X9241A Quad Digital Controlled Potentiometers (XDCP)

Category: Converters, Electronics, Intersil Corporation

Overview

The X9241A is a highly integrated device featuring four digitally controlled potentiometers (XDCP) on a single CMOS integrated microcircuit. This datasheet, with revision FN8164.7 dated August 17, 2015, provides technical details for the X9241A, manufactured by Intersil.

Functional Description

Each XDCP is comprised of 63 resistive elements in a series array, allowing for user control over the wiper’s position via a 2-wire bus interface. Value adjustments can be made by writing to the volatile Wiper Counter Register (WCR) or to any of the four associated nonvolatile Data Registers (DRO:DR3). Upon power-up, the contents of DRO are automatically recalled to the WCR. The X9241A’s wiper can be used in applications requiring either a three-terminal potentiometer or a two-terminal variable resistor.

Key Features

The device boasts an array of features:

Integration of four potentiometers within one package.
A 2-wire serial interface for communication.
Register-oriented operation allows direct reading, writing, and transfer of wiper positions.
Capacity to store up to four different positions per potentiometer.
Terminal voltages supported are +5V and -3.0V.
Options for cascade resistor arrays for higher resistance values.
Low power CMOS technology for energy efficiency.
High reliability with endurance rated at 100,000 data changes per bit per register, and a register data retention of 100 years.
16 bytes of nonvolatile memory for configuration storage.
Available resistor array values include 2kΩ, 10kΩ, 50kΩ, or combinations thereof, extendable up to 4kΩ to 200kΩ.
Resolution of 64 taps for each potentiometer.
Availability in 20 Ld plastic DIP, 20 Ld TSSOP, and 20 Ld SOIC packages.
Offered in a Pb-free, RoHS compliant version.

Applications and Packaging

Due to its versatile design, the X9241A can be utilized in a wide range of applications, including control systems, parameter adjustments, and signal processing tasks. Designers and engineers can select from various package types to best fit their project requirements.

Caution

The datasheet includes a caution note advising that the X9241A devices are sensitive to electrostatic discharge, and it suggests following proper IC handling procedures to avoid damage.

Block Diagram

The datasheet provides a block diagram illustrating the internal setup of the X9241A, including Vcc, Vss, the resistor array configuration for each of the four potentiometers, and the interface and control circuitry comprising SCL, SDA, and address pins Ao to A3.

Trademark and Copyright Information

The document asserts copyright ownership by Intersil Americas LLC for the years 2005, 2006, 2007, and 2015. It also identifies “Intersil” and associated designs as trademarks belonging to Intersil Corporation or its subsidiaries, with other trademarks acknowledged as property of their respective owners.