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Product Description:
In various bridge circuits, in order to adjust the bridge balance, potentiometers must be adjusted several times in order to make the bridge balance, in the process of use, when these potentiometers are affected by vibration, shock, temperature, humidity and other external environmental factors, the potentiometer position and parameters will change, resulting in system indicators change, to make the system to the original state, must be adjusted, which brings a lot of inconvenience to the use. For this reason, in the bridge arm circuit of the bridge, the use of array potentiometers and digital technology, not only to overcome the above shortcomings, but also can greatly improve the accuracy of the system.
X9C104 is a 100-order digital potentiometer, specifically x9c102/103/104/503 series, resistance range of 40R ~ 100K, X9C104 contains an internal array of 99 resistors, between each unit and two endpoints are tapped points visited by the sliding unit, the position of the sliding unit is controlled by three inputs CS, U/D and INC, but once position is selected, it can be stored in non-volatile memory and can be recalled after the next power-up.
Parameters:
Operating voltage (V): 5
Total resistance value: 100K ohm
End voltage(V):-5~5
Number of taps:100
Interface mode: CS, U/D, INC
Resistance increase mode: linear
Operating current(mA):3
Package/Temperature(C): 8SOIC-40~85
Description: Tap position is automatically saved when power is lost
Robert Jackson
Reviewed in the United States on March 16, 2025
Review of the X9C104 Digital Potentiometer ModuleThe X9C104 Digital Potentiometer Module is an intriguing piece of technology that caters to those in the electronics and prototyping communities. With its practical application for adjusting bridge balances, this module presents a versatile solution for various electronic projects where precision is crucial. Below, I discuss the features, operation, and overall functionality of the X9C104, detailing what makes it stand out and where it may fall short.Key Features Operating Voltage: The X9C104 operates at a standard voltage of 5V, making it highly compatible with common microcontroller platforms like Arduino, Raspberry Pi, and more. This compatibility allows for straightforward integration into existing projects without the need for complex power supply configurations. Resistance Range: The module boasts a resistance range from 40 Ohms to 100K Ohms, offering significant flexibility for a variety of applications. This range can accommodate both low and high resistance requirements, making it suitable for tasks such as signal conditioning and sensor interfacing. Non-volatile Memory: One of the standout features of the X9C104 is its ability to store the last set position in non-volatile memory. This means that even after power loss, the last selected resistance value can be recalled automatically upon the next start-up. This feature can save users time and effort during their projects, especially in applications where regular adjustments are made. Digital Control: The module leverages three control inputs: CS (Chip Select), U/D (Up/Down), and INC (Increment). This enables precise control over the tap position, allowing for gentle adjustments to resistance levels. The simplicity of this control scheme means that even novice users can easily employ it in various applications. Internal Resistor Array: The internal architecture of the X9C104 consists of 99 resistive elements, delivering smooth and accurate adjustments without the wear associated with traditional mechanical potentiometers. This design contributes to longevity and reliability, making it more attractive for long-term projects.Performance: When it comes to performance, the X9C104 excels at providing consistent and accurate resistance settings. Users have reported minimal issues with performance drift, which can often be a concern with digital potentiometers, especially in sensitive applications. The transition between resistor values is smooth, thanks to its digital nature.However, it is worth noting that the module is not suitable for high-current applications, as the output drive current is limited. Users should review their specific applications to ensure that the module's capabilities align with their performance needs.ApplicationsThe X9C104 is ideal for a range of applications. Its ability to adjust bridge balances makes it particularly useful in weighing scales, pressure sensors, and other precision measurement devices. Additionally, it can be effectively employed in audio applications, where fine-tuning resistance can significantly impact output quality.ConclusionOverall, the X9C104 Digital Potentiometer Module is a highly capable component for anyone involved in electronics and prototyping. With its appealing features such as a wide resistance range, robust digital control system, and non-volatile memory, it provides an effective solution for applications requiring precise adjustments. As long as users remain mindful of its limitations in high-current scenarios, the X9C104 offers a fantastic blend of performance, reliability, and ease of use that is hard to overlook. Whether you're a hobbyist or a professional engineer, this digital potentiometer module is certainly worth considering for your next project.
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