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AssigneeAeroflex Colorado Springs Inc.
InventorsAlfio Zanchi, Shinichi Hisano
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A preamplifier includes a differential pair of transistors receiving a bias current having a differential input and a differential output, a first resistor coupled to a first differential output node, a first transistor having a current path coupled between the first resistor and a power supply, a second resistor coupled to the first differential output node, a second transistor having a current path coupled between the second resistor and the power supply, a third resistor coupled to a second differential output node, a third transistor having a current path coupled between the third resistor and the power supply, a fourth resistor coupled to the second differential output node, and a fourth transistor having a current path coupled between the fourth resistor and the power supply, wherein a source of the second and third transistors are coupled together.
A preamplifier comprising:
A preamplifier comprising:
A load circuit for a differential preamplifier comprising a plurality of parallel load paths, each load path comprising a serially-connected resistor and transistor, wherein the resistors are coupled to a differential node pair, a source of at least two transistors in two separate load paths are coupled together, a gate of the transistors in the load paths receives a common mode signal, and a drain of the transistors in the loads paths is coupled to a source of power supply voltage.
Dependencies are inferred from the claim text.