Invention Application
- Patent Title: SELF BIASED DUAL MODE DIFFERENTIAL CMOS TIA FOR 400G FIBER OPTIC LINKS
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Application No.: US14987673Application Date: 2016-01-04
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Publication No.: US20160118947A1Publication Date: 2016-04-28
- Inventor: Rahul Shringarpure , Tom Peter Edward Broekaert , Gaurav Mahajan
- Applicant: INPHI CORPORATION
- Main IPC: H03F3/08
- IPC: H03F3/08 ; H03F1/02

Abstract:
A transimpedance amplifier (TIA) device. The device includes a photodiode coupled to a differential TIA with a first and second TIA, which is followed by a Level Shifting/Differential Amplifier (LS/DA). The photodiode is coupled between a first and a second input terminal of the first and second TIAs, respectively. The LS/DA can be coupled to a first and second output terminal of the first and second TIAs, respectively. The TIA device includes a semiconductor substrate comprising a plurality of CMOS cells, which can be configured using 28 nm process technology to the first and second TIAs. Each of the CMOS cells can include a deep n-type well region. The second TIA can be configured using a plurality CMOS cells such that the second input terminal is operable at any positive voltage level with respect to an applied voltage to a deep n-well for each of the plurality of second CMOS cells.
Public/Granted literature
- US09793863B2 Self biased dual mode differential CMOS TIA for 400G fiber optic links Public/Granted day:2017-10-17
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