Abstract: An apparatus comprises: a photodetector having a cathode and an anode to generate an output current; and a differential transimpedance amplifier (TIA) having a first amplifier input coupled to a first one of the cathode and the anode through a first AC coupling capacitor and a first feedforward resistor that is connected in parallel with the first AC coupling capacitor between the first one of the cathode and the anode and the first amplifier input, the differential TIA having a second amplifier input coupled to a second one of the cathode and the anode that is not the first one of the anode and the cathode, the differential TIA configured to convert the output current of the photodetector as presented at the first amplifier input and the second amplifier input to a differential output voltage.

Abstract: A driver circuit for a Mach-Zehnder modulator is provided that includes a first driver having an input to receive one of an input data or input data complement, and an output to be coupled to a first application voltage node associated with a first arm of a Mach-Zehnder modulator. The driver circuit includes a second driver having an input to receive the other of the input data complement or input data, and an output to be coupled to a second application voltage node associated with the first arm of the Mach-Zehnder modulator. The first driver and the second driver differentially drive the first and second application voltage nodes associated with the first arm of the Mach-Zehnder modulator to result in a voltage swing associated with a voltage applied to the first arm that is twice the supply voltage.

Abstract: A circuit includes a front end section configured to receive input current signals; a programmable gain amplifier section coupled to the front end section, the programmable gain amplifier section including a plurality of inverters connected in series without a resistor disposed therebetween; and an output buffer section coupled to the programmable gain amplifier section and configured to output voltage signals.

Abstract: A driver circuit for a Mach-Zehnder modulator is provided that includes a first driver having an input to receive one of an input data or input data complement, and an output to be coupled to a first application voltage node associated with a first arm of a Mach-Zehnder modulator. The driver circuit includes a second driver having an input to receive the other of the input data complement or input data, and an output to be coupled to a second application voltage node associated with the first arm of the Mach-Zehnder modulator. The first driver and the second driver differentially drive the first and second application voltage nodes associated with the first arm of the Mach-Zehnder modulator to result in a voltage swing associated with a voltage applied to the first arm that is twice the supply voltage.

Abstract: A circuit includes a front end section configured to receive input current signals; a programmable gain amplifier section coupled to the front end section, the programmable gain amplifier section including a plurality of inverters connected in series without a resistor disposed therebetween; and an output buffer section coupled to the programmable gain amplifier section and configured to output voltage signals.

Abstract: A circuit includes a front end section configured to receive input current signals; a programmable gain amplifier section coupled to the front end section, the programmable gain amplifier section including a plurality of inverters connected in series without a resistor disposed therebetween; and an output buffer section coupled to the programmable gain amplifier section and configured to output voltage signals.

Abstract: A circuit includes a front end section configured to receive input current signals; a programmable gain amplifier section coupled to the front end section, the programmable gain amplifier section including a plurality of inverters connected in series without a resistor disposed therebetween; and an output buffer section coupled to the programmable gain amplifier section and configured to output voltage signals.