US 12,068,730 B2
Trimming operational amplifiers
Vadim Valerievich Ivanov, Tucson, AZ (US); Munaf Hussain Shaik, Tucson, AZ (US); Srinivas Kumar Pulijala, Tucson, AZ (US); Patrick Forster, Freising (DE); and Jerry Lee Doorenbos, Tucson, AZ (US)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on May 4, 2021, as Appl. No. 17/307,327.
Prior Publication US 2022/0360239 A1, Nov. 10, 2022
Int. Cl. H03F 3/45 (2006.01); H03M 1/38 (2006.01); H03M 1/66 (2006.01); H03F 3/21 (2006.01)
CPC H03F 3/45475 (2013.01) [H03M 1/38 (2013.01); H03M 1/66 (2013.01); H03F 3/211 (2013.01); H03F 2200/129 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A system comprising:
a plurality of operational amplifiers, each operational amplifier of the plurality of operational amplifiers having individually adjustable operational parameters, and
a trimming circuit coupled to the plurality of operational amplifiers;
wherein the trimming circuit comprises successive approximation register (SAR) logic;
wherein the SAR logic is configured to determine for each operational amplifier an associated memory value;
wherein the trimming circuit is configured to change the adjustable operational parameters of each operational amplifier based on the associated memory values.