ISL22317WFRTZ

Digital Potentiometers Overview

The ISL22317WFRTZ is a single, low-voltage Digitally Controlled Potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features a non-volatile memory architecture that retains resistance settings during power loss. The device operates within a supply voltage range of 2.7V to 5.5V and offers 64 user-adjustable tap positions with an end-to-end resistance tolerance of ±20%. Designed for surface-mount applications, it utilizes an I²C-compatible serial interface for digital control. The component is housed in a compact 8-lead TSSOP package and is rated for operation across an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Non-volatile memory retains wiper position after power cycle
• Single channel with 64 discrete tap positions
• I²C compatible serial interface for digital control
• Operating supply voltage range of 2.7V to 5.5V

Digital Potentiometers Applications

• Audio volume and tone control circuits
• Programmable gain amplifier biasing
• Voltage reference adjustment
• LED brightness dimming control

Digital Potentiometers Procurement Notes

Verify the specific suffix 'FRTZ' against the manufacturer's current datasheet to confirm the tape-and-reel packaging quantity and RoHS compliance status. As this component belongs to the Intersil legacy portfolio now managed by Renesas, check for End-of-Life (EOL) notifications or manufacturing site change notices (PCN) that may affect long-term availability or sourcing channels.

Digital Potentiometers Selection Notes

Select this component when a single-channel, digitally adjustable resistor is required with non-volatile retention capabilities. Ensure the system logic levels are compatible with the I²C interface and that the available 64 taps provide sufficient resolution for the application. Verify that the 2.7V minimum operating voltage aligns with the system's power rail constraints.

Digital Potentiometers Part Context

This part is part of the ISL22317 family of XDCPs, which provides a digital alternative to mechanical potentiometers. The 'W' indicates the wide temperature range variant, while 'FRTZ' specifies the TSSOP-8 package and lead-free/RoHS compliant tape-and-reel packaging configuration.

Digital Potentiometers Replacement Considerations

Direct pin-to-pin replacements within the same family include the ISL22317UFRTZ (industrial temperature range). Cross-manufacturer equivalents should be sought among other single-channel non-volatile digital potentiometers with I²C interfaces, ensuring matching resistance values and tap counts.