High switching speed differential amplifier
AssigneeFrontend Analog and Digital Technology Corporation
InventorWei-Cheng Lin
Life of this patent
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Abstract
A high switching speed differential amplifier comprises a differential pair, a first and a second active loads, and a current source, in which the differential pair is composed of a pair of MOS transistors to receive a pair of differential signals from a first and a second inputs. The first active load is connected to an output of the first MOS transistor and includes a first and a second paths switched therebetween in response to the first input. The second active load is connected to an output of the second MOS transistor and includes a third and a fourth paths in response to the second input.
Claims10
A high switching speed differential amplifier comprising:
- a differential pair composed of a first and a second MOS transistors for being connected with a pair of differential signals from a first and a second inputs, respectively;
- a current source provided for the differential pair;
- a first active load connected to an output of the first MOS transistor and including a first and a second paths switched therebetween in response to the first input;
- and
- a second active load connected to an output of the second MOS transistor and including a third and a fourth paths switched therebetween in response to the second input.
A high switching speed differential amplification method for amplifying a pair of differential signals from a first and a second inputs, the method comprising the steps of:
- connecting the first and second inputs to inputs of a first and a second MOS transistors, respectively, in a differential pair;
- and
- connecting a third and a fourth MOS transistors to the output of the first MOS transistor and a fifth and a sixth MOS transistors to the output of the second MOS transistor;
- wherein the third and fourth MOS transistors are switched therebetween in response to the first input, and the fifth and sixth MOS transistors are switched therebetween in response to the second input.
Dependencies are inferred from the claim text.