US 12,334,945 B2
Time-interleaved analog to digital converter based on flash analog to digital conversion
Shih-Hsiung Huang, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed on Apr. 28, 2023, as Appl. No. 18/140,746.
Claims priority of application No. 111137115 (TW), filed on Sep. 29, 2022.
Prior Publication US 2024/0113720 A1, Apr. 4, 2024
Int. Cl. H03M 1/08 (2006.01); H03M 1/00 (2006.01); H03M 1/10 (2006.01)
CPC H03M 1/08 (2013.01) [H03M 1/002 (2013.01); H03M 1/10 (2013.01); H03M 1/1009 (2013.01); H03M 1/1023 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A time-interleaved analog to digital converter, comprising:
a plurality of capacitor array circuits configured to sequentially sample an input signal and generate a plurality of first residue signals according to a plurality of first quantization signals;
a flash analog to digital converter circuitry configured to sample the input signal and sequentially generate the plurality of first quantization signals;
a plurality of first transfer circuits configured to sequentially transfer the plurality of first residue signals from the plurality of capacitor array circuits according to a plurality of first control signals;
a converter circuitry configured to perform a noise shaping signal conversion according to a first signal in the plurality of first residue signals and a second signal in plurality of second residue signals, in order to generate a second quantization signal;
a plurality of second transfer circuits configured to sequentially transfer a plurality of second residue signals from the plurality of capacitor array circuits to the converter circuitry according to a plurality of second control signals, wherein the plurality of capacitor array circuits further generate the plurality of second residue signals in response to the noise shaping signal conversion; and
an encoder circuit configured to generate a digital output according to a second quantization signal and a corresponding signal of the plurality of first quantization signals.