公开(公告)号：US20240339977A1

公开(公告)日：2024-10-10

申请号：US18498492

申请日：2023-10-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Dimitar Trifonov ,  Chao-Hsiuan Tsay ,  Chase Puglisi

IPC: H03F3/45

CPC classification number: H03F3/45381 ,  H03F3/45636 ,  H03F2203/45008

Abstract: In some examples, an amplifier includes a pair of input differential transistors a pair of feedback transistors, a pair of current sources, a pair of gain setting resistors, and a tail current transistor. Control terminals of the feedback transistors are respectively coupled to first terminals of the input differential transistors. The pair of current sources are respectively coupled to the control terminals of the feedback transistors and the first terminals of the input differential transistors. The pair of gain setting resistors have first terminals that are respectively coupled to the second terminals of the input differential transistors. The pair of gain setting resistors have second terminals that are coupled to one another. The tail current transistor has a first terminal coupled to the second terminals of the gain setting resistors and a second terminal coupled to a DC supply.

公开(公告)号：US12081182B2

公开(公告)日：2024-09-03

申请号：US18049831

申请日：2022-10-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ankit Khanna ,  Dimitar Trifonov ,  Partha Basu ,  Chase Puglisi

IPC: G11C7/06 ,  H02P23/14 ,  H03F3/45 ,  H03K3/037 ,  H03K19/20

CPC classification number: H03F3/45475 ,  G11C7/06 ,  H02P23/14 ,  H03K3/037 ,  H03K19/20 ,  H03F2200/462 ,  H03F2200/474

Abstract: A current sense amplifier includes a first amplifier stage, a second amplifier stage, a switch, and a common-mode transient detector. The first amplifier stage has a first amplifier output, a second amplifier output, a first amplifier input, and a second amplifier input. The second amplifier stage has a third amplifier input coupled to the first amplifier output, and a fourth amplifier input coupled to the second amplifier output. The switch has a switch control input, a first switch terminal coupled to the third amplifier input, and a second switch terminal coupled to the fourth amplifier input. The common-mode transient detector circuit has a detector output, a first detector input and a second detector input. The detector output is coupled to the switch control input. The first detector input is coupled to the first amplifier input. The second detector input is coupled to the second amplifier input.

公开(公告)号：US20240178807A1

公开(公告)日：2024-05-30

申请号：US18070215

申请日：2022-11-28

Applicant: Texas Instruments Incorporated

Inventor： Ankit Khanna ,  Dimitar Trifonov ,  Partha S. Basu ,  Chase Puglisi

IPC: H03F3/45 ,  H03F1/08

CPC classification number: H03F3/45475 ,  H03F1/086 ,  H03F2200/261 ,  H03F2200/462 ,  H03F2203/45134

Abstract: An example apparatus includes: a transconductance stage including: a fully differential amplifier configured to generate a differential current based on a voltage input; and a transistor configured to be controlled by an output of the fully differential amplifier and source current from an input of the fully differential amplifier; and a transimpedance stage coupled to the transconductance stage, the transimpedance stage including: resistor circuitry configured to convert the differential current into a differential voltage using a first resistance, a second resistance, and a third resistance; and a differential amplifier configured to convert the differential voltage to a single-ended voltage, which represents the voltage input.