JAJSMY5 July 2024 TRF1108
ADVANCE INFORMATION
A common application of the TRF1108 is to function as a buffer amplifier for an RF DAC, such as the DAC39RF10 or AFE7950, which have differential outputs. Conventionally, passive baluns are used to interface with RF DACs as a result of the low-availability of high-bandwidth, linear amplifiers. The TRF1108 is a differential-to-single-ended amplifier that has excellent gain and phase imbalance, input and output return loss, and exceeds the performance of bulky and expensive passive baluns for DAC buffer applications. The TRF1108 integrates the functionality of a wide-band passive balun and gain-block in a single 2mm x 2mm package, reducing PCB area for high channel count phased array systems.
The following figure shows the schematic where the TRF1108 is used as a DAC buffer amplifier.