HMC258

v03.1007 HMC258 GaAs MMIC SUB-HARMONICALLY PUMPED MIXER, 14 - 21 GHz Typical Applications Features The HMC258 is ideal for: Integrated LO Amplifier: 0 dBm Drive Microwave Point-to-Point Radios Sub-Harmonically Pumped (x2) LO VSAT 3 SATCOM High 2LO/RF Isolation: 40 dB Die Size: 0.85 x 1.15 x 0.1 mm MIXERS - SUB-HARMONIC - CHIP OLETE Functional Diagram General Description The HMC258 chip is a compact sub-harmonically pumped (x2) single ended MMIC mixer with an integrated LO amplifier which can be used as an upconverter or downconverter. The chip utilizes a GaAs MESFET technology that results in a small overall chip area of 0.9mm2. The 2LO to RF isolation is excellent eliminating the need for additional filtering. The LO amplifier is a single bias (+5V) two stage design with only 0 dBm drive requirement. A less stringent oscillator design is made possible by the low LO drive and sub-harmonic nature of the chip. All data is with the chip in a 50 ohm test fixture connected via 0.025 mm (1 mil) diameter wire bonds of minimal length <0.31 mm (<12 mils). BS Electrical Specifications, TA = +25° C, LO Drive = 0 dBm OParameter IF = 1 GHz Vdd = +5.0V Min. Typ. Max. IF = 1 GHz Vdd = +5.0V Units Min. Typ. Max. Frequency Range, RF 14 - 21 17 - 20 GHz Frequency Range, LO 7 - 10.5 8.5 - 10 GHz Frequency Range, IF DC - 3 DC - 3 GHz Conversion Loss 10 13.5 9.5 12 dB Noise Figure (SSB) 10 13.5 9.5 12 dB 2LO to RF Isolation 30 40 34 40 ...