Patent ID: 11885645
Assignee: ALLEGRO MICROSYSTEMS, LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A sensor comprising:
a sensing element configured to generate a sensing element output signal indicative of a sensed parameter;
a signal path responsive to the sensing element output signal, wherein the signal path is configured to generate a sensor output signal indicative of the sensed parameter, and wherein the signal path comprises: (i) an amplifier for amplifying the sensing element output signal; and (ii) an output driver for generating the sensor output signal;
a supply voltage detector configured to generate a supply voltage signal indicative of which of a plurality of voltage ranges a supply voltage of the sensor falls within, the supply voltage signal having at least a plurality of states, each of the plurality of states corresponding to a different one of the plurality of voltage ranges;
a coarse gain selection block;
a fine sensitivity control block; and
a computation block configured to perform a coarse gain adjustment on the sensing element output signal, the coarse gain adjustment being performed based on the supply voltage signal, the coarse gain adjustment being performed after a fine sensitivity control is performed on the sensing element output signal by the fine sensitivity control block, the coarse gain adjustment being performed by providing a first configuration signal to the coarse gain selection block thus causing the coarse gain selection block to adjust a gain of the amplifier.