Method and system for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop
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United States of America Patent
Stats
-
Sep 19, 2017
Issued Date -
N/A
app pub date -
Jan 18, 2016
filing date -
Jan 16, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and systems for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop is disclosed and may include, in a transimpedance amplifier (TIA) circuit comprising a first TIA, a second TIA, and a third TIA, each comprising a configurable feedback impedance, and a control loop, where the control loop comprises a gain stage with inputs coupled to outputs of the first and second TIAs and an output coupled to the configurable feedback impedance of the second and third TIAs: configuring a gain level of the first TIA by configuring its feedback impedance, configuring a gain level of the third TIA by configuring a reference current applied to an input of the first TIA, and amplifying a received electrical signal to generate an output voltage utilizing the third TIA. The reference current may generate a reference voltage at one of the inputs of the gain stage.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- H03F Class
- 1076 Applications Filed
- 936 Patents Issued To-Date
- 86.99 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H03F Class
- 13.60 % this patent is cited more than
- 8 Age
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