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US 9,866,184 B1Granted
Degenerated transimpedance amplifier with wire-bonded photodiode for reducing group delay distortion
AssigneeInternational Business Machines Corporation
InventorsWooram Lee, Jonathan E. Proesel
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Abstract
An integrated circuit includes a degeneration network configured to improve group delay across one or more variations, wherein the degeneration network includes a transimpedance amplifier with one or more degeneration inductors. The transimpedance amplifier further includes one or more transistors, and the one or more degeneration inductors are connected after at least one emitter of the one or more transistors.
Claims11
An integrated circuit comprising:
- a degeneration network configured to improve group delay across one or more variations;
- wherein the degeneration network comprises one or more degeneration inductors, and a transimpedance amplifier including the one or more degeneration inductors;
- wherein the one or more degeneration inductors are configured to produce a degeneration impedance;
- and
- wherein the transimpedance amplifier is operatively coupled to a tracking feedback loop through which an output of the transimpedance amplifier is monitored, and the degeneration network is tuned to adjust the degeneration impedance in response to the one or more variations.
2 more elements
Dependencies are inferred from the claim text.