Soft handover in a coupled dual-oscillator system
AssigneeTexas Instruments Incorporated
InventorsShanmuganand Chellamuthu, Qunying Li, Vikram Joseph Mani
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Abstract
A system includes a sensor integrated circuit (IC), including a driver adapted to be coupled to an oscillator, the driver including first and second transistors. The sensor IC includes an amplitude control amplifier coupled to the first transistor. The sensor IC also includes a common mode control amplifier coupled to the second transistor. The sensor IC includes a handover control circuit coupled to the amplitude control amplifier and configured to hand off an operation from the sensor IC to a different sensor IC, the handover control circuit including a resistor network coupled to a switch network.
Claims13
A sensor circuit comprising:
- a driver;
- an amplitude control amplifier coupled to the driver;
- a common mode control amplifier coupled to the driver;
- and
- a handover control circuit coupled to the amplitude control amplifier and configured to hand off an operation from the sensor circuit to a different sensor circuit, the handover control circuit including a resistor network coupled to a switch network.
A system, comprising:
- a sensor integrated circuit (IC), including:
- a driver configured to produce an oscillating waveform;
- an amplitude control amplifier coupled to the driver and configured to adjust a differential output voltage value of the oscillating waveform;
- a common mode control amplifier coupled to the driver and configured to adjust an average voltage value of the oscillating waveform;
- and
- a handover control circuit coupled to the amplitude control amplifier, wherein the handover control circuit includes a resistor network coupled to a switch network, and wherein the handover control circuit is configured to repeatedly step down a preset reference voltage provided to the amplitude control amplifier.
Dependencies are inferred from the claim text.