| 摘要 |
A filtering device based on an active transconductance filter includes auto-calibration means, the principle of calibration consisting in slaving the power supply current for the filter as a function of the phase shift between a second signal shifted by a first predetermined phase shift with respect to a periodic reference signal, and the output signal of the filter in response to a first signal shifted by a second predetermined phase shift with respect to the periodic reference signal, the slaving tending to minimize the phase shift between the output signal of the filter and the second signal.
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