Abstract: An interleaver for combining at least two incoming signals into an analog output signal includes at least a first signal path and a second signal path. Each signal path has: an input terminal, a first gain stage for multiplying a signal coming from the input terminal with a first gain (a) to obtain a first signal, a mixer and a second gain stage for multiplying a signal coming from the input terminal with a second gain (b) before or after mixing it with a clock signal to obtain a second signal, an adder for adding the first and second signal to obtain an output signal of the signal path wherein the first and second gain are different from zero. The interleaver comprises an adder for adding the output signals from the signal paths.

Abstract: A transimpedance amplifier is provided for converting a current between its two input terminals to a voltage over its two output terminals comprising a high-speed level shifter configured for creating a difference in input DC voltage and for being transparent for alternating voltages, an input biasing network configured for reverse biasing a photodiode connected to at least one of the input terminals and transparent for a feedback signal from the feedback network which is differentially and DC-coupled with the output terminals of the voltage amplifier and outputs of the feedback network are differentially and DC-coupled with the input biasing network of which outputs are coupled with inputs of the level shifter which is differentially and DC-coupled with input terminals of the voltage amplifier.

Abstract: An interleaver for combining at least two incoming signals into an analog output signal includes at least a first signal path and a second signal path. Each signal path has: an input terminal, a first gain stage for multiplying a signal coming from the input terminal with a first gain (a) to obtain a first signal, a mixer and a second gain stage for multiplying a signal coming from the input terminal with a second gain (b) before or after mixing it with a clock signal to obtain a second signal, an adder for adding the first and second signal to obtain an output signal of the signal path wherein the first and second gain are different from zero. The interleaver comprises an adder for adding the output signals from the signal paths.

Abstract: A transimpedance amplifier is provided for converting a current between its two input terminals to a voltage over its two output terminals comprising a high-speed level shifter configured for creating a difference in input DC voltage and for being transparent for alternating voltages, an input biasing network configured for reverse biasing a photodiode connected to at least one of the input terminals and transparent for a feedback signal from the feedback network which is differentially and DC-coupled with the output terminals of the voltage amplifier and outputs of the feedback network are differentially and DC-coupled with the input biasing network of which outputs are coupled with inputs of the level shifter which is differentially and DC-coupled with input terminals of the voltage amplifier.