ISL22446WFV20Z

Digital Potentiometers Overview

The ISL22446WFV20Z is a quad digitally controlled potentiometer (XDCP) integrating four independent DCPs and non-volatile memory on a monolithic CMOS IC. It features a 10kΩ total resistance option with 128 resistor taps per channel, controlled via an SPI serial interface. The device includes volatile Wiper Registers (WR) for immediate wiper positioning and non-volatile Initial Value Registers (IVR) to recall settings at power-up. Operating within a 2.7V to 5.5V supply range, it offers low noise performance, shutdown mode with maximum 5µA current, and high reliability with 1,000,000 EEPROM endurance cycles.

Digital Potentiometers Feature Summary

• Quad configuration with 128 taps and 10kΩ resistance per potentiometer
• SPI serial interface with non-volatile storage of wiper positions
• Shutdown mode reducing supply current to 5µA maximum
• Extended industrial temperature range from -40°C to +125°C

Digital Potentiometers Applications

• Control and parameter adjustments in electronic systems
• Signal processing applications requiring variable resistance
• Low power portable devices utilizing SPI communication

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized Renesas or Intersil distributors. Confirm the specific 'W' resistance option (10kΩ) and 'FV' package marking (20 Ld TSSOP) match design requirements. Check for RoHS compliance status and ensure the datasheet revision aligns with manufacturing specifications.

Digital Potentiometers Selection Notes

Select this model for applications requiring four independent digitally adjustable resistors with persistent memory. Ensure the host system supports SPI Mode 0 communication. Verify that the 10kΩ resistance value fits the circuit's impedance constraints compared to the 50kΩ alternative. Consider the TSSOP-20 package dimensions for PCB layout compatibility.

Digital Potentiometers Part Context

This component belongs to the ISL22446 family of XDCPs. It is functionally similar to the ISL22446UFV20Z but differs in total resistance (10kΩ vs 50kΩ). The datasheet notes this part is not recommended for new designs and suggests the ISL22424 as a replacement.

Digital Potentiometers Replacement Considerations

The datasheet explicitly recommends the ISL22424 as the replacement part for the ISL22446 series.