X9260 Dual Supply Low Power 256-Tap SPI Bus Dual Digitally-Controlled (XDCP) Potentiometers

Category: Converters, Electronics, Intersil Corporation

Description

The Intersil X9260 is a dual digitally controlled potentiometer (XDCP) integrated circuit (IC) designed for various applications, including control, parameter adjustments, and signal processing. Each potentiometer of the X9260 comprises 255 resistive elements arranged in a series, with wiper terminal connections at each tap point. User control of the wiper position is facilitated through the Serial Peripheral Interface (SPI) bus.

Key Features

The device is characterized by several features that enhance its functionality and usability:

Dual potentiometers with separate controls for each.
High-resolution control with 256 resistor taps per potentiometer, offering 0.4% resolution.
SPI serial interface that supports write, read, and transfer operations for the potentiometer’s wiper.
Low typical wiper resistance of 100Ω at ±5V.
Four nonvolatile data registers per potentiometer for storing multiple wiper positions.
Power-on recall feature which loads saved wiper position upon device startup.
Efficient power management with a standby current of less than 5µA and an operating voltage range from 2.7V to 5.5V.
Endurance of 100,000 data changes per bit per register, with data retention guaranteed for 100 years.
Available in 24-lead SOIC and TSSOP packages.
Support for low power CMOS technology and a Pb-Free plus anneal option compatible with RoHS standards.

Functional Diagram and Interface Control

The functional diagram presents a simplified overview of the XDCP’s internal structure and interface control. Essential components include the Wiper Counter Registers (WCR) and the Data Registers (DR0-DR3), which interact with the SPI Bus for communication and control. It indicates the capability to handle write, read, and transfer instructions, as well as execute incremental or decremental commands within the IC’s architecture.

Applications

As a versatile component, the X9260 XDCP can function either as a three-terminal potentiometer or a two-terminal variable resistor. Its design is particularly suited for versatile applications requiring precise electronic control.

Handling Precautions

The X9260 is sensitive to electrostatic discharge, and it requires adherence to proper handling and IC procedures to maintain integrity and functionality.

Patent and trademark information, along with copyright notices, affirm the proprietary design and the unique features of the Intersil X9260. Users are encouraged to follow all standardized protocols when integrating this IC into their systems.