Back to results
US 7,548,738 B2Granted
Peak detector
AssigneeSilicon Laboratories Inc.
InventorsVishnu S. Srinivasan, G. Tyson Tuttle
Life of this patent
Estimating the term…
Abstract
A receiver includes a gain stage, a peak detector and a processor. The gain stage provides an output signal, and the peak detector provides a binary indication of whether the output signal has reached a predetermined threshold. The processor controls the gain stage in response to the binary indication.
Claims17
A receiver comprising:
- a gain stage to provide an output signal;
- a peak detector to provide a binary indication of whether the output signal has reached a predetermined threshold, the peak detector comprising an amplifier to provide an output signal, a capacitor and a circuit comprising a switch to couple the amplifier to the capacitor to store charge in the capacitor in response to the output signal exceeding a threshold voltage;
- a processor to control the gain stage in response to the binary indication;
- and
- a latch to provide the binary indication, the latch being activated by the circuit in response to a voltage of the capacitor surpassing a second threshold.
2 more elements
A peak detector comprising:
- a capacitor;
- a circuit comprising a switch to couple an input signal to the capacitor to store charge on the capacitor in response to the input signal exceeding a threshold;
- a latch coupled to the circuit to provide a binary indication of whether the input signal has reached a predetermined threshold, the latch being adapted to be activated in response to a voltage of the capacitor exceeding a second threshold;
- and
- a differential amplifier comprising an output terminal coupled to the circuit, the differential amplifier adapted to remove an input bias from the output terminal.
2 more elements
A method comprising:
- coupling a peak detector to an output signal of a gain stage of a receiver;
- using the peak detector to provide a binary indication of whether the output signal has reached a predetermined threshold;
- using a processor to control the gain stage in response to the binary indication;
- storing charge on a capacitor of the peak detector in response to the output signal exceeding a first threshold, the storing comprising coupling the capacitor to the output signal;
- and
- changing a state of a latch of the peak detector to provide the binary indication in response to a voltage of the capacitor surpassing a second threshold.
3 more elements
Dependencies are inferred from the claim text.