Series:	XDCP™
Packaging:	Tube
Part Status:	Obsolete
Taper:	Linear
Configuration:	Potentiometer
Number of Circuits:	2
Number of Taps:	64
Resistance (Ohms):	50k
Interface:	I²C
Memory Type:	Non-Volatile
Voltage - Supply:	5V
Features:	Selectable Address
Tolerance:	±20%
Temperature Coefficient (Typ):	±300 ppm/°C
Resistance - Wiper (Ohms) (Typ):	40
Operating Temperature:	0°C ~ 70°C
Package / Case:	20-DIP (0.300", 7.62mm)
Supplier Device Package:	20-PDIP
Base Part Number:	X9221A

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X9221AUP Application Field and Working Principle

Introduction

Digital Potentiometers (DIGIPOTS) are electrical components that, when configured, allow the user to change the resistance of an electric circuit, as an analog potentiometer (a resistive device in which a rotating contact arm is used to adjust the resistance between two terminals) would. A Digital Potentiometer is an electronic component used to create adjustable voltage dividers, such as for potentiometer applications. The X9221AUP is a type of DIGIPOT that is digital in nature and is used to adjust voltage dividers and resister values.

Applications and Characteristics

The X9221AUP is low-voltage, side-actuated non-volatile digital potentiometer with 14-bits resolution and SIL packaging. It is specifically designed for high-precision servo-motor and audio control applications. The X9221AUP requires only two digital pins for its operation, allowing for easy interface with microcontrollers. Its 0.4dB of inherent noise makes it suitable for audio applications as well. Additionally, its non-volatile memory allows it to retain settings even after power has been removed from the system.

Working Principle

The X9221AUP operates by sending digital signals (such as serial strings) from microcontroller pins to the SDS or CSD pin of the DIGIPOT through a parallel I/O port. The X9221AUP then utilizes inbuilt logic to interpret and calculate the received signals, thereby adjusting the internal resistance. The X9221AUP also provides overload protection and internal temperature compensation, making it suitable for a variety of industrial applications.

Conclusion

The X9221AUP is a low-voltage, side-actuated non-volatile digital potentiometer specifically designed for high-precision servo-motor and audio control applications. It requires only two digital pins for its operation, and is capable of retaining settings even after power has been removed from the system. Additionally, its functionalities such as overload protection and internal temperature compensation make the X9221AUP suitable for a variety of industrial applications.

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