X9401 Quad 64-Tap Digitally Controlled Potentiometer Data Sheet

Category: Converters, Electronics, Intersil Corporation

Overview of X9401

The X9401 datasheet introduces a quad, 64 tap, digitally controlled potentiometer (XDCP) encapsulated within a CMOS integrated microcircuit. Each of the four potentiometers offers 64 taps, with nonvolatile storage for the wiper position and individual nonvolatile data registers.

Key Features

The data sheet highlights key features such as:

Quad Separate Pots: Four independently controllable potentiometers.
Nonvolatile Storage: Keeps the wiper position saved across power cycles.
SPI Serial Interface: Simplified communication via a standard protocol.
Low Power Consumption: Maximum operating current of 700µA and standby current under 3µA.
Wide Voltage Range: Operational from 2.7V to 5V.
Packaging: Available in 24 Ld SOIC and 24 Ld TSSOP packages, with RoHS compliance.

Functional Description

The datasheet details the functionality of the X9401, explaining that users can manipulate the wiper position via the SPI bus interface, adjusting the potentiometer settings through volatile Wiper Counter Registers and nonvolatile Data Registers. The device may function as either a three-terminal potentiometer or a two-terminal variable resistor.

Applications & Usage

Suitable for a variety of applications, the X9401 can be employed in control systems, parameter adjustments, and signal processing, indicating its versatility in electronic circuit design.

Ordering Information & Pin Descriptions

The datasheet provides detailed ordering information including the temperature range, packaging options, part numbers and acceptable voltage limits. It also cautions users about the possible sensitivity to electrostatic discharge and outlines the pin descriptions for interfacing, including SO (Serial Output), SI (Serial Input), SCK (Serial Clock), and CS (Chip Select).

Responsibility and Recommendations

Intersil, the producer of the X9401, emphasizes the compliance to RoHS standards and recommends using specific product revisions for new designs. They elucidate on the Pb-free packaging, relaying the suitability for both SnPb and Pb-Free soldering processes, and offer handling guidelines for this electrostatically sensitive device.