Moreover, designers can choose from a number of boards (some including FPGAs) to rapidly start product development. FPRF suppliers provide free printed circuit board layouts (Gerber files) to remove the issue of the tricky RF section and reduce risk and speed up the time to market.
Designers do not need a formal evaluation of the FPRF devices, as they can program the chips on the bench and check out the performance. Potential issues such as component matching, voltage and temperature sensitivities and cross-talk have been resolved during the chip design and qualification, relieving the user of these concerns.
Programming of the FPRF is by loading simple address and parameter details into the device over an SPI connection. This scheme allows the design to be modified in seconds. The revised performance can be tested, enabling the effects of frequency, filter bandwidth and gain to be rapidly explored (see Figures 3 and 4).