packaged in an MSOP-8 surface-mount case (CASE 846AQ), it functions as an electronic replacement for mechanical potentiometers without non-volatile memory storage.

Digital Potentiometers Feature Summary

• 32-position linear taper potentiometer with 50 kΩ nominal resistance
• Up/Down serial control interface using CS, U/D, and INC inputs
• Single supply operation compatible with 2.5 V to 6.0 V logic levels
• Buffered wiper output terminal (RW) for improved drive capability

Digital Potentiometers Applications

• Automated product calibration on high-volume production lines
• Remote control adjustments for inaccessible or hazardous equipment
• Offset, gain, and zero control in programmable instrumentation amplifiers
• Contrast, brightness, and volume controls in consumer electronics

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized onsemi distributors. Confirm RoHS compliance and lead finish specifications (NiPdAu). Check for obsolescence status as manufacturing schedules may change. Ensure ESD handling protocols are followed due to CMOS technology sensitivity.

Digital Potentiometers Selection Notes

Select this part when volatile memory behavior is acceptable, as the wiper resets to mid-scale (tap 15) upon power-up. Compare against CAT5114 if power-on recall of the last stored position is required. Verify that the 32-tap resolution meets the application's precision requirements compared to higher-resolution alternatives.

Digital Potentiometers Part Context

This component belongs to the CAT5115 family of 32-tap digitally programmable potentiometers. The 'Z' suffix indicates the MSOP-8 package, 'I' denotes industrial temperature range (-40°C to +85°C), '50' specifies the 50 kΩ resistance value, and 'T3' refers to tape and reel shipping packaging.

Digital Potentiometers Replacement Considerations

CAT5114ZI-50-T3 provides identical pinout and functionality but includes non-volatile memory to retain wiper position after power loss. CAT5112ZI-50-T3 offers a buffered wiper similar to other variants but differs in specific electrical characteristics.