X9259 Quad Digitally-Controlled Potentiometers Data Sheet

Category: Converters, Electronics, Intersil Corporation

The X9259 by Intersil is a monolithic CMOS integrated circuit featuring four digitally controlled potentiometers (XDCP), aimed at applications that require control, parameter adjustments, and signal processing. It is designed to offer precision through its 256 resistor taps which provide a 0.4% resolution, ensuring accurate control over the settings. The device connects to systems via a 2-wire serial interface that supports write, read, and transfer operations for the potentiometer wiper.

Each potentiometer comes with a volatile Wiper Counter Register (WCR) for the current position and four non-volatile Data Registers to store wiper positions that can be directly accessed by the user. Upon power-up, the device loads the default Data Register values to the WCRs for consistent startup configurations. Users can utilize the XDCP as either a three-terminal potentiometer or a two-terminal variable resistor.

Key features of the X9259 include:

Standby Current of less than 5µA
Vcc operation range from 2.7V to 5.5V
Options for 50kΩ and 100kΩ total resistance
100,000 data changes per bit per register endurance
Over 100 years of data retention
Availability in 24 Ld SOIC and 24 Ld TSSOP packages
Pb-Free Plus Anneal Available which is RoHS compliant
The device can work with both single supply variants as well as the standard 5V supply

For choosing the appropriate part for specific requirements, the datasheet lists an extensive ordering information section with part numbers that vary by temperature range, Vcc limits, total resistance (Rtotal), package type, and whether it is Pb-free. The availability of the X9259 in multiple configurations, such as the X9259TS and X9259US series, allows for flexibility in design application and compliance with environmental standards.

CAUTION: It is imperative to handle the X9259 with care due to its sensitivity to electrostatic discharge, following proper IC Handling Procedures as noted in the datasheet.

Dated December 21, 2006, this FN8169.4 release detailing the X9259 serves as a comprehensive guide for engineers and designers in integrating the device into various systems.