The HMC220MS8 is an ultra miniature doublebalanced mixer in an 8 lead plastic surface mount package (MSOP). This passive MMIC mixer is constructed of GaAs Schottky diodes and novel planar transformer baluns on the chip. The device can be used as an up or downconverter, bi-phase (de)modulator or phase comparator. It is especially suited for 5.9 to 11.7 GHz microwave radio and VSAT applications because of its high dynamic input signal range, small size, zero DC bias requirement and low cost. The consistent MMIC performance will improve system operation and assure regulatory compliance. The MSOP8 package is the smallest footprint available for a complete passive double-balanced mixer, 0.118" x 0.190" (3.0mm x 4.9mm). At a height of 0.040" (1.0mm) this is the thinnest mixer package available today.