Bi-directional switch using series connected N-type MOS devices in parallel with series connected P-type MOS devices
AssigneeAnalog Devices, Inc.
InventorsDavid Aherne, John O Dunlea
Life of this patent
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Abstract
A bi-directional switch circuit includes a pair of N-type MOS devices connected in series with a common source terminal, and a pair of P-type MOS devices connected in series with a common source terminal. The series connected N-type devices are connected in parallel with the series connected P-type devices in a configuration that includes a first input/output (I/O) point of the switch circuit being connected to a drain of a first one of the N-type devices and a drain of a first one of the P-type devices. The parallel configuration also includes a second I/O point of the switch circuit being connected to a drain of a second one of the N-type devices and a drain of a second one of the P-type devices.
Claims9
A bi-directional switch circuit, comprising:
- a pair of N-type MOS devices connected in series through a first common source terminal;
- a pair of P-type MOS devices connected in series through a second common source terminal;
- and
- a parallel configuration including:
- a first input/output (I/O) point of the switch circuit, connected to a drain of a first one of the N-type devices and to a drain of a first one of the P-type devices;
- and
- a second I/O point of the switch circuit, connected to a drain of a second one of the N-type devices and to a drain of a second one of the P-type devices;
- wherein gates of the N-type devices and the P-type devices are connected to control signals, which control signals are derived from signals at the source terminals of respective ones of the N-type and P-type devices.
Dependencies are inferred from the claim text.