Opto-emulator

An opto-emulator transmitter comprising:

• transmitter circuitry having a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal;
• and
• receiver replica circuitry having a first terminal, a second terminal, and a third terminal, the first terminal of the receiver replica circuitry coupled to the third terminal of the transmitter circuitry, the second terminal of the receiver replica circuitry coupled to the fourth terminal of the transmitter circuitry, and the third terminal of the receiver replica circuitry coupled to the fifth terminal of the transmitter circuitry,
• wherein the transmitter circuitry is configured to:
• receive a current at the first terminal of the transmitter circuitry;
• provide a transmit signal at the third and fourth terminals of the transmitter circuitry responsive to the current;
• receive a feedback signal from the receiver replica circuitry at the fifth terminal of the transmitter circuitry, the feedback signal responsive to the transmit signal;
• and
• provide an adjusted transmit signal at the third and fourth terminals of the transmitter circuitry responsive to the current and the feedback signal.

An opto-emulator circuit comprising:

• an opto-emulator receiver that includes:
• a first rectifier circuit having a first terminal, a second terminal, and a third terminal;
• and
• a first transistor having a first terminal, a second terminal, and a control terminal, the control terminal of the transistor coupled to the third terminal of the rectifier circuit;
• and
• an opto-emulator transmitter that includes:
• a current controller having a first terminal, a second terminal, and a third terminal;
• an oscillator circuit having a first terminal, a second terminal, and third terminal, the first terminal of the oscillator circuit coupled to the second terminal of the current controller;
• a second rectifier circuit having a first terminal, a second terminal, and a third terminal, the first terminal of the second rectifier circuit coupled to the second terminal of the oscillator circuit, and the second terminal of the second rectifier circuit coupled to the third terminal of the oscillator circuit;
• and
• a second transistor having a first terminal, a second terminal, and a control terminal, the control terminal of the transistor coupled to the third terminal of the second rectifier circuit.