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STMicroelectronics Asia Pacific Pte. Ltd. (SG)
| STMicroelectronics Asia Pacific Pte. Ltd. (SG) Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110133813 | ANALOG SWITCH WITH A LOW FLATNESS OPERATING CHARACTERISTIC - An analog switch includes a transistor whose source connected to a signal input and whose drain is connected to a signal output. An output of a gate control circuit is connected to the transistor gate. A first input of the gate control circuit is connected to the source of the transistor. The gate control circuit responds to a logic transition of an enable signal received at a second input by pre-charging a substantially constant gate-to-source voltage across the transistor. This voltage is stored by a gate-to-source connected capacitor. In one steady-state logic condition of the enable signal, the gate control circuit operates to turn off the transistor. In another steady-state logic condition of the enable signal, the gate control circuit permits the signal received at the signal input to drive the gate of the transistor with a voltage offset by the substantially constant gate-to-source voltage stored on the capacitor. | 06-09-2011 |
| 20100321100 | NEGATIVE ANALOG SWITCH DESIGN - A transmission gate includes first and second MOS transistors of opposite conductivity type coupled in parallel with each other. Each transistor includes a body connection that is separately biased by corresponding first and second biasing circuits. The first biasing circuit generates a first bias voltage having a voltage level that is generated as a function of the signal at the first node and a first (for example, positive) reference voltage. The second biasing circuit generates a second bias voltage having a voltage level that is generated as a function of the signal at the first node and a second (for examples ground) reference voltage. | 12-23-2010 |