Differential signals from a high performance DAC, typically needed to be differentially-loaded in order to preserve the linearity and resolution from the impact of commom-mode spurious. In addition, state-of-the-art DP-QPSK modulators for 16QAM applications are driven single-ended and require linear drive voltage of up to 4 V. The newly released SHF D836 A differential input, single-ended output linear driver amplifier makes a perfect interface between a high performance DAC and a PM QPSK modulator for 16QAM.
Suppression of common mode interference of SHF D836 A @ 32 Gbps
The new amplifier is a single chip design based on state-of-the-art commercial GaAs process, housed in a special low loss carrier PCB environment to maintain wide bandwidth and low group delay variation, necessary for high performance operation.
The full data sheet can be found here.