X9421WV14I-2.7T1

Digital Potentiometers Overview

The X9421WV14I-2.7T1 is a single digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation, originally designed by Intersil. It integrates a 10kΩ resistor array with 64 taps and an SPI serial interface on a monolithic CMOS IC. The device operates within a VCC range of 2.7V to 5.5V and features four non-volatile data registers for storing wiper positions or system parameters. It includes power-on recall functionality, loading the default register DR0 upon startup. The component is housed in a 14-lead TSSOP package and supports industrial temperature ranges from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Single Digitally Controlled Potentiometer with 64 resistor taps and 10kΩ end-to-end resistance.
• SPI serial interface supporting write, read, and transfer operations with hardware write protect.
• Four non-volatile data registers allow storage of multiple wiper positions or general-purpose data.
• Low standby current (<5µA max) and power-on recall of saved wiper position.

Digital Potentiometers Applications

• Adjusting gain in voltage amplifier circuits.
• Setting programmable DC reference voltages for comparators and detectors.
• Controlling volume in audio circuits.
• Trimming offset voltage errors in amplifier circuits.
• Setting output voltage of voltage regulators.

Digital Potentiometers Procurement Notes

Verify component authenticity as this part may be obsolete. Confirm RoHS compliance status based on specific manufacturing lot, as early versions may differ. Check for lead-free packaging requirements if applicable to your assembly process. Ensure the supplier provides valid traceability documentation for industrial grade components.

Digital Potentiometers Selection Notes

Select this model for applications requiring a single potentiometer with SPI control and non-volatile memory. The 10kΩ resistance value suits moderate impedance circuits. Ensure the host microcontroller supports the required SPI clock frequency up to 2MHz. Verify that the 14-TSSOP package fits the PCB footprint constraints.

Digital Potentiometers Part Context

This component belongs to the X9421 series of low noise, low power digitally controlled potentiometers. It is part of the XDCP™ family, which combines solid-state reliability with digital flexibility. The 'W' indicates 10kΩ resistance, 'V' denotes 14-lead TSSOP package, 'I' specifies industrial temperature range, and 'T1' indicates tape and reel packaging.

Digital Potentiometers Replacement Considerations

Public datasheets suggest ISL22416 and ISL22419 as possible substitute products. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement supports the required SPI interface and non-volatile memory features.