Patent ID: 11901910
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 14:
15. A method comprising:
performing a sampling phase of a successive approximation register digital-to-analog conversion that includes:
receiving an input voltage;
coupling the input voltage to a sampling capacitor that is coupled to an input of a transconductor; and
coupling a first capacitor to an output of the transconductor such that the first capacitor is coupled between the output of the transconductor and a ground node; and

performing a conversion phase of the successive approximation register digital-to-analog conversion that includes:
decoupling the first capacitor from the output of the transconductor; receiving a reference voltage;
coupling the reference voltage to the sampling capacitor; and
performing a comparison of a difference between the reference voltage and the input voltage using a level detector that includes an input coupled to the output of the transconductor by a second capacitor.