MagnaChip Semiconductor Corp. ("MagnaChip Semiconductor"), a Korea-based designer and manufacturer of analog and mixed-signal semiconductor products, and Peregrine Semiconductor Corp., a fabless provider of high-performance radio frequency integrated circuits (RFICs), today announced that MagnaChip has expanded production of Peregrine Semiconductor's STeP5 UltraCMOS® technology-based RFIC product line, including the most recent DuNE™ Digitally Tunable Capacitors (DTCs) for RF impedance tuning.