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Active Programmable High Pass Filter
The WEA228HPFA18BT122G is an active High Pass filter with variable frequency and variable gain. The cutoff frequency can be set from 2 MHz to 27.5 MHz with a residual absolute error less than 9% over process after calibration. The maximum gain is 16 dB and can be programmed with 2.5 dB steps. The filter support bypass mode. The filter resistors are programmable to minimize process variation effect on frequency.
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Block Diagram of the Active Programmable High Pass Filter
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