| 摘要 |
<p>An integrated circuit comprising a substrate with analog (13) and digital (12) sub-circuits provided with different supply terminals, including Vdd (16) and Vss (17) supply terminals for the analog part and a Vdd (14) supply terminal for the digital part, as well as a common substrate terminal or ground terminal (15). In the substrate, an element (20) with diode function is formed between the Vdd and Vss supply terminals of an analog sub-circuit, which element with diode function comprises a cathode part (21) connected to the Vdd supply terminal and an anode part (22) connected to the Vss supply terminal of the relevant analog sub-circuit. The supply terminals are further connected to the substrate terminal or ground terminal via over-voltage protection circuits (18, 23, 24), said over-voltage protection circuits for the relevant analog sub-circuit being embodied so as to be active only for positive over-voltages on a supply terminal (14, 16, 17) with respect to the substrate (11, 15).</p> |
