Data Sheet

HMC558A

Rev. 0 | Page 13 of 15

THEORY OF OPERATION

The HMC558A is a general-purpose double balanced mixer in a

leadless RoHS compliant SMT package that can be used as an

upconverter or downconverter between 5.5 GHz and 14 GHz. This

mixer is fabricated in a GaAs MESFET process, and requires no

external components or matching circuitry. The HMC558A

provides excellent LO to RF and LO to IF isolation due to

optimized balun structures and operates with LO drive levels as low

as 9 dBm. The RoHS compliant HMC558A eliminates the need for

wire bonding, and is compatible with high volume surface mount

manufacturing techniques.