Patent ID: 11962331
Assignee: NXP B.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The sigma-delta ADC of claim 1 further comprising:
a further input;
a further output;
wherein the passive filter has a filter further input coupled to the further input, and a filter further output coupled to the filter capacitor second terminal;
the gain stage has a gain stage further output, and a gain stage further input coupled to the filter further output;
the quantiser has a further quantiser input coupled to the gain stage further output, and a quantiser further output coupled to the further output; wherein
the passive filter comprises a second filter resistor having a second filter resistor first terminal coupled to the filter further input and a second filter resistor second terminal coupled to the filter further output;
the gain element has a gain element further input coupled to the gain stage further input, and a gain element further output coupled to the gain stage further output, and the gain stage further comprises a second gain stage capacitor coupled between the gain element further output and the first gain stage resistor second terminal; and
the sigma-delta ADC further comprises a further feedback resistor having a further feedback resistor first terminal coupled to the output and a further feedback resistor first terminal coupled to the passive filter further output; and wherein the feedback resistor first terminal is coupled to the further output and the feedback resistor second terminal is coupled to the passive filter output.