Taiwan Semiconductor Manufacturing Comp. Ltd.

TSMC China Company Limited

Yongliang Jin

Yaqi Ma

Wei Yu Li

CunCun Chen

Kai Zhou

A circuit (to shape a follower voltage for a follower circuit) includes a tie-low circuit and an anti-noise circuit. The tie-low circuit is connected between a follower node and a first reference voltage. The tie-low circuit is responsive to a second reference voltage. The follower node is connectable to the follower circuit. The anti-noise circuit is connected between the follower node and the second reference voltage. The anti-noise circuit is configured to protect the follower voltage at the follower node from otherwise being distorted by a noise voltage being coupled capacitively to the follower node.

Semiconductor circuit including a tie-low circuit and method of fabricating same

A circuit includes an output node and an amplifier and first and second branches coupled between power supply and reference nodes. The first branch includes a first switching device coupled between a first amplifier input and the reference node, the second branch includes a second switching device coupled between the output node and a second amplifier input, and a third switching device is coupled between the power supply and output nodes. Responsive to a first voltage level on the power supply node, each of the first and second switching devices is switched off and the third switching device is switched on, and responsive to a second voltage level on the power supply node greater than the first voltage level, each of the first and second switching devices is switched on and the third switching device is switched off.

Dual mode supply circuit and method

A circuit includes a first passive device between supply and bias nodes, a first switching device and a second passive device between the bias and a reference node, a transistor between the supply and an output node, a third passive device and a second switching device between the output and a feedback node, a fourth passive device between the feedback and reference nodes, a third switching device between the supply and output nodes, and an amplifier controlling the transistor based on bias node and feedback node voltages. In a first mode, the first and second switching devices are off, the third switching device is on, and the supply node receives a first voltage level. In a second mode, the first and second switching devices are on, the third switching device is off, and a second voltage level greater than the first voltage level is received on the supply node.

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Hsinchu, Taiwan

Yongliang Jin