公开(公告)号：US20230291373A1

公开(公告)日：2023-09-14

申请号：US17690629

申请日：2022-03-09

Applicant: Analog Devices, Inc.

Inventor： Gregory Lawrence Disanto

IPC: H03G3/00 ,  H03F3/04 ,  H03G3/30 ,  H03M7/16

CPC classification number: H03G3/002 ,  H03F3/04 ,  H03G3/30 ,  H03M7/165 ,  H03G2201/103

Abstract: Techniques for setting a gain of an amplifier circuit in which the external resistor of the amplifier circuit is used to determine an internal gain setting to select. A voltage across the external resistor can be compared to an on-chip reference, and then used to program the desired gain. The techniques can mitigate or eliminate the need for a high-accuracy external resistor and can allow substantial improvements in initial gain accuracy and gain drift for existing boards and/or systems with only a bill of material change.

公开(公告)号：US11979125B2

公开(公告)日：2024-05-07

申请号：US17690629

申请日：2022-03-09

Applicant: Analog Devices, Inc.

Inventor： Gregory Lawrence Disanto

IPC: H03G3/30 ,  H03F3/04 ,  H03G3/00 ,  H03M7/16 ,  H03G1/00

CPC classification number: H03G3/002 ,  H03F3/04 ,  H03G3/30 ,  H03M7/165 ,  H03G1/0088 ,  H03G2201/103

Abstract: Techniques for setting a gain of an amplifier circuit in which the external resistor of the amplifier circuit is used to determine an internal gain setting to select. A voltage across the external resistor can be compared to an on-chip reference, and then used to program the desired gain. The techniques can mitigate or eliminate the need for a high-accuracy external resistor and can allow substantial improvements in initial gain accuracy and gain drift for existing boards and/or systems with only a bill of material change.