The CMD162 is a GaAs MMIC low-noise amplifier chip for applications from 26 to 34 GHz. Optimized for 30-GHz satellite communications, the part boasts a typical noise figure of 1.7 dB with a small-signal gain of 22 dB and an output 1-dB compression point of 7 dB.
This device is claimed to reduce typical industry dc power dissipation for a device in this frequency band from approximately 340 down to 50 mW. Implementation is simplified since the device only requires positive drain and gate voltages of 2 V, thereby eliminating the negative voltages and sequencer circuits commonly associated with LNAs in this frequency range. The CMD162 can be biased with a drain voltage ranging from 1 to 4 V and a gate voltage ranging from 0 to 3 V.
The amplifier die measures 2.3 x 1.3 mm and includes gold backside metallization, and has full nitride passivation for increased reliability and moisture protection. It can handle input signal levels to 20 dBm. The GaAs MMIC amplifier has typical input return loss of 18 dB and typical output return loss of 20 dB, both at 30 GHz. (Contact company for pricing — available now.)
By Christina Nickolas
Custom MMIC , Westford , MA
Custom MMIC 978-467-4290
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