ISL23428TFVZ-T7A

Digital Potentiometers Overview

The ISL23428TFVZ-T7A is a dual-channel, volatile digitally controlled potentiometer (DCP) manufactured by Renesas Electronics. It features two independent potentiometers, each with 128 taps and a resistance value of 10 kOhms. The device utilizes a Serial Peripheral Interface (SPI) for digital control of the wiper position. It operates within a supply voltage range of 1.7 V to 5.5 V and consumes approximately 100 uA of operating current. The component is housed in a 14-lead TSSOP package and supports an industrial temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual channel configuration with 128 taps per potentiometer
• 10 kOhms nominal resistance with linear taper
• SPI serial interface for wiper position control
• Volatile memory retaining settings only during power

Digital Potentiometers Applications

• Industrial process control systems requiring adjustable gain or reference voltages
• Portable instrumentation where low power consumption is critical
• Audio equipment for digital volume control applications
• Sensor signal conditioning circuits

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distributors as the part number indicates end-of-life status. Confirm that the volatile nature of the wiper register aligns with system requirements, as settings are lost upon power cycle. Ensure PCB layout accommodates the TSSOP-14 package dimensions and thermal characteristics for the specified industrial temperature range.

Digital Potentiometers Selection Notes

Select this component when dual independent variable resistors are needed in a compact surface-mount package. Compare against non-volatile variants if data retention across power cycles is required. Verify that the 10 kOhms resistance value fits the target circuit impedance constraints and that the SPI interface timing matches the host microcontroller capabilities.

Digital Potentiometers Part Context

This part belongs to the ISL23428 series of digitally controlled potentiometers. It shares architectural similarities with other members of the family but differs in pin count and channel configuration. The 'T7A' suffix typically denotes tape and reel packaging for automated assembly processes.

Digital Potentiometers Replacement Considerations

Publicly available substitute part numbers were not identified in the provided source material. Engineering teams should consult manufacturer obsolescence notices for recommended lifecycle alternatives.