Patent ID: 11967972
Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. An analog-to-digital converter (ADC) circuit to generate a digital output signal, the ADC circuit comprising:
a sigma-delta (SD) ADC circuit having an input coupled to receive an analog input signal and generate a first digital output signal, the SD ADC including:
an integrator circuit including an amplifier circuit and a chop switch, the chop switch coupled to an input of the amplifier circuit, wherein the chop switch receives and is controlled by a variable frequency chop signal; and
means for generating the variable frequency chop signal;
a sample rate converter circuit to receive the first digital output signal at a first sample rate and generate a second digital output signal at a second sample rate; and
a digital filter circuit including a decimator to process and decimate a representation of the digital output signal and generate a filtered digital output signal.