X9420WV14IZ-2.7

Digital Potentiometers Overview

The X9420WV14IZ-2.7 is a single digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation, formerly Intersil. It features a 10 kΩ resistor array with 64 taps and operates on an SPI serial interface. The device supports dual power supplies: VCC for the digital section (2.7V to 5.5V) and analog supplies V+ (2.7V to 5.5V) and V– (-2.7V to -5.5V). It includes a volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers for storing wiper positions or system parameters. The component is housed in a 14-lead TSSOP package and is rated for industrial temperatures from -40°C to +85°C.

Digital Potentiometers Feature Summary

• SPI Serial Interface with register-oriented direct read/write/transfer capabilities
• Nonvolatile memory storing up to four wiper positions per potentiometer
• Low standby current consumption of less than 1µA
• High reliability with 100,000 data change endurance and 100-year data retention

Digital Potentiometers Applications

• Control and parameter adjustments in electronic systems
• Signal processing applications requiring variable resistance
• Voltage divider configurations for offset voltage adjustment
• Variable gain control in amplifier circuits

Digital Potentiometers Procurement Notes

Verify that the specific ordering suffix matches the required temperature range and package type. Confirm RoHS compliance status as manufacturing processes may vary. Check for end-of-life notices or obsolescence warnings prior to procurement decisions.

Digital Potentiometers Selection Notes

Select this component when a single-channel digital potentiometer with SPI control is required. Ensure the supply voltage requirements align with the VCC, V+, and V– specifications. Consider the 10 kΩ resistance value and 64-tap resolution against application needs.

Digital Potentiometers Part Context

This part belongs to the X9420 family of low noise, low power digitally controlled potentiometers. It is designed as a solid-state replacement for mechanical potentiometers in various industrial and commercial applications.

Digital Potentiometers Replacement Considerations

Public datasheets indicate ISL22416, ISL22419, ISL95311, and ISL95711 as possible substitute products.

Digital Potentiometers FAQ

How does the device handle wiper position recall after power loss?

Upon power-up, the contents of Data Register 0 (DR0) are automatically transferred to the volatile Wiper Counter Register (WCR), restoring the last stored wiper position.

What is the function of the HOLD pin?

The HOLD pin allows pausing serial communication with the controller without resetting the serial sequence. It must be held HIGH when not actively pausing.

Can multiple X9420 devices share the same SPI bus?

Yes, a maximum of two devices may occupy the SPI serial bus, distinguished by the state of the A0 address input pin.