US 12,425,276 B2
Equalization adaptation engine assisted baseline wander correction of data
Abishek Manian, San Jose, CA (US); and Amit Rane, Santa Clara, CA (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Jan. 31, 2022, as Appl. No. 17/588,706.
Prior Publication US 2023/0246884 A1, Aug. 3, 2023
Int. Cl. H04L 25/03 (2006.01); H03F 3/04 (2006.01); H03K 17/687 (2006.01); H04B 1/16 (2006.01)
CPC H04L 25/03057 (2013.01) [H03F 3/04 (2013.01); H03K 17/6872 (2013.01); H04B 1/16 (2013.01); H03F 2200/165 (2013.01)] 29 Claims
OG exemplary drawing
 
1. Baseline wander correction circuitry, comprising:
a first loop having a data input, a control signal input, a first output and a second output, the data input configured to receive an equalized data signal;
a second loop having first and second inputs coupled to the first and second outputs of the first loop, respectively, and having a control signal output coupled to the control signal input of the first loop; and
a feedback circuit having an input directly coupled to the second output of the first loop and having an output coupled to a feedback input of the first loop, the first loop including an amplifier having first and second inputs and an output, the second input of the amplifier coupled to the first output of the first loop, the first loop configured to generate a signal at the second output based on a signal received on the data input of the first loop, a signal generated at the output of the amplifier and a signal received on the feedback input of the first loop.