Hittite Microwave Corp.
has launched seven new silicon germanium (SiGe) BiCMOS mixer integrated circuits (ICs) for broadband frequency upconversion and downconversion applications from 0.7 to 3.9 GHz. Each IC incorporates a double-balanced mixer and a local-oscillator (LO) amplifier that combine to provide third-order-intercept (IP3) performance as good as +35 dBm when operating with only 0-dBm LO drive. Models include the 0.7-to-1.0-GHz HMC684LP4E, 1.7-to-2.2-GHz HMC685LP4E, 2.0-to-2.7-GHz HMC688LP4E, and 3.1-to3.9-GHz HMC666LP4E. All four have single-ended LO and RF ports and differential intermediate-frequency (IF) ports with range of DC to 500 MHz. The conversion loss is as low as 7 dB with as much as 30-dB port-to-port (LO-to-RF and LO-to-IF) isolation. The frequency converters are supplied in RoHS-compliant 4 x 4 mm QFN packages and operate from a single +5-VDC supply.