X9420WV14I-2.7

Digital Potentiometers Overview

The X9420WV14I-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 discrete taps for precise adjustment. The device utilizes an SPI serial interface for control and includes non-volatile wiper memory to retain position settings during power cycles. It operates on dual supplies ranging from +/- 2.7 V to +/- 5.5 V or a single supply up to 5.5 V, with a typical supply current of 400 uA. The component is housed in a 14-pin TSSOP package and supports an operating temperature range from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Single channel digital potentiometer with 10 kOhm total resistance and 64 tap positions.
• SPI serial interface allowing direct read/write/transfer of wiper positions.
• Non-volatile memory stores up to four distinct wiper positions per potentiometer.
• Low power CMOS technology with standby current less than 1 µA.

Digital Potentiometers Applications

• Audio volume and tone control circuits requiring digital adjustment.
• Programmable gain amplifiers and variable bias voltage generation.
• Calibration systems needing persistent resistance settings after power loss.
• Instrumentation requiring remote programmable attenuation.

Digital Potentiometers Procurement Notes

Verify the manufacturer designation as Intersil or Renesas, as the company was acquired. Confirm the suffix 'I' indicates the industrial temperature grade (-40°C to +85°C). Ensure the package type matches the required 14-TSSOP footprint. Check RoHS compliance status based on the specific production batch date code, as older Intersil stock may differ from current Renesas specifications.

Digital Potentiometers Selection Notes

Select this component when a single-channel, SPI-controlled digital potentiometer with non-volatile storage is required. The 10 kOhm resistance and 64 taps offer a balance between resolution and noise performance. Ensure the system voltage aligns with the +/- 2.7 V to +/- 5.5 V supply range. Compare against the X9420WV14Z variant if a wider commercial temperature range is acceptable, or consider the X9429 series if I2C interface compatibility is preferred over SPI.

Digital Potentiometers Part Context

This part belongs to the X9420 family of low-noise, low-power digitally controlled potentiometers. The 'WV' suffix typically denotes the TSSOP-14 plastic package. The 'I' suffix specifies the industrial temperature rating. This model represents the standard single-potentiometer configuration within the XDCP line, designed for applications replacing mechanical pots in space-constrained PCB layouts.

Digital Potentiometers Replacement Considerations

The X9420WV14Z-2.7 is a pin-compatible alternative with a commercial temperature range. For I2C interface requirements, the X9429 series offers similar electrical characteristics but uses a different control protocol. Verify that any substitute maintains the 64-tap resolution and non-volatile memory functionality to ensure circuit compatibility.