	US 11,705,916 B2
	Differential source follower with current steering devices
Yitzhak Elhanan Schifmann, Beit Horon (IL); Yoel Krupnik, Jerusalem (IL); and Ariel Cohen, Modiin-Makkabbim-Reut (IL)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Apr. 11, 2022, as Appl. No. 17/717,558.
Application 17/717,558 is a division of application No. 16/985,104, filed on Aug. 4, 2020, granted, now 11,329,662.
Application 16/985,104 is a continuation of application No. 16/285,060, filed on Feb. 25, 2019, granted, now 10,742,227, issued on Aug. 11, 2020.
Prior Publication US 2022/0239305 A1, Jul. 28, 2022
Int. Cl. H03M 1/12 (2006.01); H03F 3/213 (2006.01); H03F 3/68 (2006.01); H03M 1/38 (2006.01); H04B 1/16 (2006.01); G11C 27/02 (2006.01)

CPC H03M 1/121 (2013.01) [G11C 27/02 (2013.01); H03F 3/213 (2013.01); H03F 3/68 (2013.01); H03M 1/1245 (2013.01); H03M 1/38 (2013.01); H04B 1/16 (2013.01); H03F 2200/129 (2013.01); H03F 2200/231 (2013.01); H03F 2200/267 (2013.01); H03F 2200/69 (2013.01)]

16 Claims

1. An apparatus comprising:

an analog front-end;

first track and hold circuitry coupled to an output of the analog front-end; and

a buffer coupled to an output of the first track and hold circuitry, wherein the buffer comprises a differential source follower and a bias generator, the differential source follower comprises first and second halves, and the bias generator is to bias the first and second halves of the differential source follower with a bias feedback loop, wherein:

the first half of the differential source follower comprises, as a first input, a first output of the first track and hold circuitry;

the second half of the differential source follower comprises, as a second input, a second output of the first track and hold circuitry; and

the apparatus further comprises second track and hold circuitry coupled to a first output of the first half of the differential source follower and to a second output of the second half of the differential source follower.