Patent ID: 11867572
Assignee: STMICROELECTRON NTERNATIONAL N.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. The sensing circuit of claim 16, wherein the switched capacitor circuit comprises:
a first capacitor used to sample and hold the base-emitter voltage of the first bipolar junction transistor;
a second capacitor used to sample and hold the base-emitter voltage of the second bipolar junction transistor;
a first switch circuit configured to selectively connect the first capacitor between the base-emitter voltage of the first bipolar junction transistor and a non-inverting input of the integrator, when the most recent bit of the bitstream is the first logic value and the switched capacitor circuit is cooperating with the integrator to perform sampling;
wherein the first switch circuit selectively connects the first capacitor between a common mode voltage and the non-inverting input of the integrator, when the most recent bit of the bitstream is the first logic value and the switched capacitor circuit is cooperating with the integrator to perform integration; and
a second switch circuit configured to selectively connects the second capacitor between the base-emitter voltage of the second bipolar junction transistor and an inverting input of the integrator, when the most recent bit of the bitstream is the first logic value and the switched capacitor circuit is cooperating with the integrator to perform sampling;
wherein the second switch circuit selectively connects the second capacitor between the common mode voltage and the inverting input of the integrator, when the most recent bit of the bitstream is the first logic value and the switched capacitor circuit is cooperating with the integrator to perform integration.