This is a digital potentiometer module X9C104 for microcontroller controlled circuits.
The X9C104 digital potentiometer module helps you simulate the mechanical control of a potentiometer. The integrated circuit contains 99 series-related resistors. With a microcontroller, you can control the module and select the place where the center pin of the "potentiometer" is connected, anywhere in the 100 points available (at the ends of the group or between the resistors).
The X9C104 potentiometer consists of inserting a hundred resistors with a 1K ohm value. With the pins we can select the number of resistors we want, so we can digitally vary the resistance of the potentiometer. The device dissipates a power of 10 mW and supports resistors with a maximum current of 4.4 mA.
This module has varied applications, can be used as resistive divider, variable resistance, these are used in different schemes with operational amplifiers or other analog circuits.
• VCC - 5V supply
These digital potentiometers are used in the industrial field. For example, analog signals generated by various sensors have to be calibrated using Wheatstone bridges made up of variable resistors. Using digital potentiometers and microcontrollers, signal self calibration systems can be implemented. You can use the X9C104 module to build a software controlled voltage source or a variable amplifier amplifier controlled by the Arduino plate.
For more details on the control mode, see the enclosed datasheet.