X9429WS16IZ

Digital Potentiometers Overview

The Intersil X9429WS16IZ is a single-channel digitally controlled potentiometer (XDCP) featuring a 10 kΩ resistance value and 64 tap positions. It utilizes a nonvolatile memory architecture to retain wiper settings without power. The device communicates via a 2-wire I²C serial interface, allowing for register-oriented direct read/write operations. Designed for low-power applications, it operates within a supply voltage range of 2.7 V to 5.5 V and supports dual supplies up to ±5.5 V. The component is housed in a 16-lead SOIC package and functions across an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Nonvolatile memory retains wiper position data for 100 years with 100,000 endurance cycles per bit.
• I²C serial interface with optional address selection for multi-device systems.
• Low standby current consumption of less than 1 µA, suitable for battery-operated equipment.
• Linear taper configuration with ±20% resistance tolerance and ±300 ppm/°C temperature coefficient.

Digital Potentiometers Applications

• Battery-powered portable devices requiring low quiescent current.
• Industrial control systems needing programmable gain or offset adjustments.
• Audio volume control circuits utilizing digital potentiometer functionality.

Digital Potentiometers Procurement Notes

Verify the specific suffix 'WS' against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Check the official datasheet for any obsolescence notices or recommended design-in alternatives, as this part number may be subject to lifecycle changes. Ensure the selected package variant matches the PCB footprint requirements.

Digital Potentiometers Selection Notes

Select this component when a single-channel, 10 kΩ digital potentiometer with persistent memory is required. Confirm that the system voltage falls within the 2.7 V to 5.5 V range. Verify that the I²C bus speed is compatible with the device's specifications. Consider the 16-SOIC package dimensions if space constraints are critical.

Digital Potentiometers Part Context

This component belongs to the X9429 series of single XDCPs from Intersil, now part of Renesas Electronics. The series offers various resistance values and interface options, including SPI and I²C variants. The X9429 specifically targets applications replacing mechanical potentiometers in environments where reliability and nonvolatile adjustment are essential.

Digital Potentiometers Replacement Considerations

Intersil recommends the ISL22316 or ISL22319 as alternative solutions for new designs. These newer parts offer similar functionality with potential improvements in performance or packaging. Verify electrical compatibility before substitution.