ON BOARD INTEGRATED CIRCUIT CHIP SIGNAL SOURCE

摘要

ON BOARD INTEGRATED CIRCUIT CHIP SIGNAL SOURCE An on-board integrated circuit chip signal source which allows operation of the chip from previously incompatible and excessively high amplitude signal sources, and as well powers the chip from such sources as the input signal, a clock, etc. The invention utilizes a 3 plate capacitor, with the bottom plate formed of a heavily doped region of the silicon substrate. Signal is applied between the outside plates of the capacitor and a proportion of the signal is received between the centre plate and one of the outside plates. A diode clamp connected between the centre plate and a reference potential fixes the derived peak and average signal levels.