Invention Grant
- Patent Title: Broadband differential trans-impedance amplifier (TIA)
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Application No.: US15442801Application Date: 2017-02-27
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Publication No.: US10020784B1Publication Date: 2018-07-10
- Inventor: Kenn Christensen , Steen Bak Christensen
- Applicant: Mellanox Technologies Denmark Aps
- Applicant Address: DK Roskilde
- Assignee: MELLANOX TECHNOLOGIES DENMARK APS
- Current Assignee: MELLANOX TECHNOLOGIES DENMARK APS
- Current Assignee Address: DK Roskilde
- Agency: D. Kligler IP Services Ltd.
- Main IPC: H03F3/08
- IPC: H03F3/08 ; H03F3/45

Abstract:
A TIA includes first and second input terminals for differentially receiving an input current signal, and first and second amplification circuits. The first amplification circuit includes a first Alternating-Current (AC) path and a first Direct-Current (DC) path that are configured to amplify in parallel respective first AC and DC components of the input current signal flowing via the first input terminal, and a first combiner configured to sum the amplified first AC and DC components. The second amplification circuit includes a second AC path and a second DC path that are configured to amplify in parallel respective second AC and DC components of the input current signal flowing via the second input terminal, and a second combiner configured to sum the amplified second AC and DC components. First and second output terminals are configured for outputting an output voltage signal formed between outputs of the first and second combiners.
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