公开(公告)号：US20200212854A1

公开(公告)日：2020-07-02

申请号：US16232494

申请日：2018-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Miaad SEYED ALIROTEH ,  Nirmal C. WARKE ,  David P. MAGEE ,  Ali KIAEI ,  Baher S. HAROUN ,  Ajay SINGHVI

IPC: H03F3/195 ,  G01S17/10 ,  G01S7/481

Abstract: A sensor circuit includes a sensor array. The sensor array includes a sensor row that includes a first sensor cell, a second sensor cell, and an output stage of a distributed amplifier circuit. The first sensor cell includes a first photodetector, and a first preamplifier stage of the distributed amplifier circuit. The first preamplifier stage is coupled to the first photodetector, and is configured to amplify a signal received from the first photodetector. The second sensor cell includes a second photodetector, and a second preamplifier stage of the distributed amplifier circuit. The second preamplifier stage is coupled to the second photodetector, and is configured to amplify a signal received from the second photodetector. The output stage of the distributed amplifier circuit is coupled to the first and second sensor cells, and is configured to amplify a signal received from the first preamplifier stage and the second preamplifier stage.