Memory Type:	Non-Volatile
Base Part Number:	X9418
Supplier Device Package:	24-SOIC
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C
Resistance - Wiper (Ohms) (Typ):	40
Temperature Coefficient (Typ):	±300 ppm/°C
Tolerance:	±20%
Features:	Selectable Address
Voltage - Supply:	±5V
Series:	XDCP™
Interface:	I²C
Resistance (Ohms):	10k
Number of Taps:	64
Number of Circuits:	2
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

Data acquisition refers to the process in which data is collected from various sources and used for decision making and analysis. Digital potentiometers are used to measure the electrical values of a voltage or current on a single point connection.They have great accuracy, good stability and a wide range of resistance values. X9418WS24T1 is a three-terminal digital potentiometer belonging to the X94XX family of products developed by XICOR. The X94XX family includes versatile products that provide both digital and analog functions while requiring few external components.

X9418WS24T1 Application Fields

The X9418WS24T1 offers a wide range of possible applications in many different fields. In automotive electronics, X9418WS24T1 can be used for controlling the engine’s idle speed, fuel injection, and anti-lock braking systems. It can also be used for controlling audio volume and system settings in car audio systems. In instrumentation and medical equipment, X9418WS24T1 can be used for controlling the frequency, phase and gain of medical imaging systems, as well as for controlling the output of analog to digital converters in medical applications. In consumer electronics, X9418WS24T1 can be used for controlling the brightness of LCD displays, as well as volume and system settings in television and radio receivers.

X9418WS24T1 Working Principle

The working principle of the X9418WS24T1 is based on a 3-terminal resistor network. It consists of a central wiper which is connected to either terminal independently through a series of resistors. The wiper’s position can be changed digitally by controlling the output of the chip. When the digital signal supplied to the chip is changed, the position of the wiper is adjusted accordingly. This allows for the resistance between the two terminals to be adjusted in a precise and repeatable manner.The X9418WS24T1 is powered by an external voltage supply and communicates with a microcontroller or other digital signal processor using an SPI interface. The chip contains an on-chip oscillator, an internal address latch, and an 8-bit DAC. The on-chip oscillator provides the clock signal for the SPI interface which allows for smooth and accurate communication between the chip and the microcontroller. The internal address latch allows for multiple-byte write operations to the chip, aiding in fast data transmission. The integrated DAC provides a high precision voltage reference for the output voltage.

Conclusion

In conclusion, the X9418WS24T1 is a three-terminal digital potentiometer developed by XICOR. It is suitable for a wide variety of applications including automotive electronics, instrumentation and medical equipment, and consumer electronics. It works based on a 3-terminal resistor network and is powered by an external voltage supply. It can communicate with a microcontroller using an SPI interface and offers smooth and accurate communication. It is an ideal solution for applications requiring digital potentiometers with high accuracy and low power consumption.

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