| 摘要 |
A semiconductor integrated circuit device comprises a first circuit block for processing a first signal, a second circuit block for processing a second signal different in frequency and/or signal level from the first signal, a conductor layer representing a substantially zero a.c. impedance and formed on a portion of a semiconductor chip between the first and second circuit blocks, and an isolation region formed in the portion of the semiconductor chip, the conductor layer and the isolation region being connected to each other through at least one contact hole provided between the first and second circuit blocks to prevent the mutual interference between the first and second circuit blocks.
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