Intersil X9268 Dual Supply Low Power 256-Tap 2-Wire Bus Digitally-Controlled Potentiometers

Category: Converters, Electronics, Intersil Corporation

Overview of the Intersil X9268

The Intersil X9268 is a dual digitally-controlled potentiometer (XDCP) that has been designed to operate on a low power supply with a 256-tap resistance array. It features a 2-wire bus interface for easy read, write, and transfer operations. Utilizing CMOS technology, the X9268 includes a volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0-DR3) which can be directly accessed by the user. The wiper’s position, determined by the WCR, is adjusted via the interface and can be stored in nonvolatile memory for recall upon power-up.

Key Features of the X9268

The XDCP comes with several key features that make it suitable for a range of applications including control, parameter adjustments, and signal processing. These features include:

– Availability in 50kΩ and 100kΩ end-to-end resistance versions
– Power-on Recall which automatically loads the saved wiper position on power-up
– Low standby current (< 5uA max), adding to its low power consumption merit
– Nonvolatile storage that can handle multiple wiper positions
– A 2-Wire Serial Interface that supports write, read, and transfer operations
– Operating voltage ranges of Vcc from +2.7V to +5.5V, and V- from -2.7V to -5.5V
– Compliance with Pb-Free and RoHS standards
– Wide operational temperature ranges, making it adaptable to various environments

– Reliability backed by endurance and data retention specifications: capable of 100 years of data retention with 100 uses per bit per register

Ordering Information and Packaging

The X9268 is available in various packaging options and configurations to suit different temperature ranges and voltage limit requirements. Ordering codes such as X9268TS24 for the +70 degrees Celsius range, and X9268US241 for the -40 to +85 degrees Celsius range indicate these variations. Package types include 24 Ld SOIC (Standard Outline Integrated Circuit) and 24 Ld TSSOP (Thin-Shrink Small Outline Package), identified by package drawing numbers such as M24.3 and MDPO044 respectively. Each package variation comes with options for standard or Pb-Free (lead-free) materials to support environmental compliance and sustainability goals.

Intersil incorporates special Pb-free material sets and plating finishes in these products, ensuring compatibility with both SnPb and Pb-free soldering operations, aligning with the Materials Declaration Management (MDM) classification at Pb-free peak reflow temperatures. These materials surpass the Pb-free requirements set by IPC/JEDEC J STD-020.

Important Notice

Users should be cautious due to the electrostatic discharge sensitivity of the devices, and follow proper handling procedures. Intersil Americas Inc.’s trademarks are acknowledged in their respective fields.