US 12,273,120 B2
Apparatus for analog-to-digital conversion, systems for analog-to-digital conversion and method for analog-to-digital conversion
Martin Clara, Santa Clara, CA (US); Daniel Gruber, St. Andrae (AT); Christian Lindholm, Villach (AT); Michael Fulde, Weil (DE); and Giacomo Cascio, Villach (AT)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jun. 25, 2021, as Appl. No. 17/358,084.
Prior Publication US 2022/0416800 A1, Dec. 29, 2022
Int. Cl. H03M 1/12 (2006.01); H03M 1/14 (2006.01); H03M 1/36 (2006.01); H03M 1/38 (2006.01)
CPC H03M 1/121 (2013.01) [H03M 1/1245 (2013.01); H03M 1/145 (2013.01); H03M 1/38 (2013.01); H03M 1/1215 (2013.01); H03M 1/361 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for analog-to-digital conversion, comprising:
a first analog-to-digital converter, ADC, configured to;
receive an input signal;
sample the input signal at a first sampling frequency; and
convert the input signal to a sequence of M-bit digital values;
a second ADC comprising a plurality of time-interleaved sub-ADCs each being configured to:
receive the input signal and at least one M-bit digital value of the sequence of M-bit digital values;
sample the input signal at a second sampling frequency being lower than the first sampling frequency; and
convert the input signal to a respective sequence of B-bit digital values using the at least one M-bit digital value of the sequence of M-bit digital values, wherein M and B are integers with M<B.