General Description
The HMC557 is a passive double balanced mixer that can be used as an upconverter or downconverter between 2.5 and 7 GHz. The miniature monolithic mixer is fabricated in a GaAs MESFET process, and requires no external components or matching circuitry. The HMC557 operates with LO drive levels as low as +9 dBm and provides excellent LO to RF and LO to IF isolation due to optimized balun structures. Measurements were made with the chip mounted into in a 50 ohm test fi xture and includes the parasitic effects of wire bond assembly. Connections were made with a 1 mil wire bond with minimal length (<12 mil).

FEATUREs
   High LO/RF Isolation: 48 dB
   Wide IF Bandwidth: DC - 3 GHz
   Passive Double Balanced Topology
   Low Conversion Loss: 7 dB
   Small Size: 1.02 x 0.94 x 0.1 mm

Typical Applications
The HMC557 is ideal for:
• WiMAX & Fixed Wireless
• Microwave Radio
• Military & Space
• Communications, Radar & EW
• Test Equipment & Sensors