US 12,111,340 B2
Apparatus comprising a comparator device and method for operating an apparatus comprising a comparator device
Taha Ibrahim Ibrahim Soliman, Renningen (DE); and Tobias Kirchner, Ludwigsburg (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Mar. 6, 2023, as Appl. No. 18/178,744.
Claims priority of application No. 10 2022 202 425.7 (DE), filed on Mar. 10, 2022.
Prior Publication US 2023/0288458 A1, Sep. 14, 2023
Int. Cl. G01R 19/257 (2006.01); G01R 19/00 (2006.01)
CPC G01R 19/257 (2013.01) [G01R 19/0038 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a first comparator device including a first reference current providing device configured to provide a first reference current and a first comparison current providing device configured to provide a first comparison current;
wherein the first comparator device is configured to compare the first reference current with the first comparison current to obtain a first comparison result and output a first output signal characterizing the first comparison result based on the first comparison result;
at least one second comparator device including a second reference current providing device configured to provide a second reference current and a second comparison current providing device configured to provide a second comparison current;
wherein the second comparator device is configured to compare the second reference current with the second comparison current to obtain a second comparison result and output a second output signal characterizing the second comparison result based on the second comparison result;
wherein the second comparator device is configured to receive the first output signal and to form the second comparison result based on the second reference current and the second comparison current and the first output signal;
wherein the second comparator device is configured to provide a current associated with the first comparator device based on the first output signal and to include the current associated with the first comparator device in the comparison of the second reference current with the second comparison current, wherein the second comparator device includes a current source which can be controlled based on the first output signal to provide the current associated with the first comparator device.