The X9279 is a single, digitally controlled potentiometer (XDCP) integrated circuit that provides a 256-tap resistor array with a 2-Wire bus interface.
Key Features:
256 resistor taps, 2-Wire serial interface, 16 non-volatile data registers, power-on recall, and low power CMOS operation.
Applications:
The X9279 can be used in a variety of applications, including control, parameter adjustments, and signal processing, such as:
Varying the gain of a voltage amplifier, providing programmable DC reference voltages, controlling the volume in audio circuits, and trimming out the offset voltage error in a voltage amplifier circuit.
System-level applications include adjusting the contrast in LCD displays, controlling the power level of LED transmitters, and setting the operating points in temperature control systems.
Manual:
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