ISL22343TFR20Z

Digital Potentiometers Overview

The ISL22343TFR20Z is a quad digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features four independent circuits, each with 256 taps and a resistance value of 50 kOhms. The device utilizes an I²C serial interface for control and incorporates non-volatile memory to retain wiper settings. It operates within a supply voltage range of 2.25V to 5.5V and supports optional address selection. The component is housed in a 20-QFN-EP package measuring 5x5 mm and is rated for operation between -40°C and +125°C.

Digital Potentiometers Feature Summary

• Quad configuration with 256-tap resolution per circuit
• Non-volatile memory retains wiper position after power loss
• I²C serial interface with optional address selection
• 50 kOhm nominal resistance with ±20% tolerance

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference adjustment
• Digital volume control in audio systems
• Sensor biasing and calibration

Digital Potentiometers Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging when sourcing this specific part number. Confirm the 50k Ohm resistance value matches design requirements, as other variants in the ISL22343 family offer different resistance values. Ensure the 20-QFN-EP footprint aligns with the PCB layout specifications.

Digital Potentiometers Selection Notes

Select the ISL22343TFR20Z when four independent digital potentiometers are required in a compact surface-mount package. The 50k Ohm resistance and 256-tap resolution suit applications requiring moderate precision. Verify that the I²C bus speed and available address bits accommodate the system's addressing scheme.

Digital Potentiometers Part Context

This component belongs to the XDCP™ series from Renesas, designed for low-noise, low-power digital potentiometry. The ISL22343 variant specifically provides a quad-channel solution, distinguishing it from dual-channel models like the ISL22323. The TFR20Z designation specifies the 50k Ohm resistance, tape-and-reel packaging, and QFN-EP form factor.

Digital Potentiometers Replacement Considerations

ISL22343UFR20Z: Identical electrical specifications but supplied in tube packaging instead of tape-and-reel.