Patent ID: 11867773
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A circuit, comprising:
a switched capacitor module configured to receive a positive differential input signal and a negative differential input signal, comprising a switching network, a first sampling capacitor, and a second sampling capacitor;
an integrator having a positive input coupled to the first sampling capacitor, a negative input coupled to the second sampling capacitor, a positive output, and a negative output;
a first feedback loop, comprising:
a first switch coupled between the positive input and the negative output;
a second switch coupled to the positive input
a first feedback capacitor coupled between the second switch and the negative output;

a second feedback loop, comprising:
a third switch coupled between the negative input and the positive output;
a fourth switch coupled to the negative input; and
a second feedback capacitor coupled between the fourth switch and the positive output;

a fifth switch coupled between the first feedback capacitor and the negative output;
a sixth switch configured to couple the second feedback capacitor to the positive output or to the positive input;
a seventh switch coupled between the negative and positive outputs;
an output buffer;
an eighth switch coupled between the negative output and an input of the output buffer; and, a ninth switch configured to couple the first feedback capacitor to an output of the output buffer or to a resistor, wherein the resistor is further coupled to the output of the output buffer.