Texas Instruments Corporation

Sreeram N S

Anant Shankar Kamath

Kumar Anurag Shrivastava

Tarunvir Singh

Yuan Rao

Ajith Kumar Narayanasetty

Kashyap Barot

Anthony Calabria

A circuit includes a semiconductor substrate, a first ground terminal, a second ground terminal, a driver circuit, a capacitor, a receiver circuit, and a substrate bias circuit. The driver circuit is on the semiconductor substrate. The driver circuit is coupled to the first ground terminal, and has a first output and a second output. The capacitor has a first terminal coupled to the first output of the driver circuit and a second terminal. The receiver circuit is on the semiconductor substrate. The receiver circuit is coupled to the second ground terminal, and has a first input coupled to the second terminal of the capacitor, and a second input coupled to the second output of the driver circuit. The substrate bias circuit has a first input coupled to the first ground terminal, a second input coupled to the second ground terminal, and an output coupled to the semiconductor substrate.

Level shifter circuit

An example apparatus includes: transmitter channel circuitry including: a buffer having an output; and a capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the buffer; an isolation transformer including: a first inductor having a terminal coupled to the second terminal of the capacitor; and a second inductor magnetically coupled to the first inductor across an isolation barrier, and receiver channel circuitry coupled to the second inductor.

Methods and apparatus for edge-triggered digital isolator circuitry

A circuit includes a switch and a switch controller. The switch has a first terminal coupled to a voltage supply terminal, a second terminal coupled to a ground terminal and to a first bondwire terminal. The switch controller includes: a first resistor, a second resistor, a capacitor, and a buffer circuit. The first resistor has a first terminal coupled to a second bondwire terminal. The second resistor has a first terminal coupled to the voltage supply terminal and has a second terminal coupled to a second terminal of the first resistor. The capacitor has a first terminal coupled to the ground terminal and to the first bondwire terminal and has a second terminal coupled to second terminals of the first and second resistors. The buffer circuit has a terminal coupled to the second terminal of the capacitor and has an output terminal coupled to the control terminal of the switch.

Integrated circuit with bondwire fault detection circuit

Several circuits and methods for transferring an input data signal in a digital isolator are disclosed. In an embodiment, the digital isolator includes an isolation element, input circuit, and output circuit. The isolation element includes at least one input node and at least one output node, the input circuit is electronically coupled to the input node and generates modulated differential data signals based on modulating the input data signal on a carrier signal. The input circuit operates using a first supply voltage with respect to a first ground. The output circuit is electronically coupled to the output node to receive the modulated differential data signals, operates using a second supply voltage with respect to a second ground and includes a frequency-shift keying demodulator configured to generate a demodulated data signal in response to detection of presence of the carrier signal. The output circuit further generates an output data signal.

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Bengaluru, India

Sreeram N S