ISL23428TFRUZ-T7A

Digital Potentiometers Overview

The ISL23428TFRUZ-T7A is a dual digitally controlled potentiometer (DCP) featuring two independent 100 kΩ resistive elements with 128 taps each. It utilizes an SPI serial interface for control and operates within a supply voltage range of 1.2 V to 5.5 V. The device incorporates volatile memory, requiring external retention of wiper positions upon power loss. Key electrical parameters include a maximum operating current of 100 µA and a minimum operating temperature of -40°C. The component is housed in a 16-lead UTQFN package measuring 2.6x1.8 mm.

Digital Potentiometers Feature Summary

• Dual independent digitally controlled potentiometer cores with 128-tap resolution
• SPI serial interface supporting clock frequencies up to 10 MHz
• Low power consumption suitable for battery-operated applications
• Wide single-supply voltage operation from 1.2 V to 5.5 V

Digital Potentiometers Applications

• High-performance analog-to-digital conversion systems
• Programmable gain amplifier circuits
• Voltage reference adjustment networks
• Sensor signal conditioning interfaces

Digital Potentiometers Procurement Notes

Verify the specific suffix T7A corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the volatile memory characteristic aligns with system power management strategies, as wiper settings are lost during power cycles. Ensure the 16-UTQFN footprint matches the PCB layout constraints and thermal requirements of the target design environment.

Digital Potentiometers Selection Notes

Select this component when dual independent resistance adjustment is required within a compact surface-mount form factor. The SPI interface offers compatibility with standard microcontroller peripherals, simplifying firmware integration compared to parallel or I2C alternatives. Consider the 100 kΩ resistance value against load impedance requirements to ensure adequate signal integrity and minimize noise coupling in sensitive analog signal paths.

Digital Potentiometers Part Context

This part belongs to the ISL23428 family of low-voltage digital potentiometers designed for precision analog control applications. The series provides multiple tap counts and interface options to accommodate various system architectures. The T7A suffix typically denotes specific packaging and shipping configurations standardized by the manufacturer for high-volume production environments.

Digital Potentiometers Replacement Considerations

Direct pin-compatible substitutes within the same family may offer different interface protocols or tap resolutions. Verify that alternative components support the required 1.2 V to 5.5 V operating range and maintain compatible SPI timing specifications. Check for any differences in wiper switch capabilities or power consumption metrics if system efficiency is critical.