US 12,081,178 B2
Amplifier with VCO-based ADC
Martin Kinyua, Cedar Park, TX (US); and Eric Soenen, Austin, TX (US)
Assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Jul. 20, 2022, as Appl. No. 17/869,111.
Application 17/869,111 is a continuation of application No. 16/731,256, filed on Dec. 31, 2019, granted, now 11,424,724.
Prior Publication US 2022/0368292 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/217 (2006.01); H03F 1/02 (2006.01); H03F 3/185 (2006.01); H03M 3/00 (2006.01)
CPC H03F 3/2175 (2013.01) [H03F 1/0233 (2013.01); H03F 3/185 (2013.01); H03M 3/424 (2013.01); H03M 3/494 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An amplifier, comprising:
an input filter configured to receive an analog error signal;
a voltage controlled oscillator (VCO) having an input terminal connected to an output of the input filter;
a phase quantizer connected to an output terminal of the VCO;
a digital to analog converter having an input terminal connected to an output terminal of the phase quantizer and an output terminal connected to the input filter;
a digital control circuit having an input terminal connected to the output terminal of the phase quantizer;
an output driver having an input terminal connected to an output terminal of the digital control circuit and configured to generate an amplified output signal.