CAT5419WI-00

Digital Potentiometers Overview

The CAT5419WI-00 is a dual-channel digital potentiometer IC manufactured by onsemi. It features two independent potentiometers, each with 64 resistive taps and a total resistance of 100 kOhms. The device utilizes a non-volatile memory architecture to retain wiper positions during power loss. Control is achieved via a standard 2-wire serial interface (I2C compatible). It operates within a supply voltage range of 2.5 V to 6 V and draws approximately 1 mA of operating current. The component is housed in a TSSOP-24 surface-mount package and supports linear taper characteristics.

Digital Potentiometers Feature Summary

• Dual channel configuration with 64 taps per potentiometer
• Non-volatile memory retains wiper settings after power cycle
• 2-Wire Serial (I2C) control interface for simplified connectivity
• 100 kOhms resistance value with linear taper

Digital Potentiometers Applications

• Audio volume and tone control circuits
• Programmable gain amplifier adjustments
• Voltage reference trimming
• Sensor calibration systems

Digital Potentiometers Procurement Notes

Verify the specific suffix 'WI' against the manufacturer's latest datasheet to confirm pinout compatibility and package dimensions. Ensure the design accounts for the 2-wire serial protocol timing requirements. Confirm that the 100 kOhms resistance value aligns with the target circuit impedance constraints before finalizing the bill of materials.

Digital Potentiometers Selection Notes

Select this component when a dual-channel solution with non-volatile storage is required. The 100 kOhms resistance is suitable for moderate impedance applications. Verify that the system logic levels are compatible with the I2C interface. Consider the TSSOP-24 package size relative to available PCB real estate compared to single-channel alternatives.

Digital Potentiometers Part Context

This part belongs to the CAT5419 series of dual digital potentiometers. It shares architectural similarities with other members like the CAT5411 and CAT5417 but differs in resistance values and interface types. The 'W' indicates the SOIC/TSSOP plastic package variant, while 'I' denotes the industrial temperature range.

Digital Potentiometers Replacement Considerations

Direct substitutes include other CAT5419 variants with different resistance values or interfaces, such as CAT5419BI-50. Cross-family replacements from other manufacturers require verification of pinout, voltage ratings, and memory type.