FRM3Z232 series are wideband PIN preamplifier receivers optimized for multi-rate from 156 Mbit/s up to 3.2 Gbit/s.FRM3Z234 series are high-sensitivity PIN preamplifier receivers optimized for multi-rate from 156 Mbit/s up to 2.7 Gbit/s. InGaAs PIN chip and 3.3V GaAs IC preamplifi er are assembled in 5pin coaxial type package. These devices are in compliance with ITU-T recommendations and Telcordia requirement.