摘要:
Various embodiments allow for background calibration of channel-to-channel mismatch errors.In certain embodiments calibration is accomplished by comparing the output of I-ADCs against the output of a reference ADC and correlating the difference to a known function to obtain a correction signal that can be used to correct channel-to-channel mismatch errors.
摘要:
Various embodiments allow for background calibration of channel-to-channel mismatch errors. In certain embodiments calibration is accomplished by comparing the output of I-ADCs against the output of a reference ADC and correlating the difference to a known function to obtain a correction signal that can be used to correct channel-to-channel mismatch errors.
摘要:
A phase-locked loop circuitry includes an oscillator circuitry having an input and an output. A phase detector circuit is connected to the output of the oscillator circuitry and has outputs thereof. A digital loop filter circuit is connected to the outputs of the phase detector circuitry and has outputs thereof. The outputs of the digital loop filter circuit are coupled, through a summing circuit, to the input of the oscillator circuitry. Values associated with the outputs of the digital loop filter circuit are updated concurrently based upon values associated with the outputs of the phase detector circuitry. One output of the digital loop filter circuitry has a high-pass transfer function.
摘要:
A phase-locked loop circuitry includes an oscillator circuitry having an input and an output. A phase detector circuit is connected to the output of the oscillator circuitry and has outputs thereof. A digital loop filter circuit is connected to the outputs of the phase detector circuitry and has outputs thereof. The outputs of the digital loop filter circuit are coupled, through a summing circuit, to the input of the oscillator circuitry. Values associated with the outputs of the digital loop filter circuit are updated concurrently based upon values associated with the outputs of the phase detector circuitry. One output of the digital loop filter circuitry has a high-pass transfer function.