| 摘要 |
The device has an analogue switch (54) and a digital circuit (64), both formed on a single IC chip with a junction point connected to an external circuit. A first voltage source is connected to an input connection of the analogue switch, in which the output is connected to the junction. A second voltage source supplies the digital circuit, whose input or output is effectively connected to the junction. A device (50)for controlling the voltage applied to the blocking gate is connected to an analogue switch blocking gate and controls a voltage that is applied to the blocking gate, in response to a mode control signal indicating whether the analogue switch or digital circuit is activated.
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