Measurement and calibration of mismatch in an isolation channel
AssigneeSilicon Laboratories Inc.
InventorCarlos J. Briseno-Vidrios
Life of this patent
Estimating the term…
Abstract
A method for calibrating an isolator product includes receiving a calibration signal on a differential pair of nodes of a receiver signal path of a first integrated circuit die of the isolator product. The method includes generating a diagnostic signal having a level corresponding to an average amplitude of the calibration signal on the differential pair of nodes. The method includes configuring a programmable receiver signal path based on the diagnostic signal. Generating the diagnostic signal may include providing an analog signal based on a full-wave rectified version of the calibration signal on the differential pair of nodes. Generating the diagnostic signal may include converting the analog signal to a digital signal.
Claims20
A method for calibrating an isolator product, the method comprising:
- receiving a calibration signal on a differential pair of nodes of a receiver signal path of a first integrated circuit die of the isolator product;
- generating a diagnostic signal having a level corresponding to an average amplitude of the calibration signal on the differential pair of nodes;
- and
- configuring a programmable receiver signal path based on the diagnostic signal.
An isolator product comprising:
- a first integrated circuit die comprising:
- a receiver signal path having a diagnostic mode of operation and a normal mode of operation, the receiver signal path being selectively configured to receive a calibration signal on a differential pair of nodes in response to the isolator product being configured in the diagnostic mode of operation, the receiver signal path being selectively configured using a stored configuration in response to the isolator product being configured in the normal mode of operation;
- and
- a circuit coupled to the receiver signal path and selectively configured to generate a diagnostic signal having a level corresponding to an average amplitude of the calibration signal in response to the isolator product being configured in the diagnostic mode of operation, the stored configuration being based on the diagnostic signal.
A method for calibrating an isolator product, the method comprising:
- compensating for mismatch of an isolation channel coupled between a differential pair of receiver nodes of a first integrated circuit die of the isolator product and a differential pair of transmitter nodes of a second integrated circuit die of the isolator product based on a diagnostic signal generated by the isolator product in a diagnostic mode of operation, the diagnostic signal being indicative of the mismatch.
Dependencies are inferred from the claim text.