US 12,228,958 B2
Voltage reference temperature compensation circuits and methods
Amit Kundu, Hsinchu (TW); and Jaw-Juinn Horng, Hsinchu (TW)
Assigned to Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Jul. 27, 2023, as Appl. No. 18/359,931.
Application 18/359,931 is a continuation of application No. 17/873,281, filed on Jul. 26, 2022, granted, now 11,755,051.
Application 17/873,281 is a continuation of application No. 17/363,142, filed on Jun. 30, 2021, granted, now 11,474,552, issued on Oct. 18, 2022.
Claims priority of provisional application 63/156,402, filed on Mar. 4, 2021.
Prior Publication US 2023/0367352 A1, Nov. 16, 2023
Int. Cl. G05F 3/26 (2006.01); G05F 1/46 (2006.01); G05F 1/567 (2006.01)
CPC G05F 3/262 (2013.01) [G05F 1/468 (2013.01); G05F 1/567 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit comprising:
a proportional-to-absolute temperature (PTAT) circuit;
a complementary-to-absolute temperature (CTAT) circuit, wherein the PTAT circuit and the CTAT circuit include a common transistor and are configured to generate a reference voltage in response to an input;
an input node configured to receive the input; and
a first resistor coupled between the common transistor and the input node.