X9428WS16

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Data acquisition refers to the process of retrieving data from an analog environment and converting it into a digital format for further analyses. Digital potentiometers, also known as digitally controlled potentiometers, are devices that perform data acquisition by converting analog signals into digital values. The X9428WS16 is a digital potentiometer designed by Linear Technology, one of the industry leaders in developing data conversion electronics.

The X9428WS16 is a precision-molded, low profile, 16-bit digital potentiometer. It has 256 taps with the nominal setting at 8-bit resolution and the tap setting at 4-bit resolution. The device has a low current consumption (less than 4 mA) and high resolution (16 bits). With its small size and low power consumption, the X9428WS16 is an ideal solution for data acquisition in small, low power systems.

The X9428WS16 is suitable for a variety of applications, including motor control, transducer feedback loop control, and ballast controls. The device is also useful for setting the bias of light emitting diode (LED) arrays or even for providing temperature-dependent calibration or adjustment of gain or other parameters in electronic systems.

The working principle of the X9428WS16 is based on the modulation of a digitally-controlled voltage-to-current converter. Upon receiving a digital control signal, the converter generates an analog proportional current that is then sent to the wiper of the potentiometer. The proportion of current going to the wiper determines the tap setting of the potentiometer. By modulating the amount of current sent to the wiper, the tap setting can be precisely controlled.

The X9428WS16 also features an interface selector. The interface selector allows the user to select between two different control signals: analog voltage input or 3-wire digital serial interface. The analog voltage input (AVD) interface allows the device to be controlled directly with a low impedance voltage source. The 3-wire serial interface (SCL/SDA) is a more versatile interface that allows for bidirectional communication and enables daisy-chaining of multiple devices. The SCL/SDA interface also features a built-in self-protected circuit that prevents errors from external signals or noise.

The X9428WS16 is a versatile digital potentiometer suitable for a variety of data acquisition applications. With its low power consumption, low profile design, and precision-molded structure, the X9428WS16 is an ideal choice for systems requiring precise and reliable data acquisition.

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