ISL23428WFRUZ-T7A

Digital Potentiometers Overview

The ISL23428WFRUZ-T7A is a volatile, low voltage, low noise, and low power dual digitally controlled potentiometer (DCP) featuring an SPI Bus interface. It integrates two independent DCP cores with wiper switches and control logic on a CMOS integrated circuit. The device offers 128 taps for precise resistance adjustment within a 10kΩ nominal value. It operates across a supply voltage range of 1.2V to 5.5V or 1.7V to 5.5V, depending on the specific configuration. The component exhibits a typical temperature coefficient of 125ppm/°C and maintains a tolerance of ±20%. Designed for robust performance, it supports an operating temperature range from -40°C to +125°C and is housed in a compact UTQFN-16 package measuring 2.6x1.8mm.

Digital Potentiometers Feature Summary

• Integrates two independent digitally controlled potentiometer cores with dedicated wiper switches and control logic
• Features a serial SPI Bus interface for digital control of resistance tap positions
• Designed for low voltage operation with low noise and low power consumption characteristics
• Utilizes a compact UTQFN-16 surface mount package suitable for space-constrained applications

Digital Potentiometers Applications

• Programmable gain amplifiers requiring digital resistance adjustment
• Voltage reference trimming in precision measurement systems
• Audio volume control circuits utilizing digital interfaces
• Sensor biasing and calibration in industrial instrumentation

Digital Potentiometers Procurement Notes

Verify the exact suffix T7A against the manufacturer's official ordering guide to confirm tape and reel specifications. Ensure the selected variant matches the required voltage range and package dimensions. Cross-reference the RoHS compliance status and lead-free plating details with current datasheets. Confirm availability through authorized distributors to avoid counterfeit components. Validate that the procurement order specifies the correct part number including all identifying suffixes.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital potentiometer with SPI compatibility is required. Consider the 128-tap resolution for applications needing moderate adjustment granularity. Evaluate the volatile nature of the memory if non-volatile storage is necessary for power-down retention. Assess the 10kΩ resistance value against circuit impedance requirements. Verify the operating temperature range meets the environmental conditions of the target application.

Digital Potentiometers Part Context

This part belongs to the ISL234xx series of digitally controlled potentiometers from Renesas Electronics. The series typically includes variants with different tap counts and channel configurations. The ISL23428 specifically denotes a dual-core device with 128 taps per channel. It complements other analog signal chain products offered by the manufacturer, focusing on programmable resistance solutions for embedded systems.

Digital Potentiometers Replacement Considerations

Check for direct cross-references in the manufacturer's documentation. Verify pinout compatibility and electrical parameters such as resistance value and voltage range before substituting. Ensure the replacement part supports the same SPI interface protocol and package footprint.