CAT5269WI-50

Digital Potentiometers Overview

The CAT5269WI-50 is a dual-channel digital potentiometer IC manufactured by onsemi. It features two independent 50 kOhm resistive elements, each with 256 linear taps for precise resistance adjustment. The device incorporates non-volatile memory to retain wiper settings during power loss and utilizes a 2-wire I2C serial interface for control. It operates within a supply voltage range of 2.5 V to 6 V and supports an industrial temperature range from -40°C to +85°C. The component is housed in a 24-pin SOIC package.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 50 kOhm resistance per channel
• 256-tap resolution with linear taper characteristics
• Non-volatile memory retains wiper position after power cycle
• I2C 2-wire serial interface for digital control

Digital Potentiometers Applications

• Automated gain control in signal processing circuits
• Digital trimming of analog reference voltages
• Programmable biasing for operational amplifiers
• Calibration systems requiring persistent setting storage

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T1' for tape-and-reel packaging when sourcing. Confirm current availability status as distribution channels may list this component as obsolete or limited stock. Ensure the selected distributor provides valid datasheets confirming the 24-pin SOIC package and I2C compatibility before procurement.

Digital Potentiometers Selection Notes

Select this model for applications requiring dual independent potentiometers with persistent state retention. Verify that the system logic level matches the I2C interface requirements. Consider the 20% tolerance and 300 PPM/C temperature coefficient for precision calibration needs. Ensure the PCB layout accommodates the SOIC-24 footprint and thermal dissipation limits.

Digital Potentiometers Part Context

This component belongs to the CAT526x family of dual digital potentiometers. It shares architectural similarities with the CAT5261 but differs in its communication interface, utilizing I2C instead of SPI. The part serves as a solid-state replacement for mechanical potentiometers in environments where physical adjustment is impractical or hazardous.

Digital Potentiometers Replacement Considerations

Direct functional substitutes include the CAT5261 series for SPI-based interfaces, though pinouts and control protocols differ. Cross-reference with other dual-channel NV digital potentiometers if I2C compatibility is not strictly required. Verify package dimensions and electrical parameters against alternative vendors.