X9421WV14I-2.7

Digital Potentiometers Overview

The X9421WV14I-2.7 is a single digitally controlled potentiometer (XDCP) manufactured by Intersil, now part of Renesas Electronics. It features a 10 kOhm resistance value with 64 taps and utilizes an SPI serial interface for control. The device operates on supply voltages ranging from +2.7 V to +5.5 V for VCC and V+, and -2.7 V to -5.5 V for V–. Key electrical specifications include a standby current of less than 1 µA and a typical wiper resistance of 40 Ohms. The component is housed in a 14-TSSOP package and supports non-volatile memory storage for wiper positions.

Digital Potentiometers Feature Summary

• Solid-state digital potentiometer with SPI serial interface
• Non-volatile memory storing up to four wiper positions per potentiometer
• Low power CMOS technology with standby current under 1 µA
• Dual supply operation: VCC/V+ (2.7V to 5.5V) and V– (-2.7V to -5.5V)

Digital Potentiometers Applications

• Audio volume control and tone adjustment
• Programmable gain amplifiers
• Voltage reference trimming
• Adaptive biasing circuits

Digital Potentiometers Procurement Notes

Verify the manufacturing source, as the part was originally produced by Xicor before its acquisition by Intersil. Confirm RoHS compliance status, as documentation indicates variations between compliant and non-compliant versions for similar suffixes. Check current availability status, as some distributors list this specific part number as obsolete or discontinued.

Digital Potentiometers Selection Notes

Select this component for applications requiring precise, software-adjustable resistance without mechanical wear. Ensure the system design accommodates the dual-supply requirement if negative voltage rails are needed. Verify that the SPI interface timing matches the microcontroller's capabilities. Consider the ±20% tolerance and ±300ppm/°C temperature coefficient for precision requirements.

Digital Potentiometers Part Context

This component belongs to the X9421 series of single-channel digital potentiometers. It is functionally related to other parts in the X94xx family, such as the X9420, which shares similar interface and memory characteristics but may differ in specific electrical parameters or packaging options within the XDCTM product line.

Digital Potentiometers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult manufacturer cross-reference tools for parametrically similar devices.