Hittite has launched two new successive detection log video amplifiers (SDLVAs) with a limited RF output feature that operates over the 1 to 26 GHz and 1 to 20 GHz frequency ranges respectively. The HMC813 and the HMC813LC4B are ideal for designers with space and power-constrained applications including EW and ELINT receivers, DF radar, ECM, IFM systems and missile guidance.
Available in die and ceramic 4 x 4 mm SMT formats, the devices feature power limiter circuitry at their RF outputs and carry a class 1A ESD rating (250 V HBM). Also well suited for high-speed channelised systems that require improved ESD performance, these SDLVAs employ a successive compression topology, which delivers a high logging range of 55 dB and provides a nominal log video output slope of 15 mV/dB.
The HMC813 and the HMC813LC4B are capable of processing RF pulses with amplitudes from -53 dBm to +7 dBm with less than 10 ns rise/fall times, and with recovery times of less than 20 ns. They exhibit frequency flatness of better than ±1,5 dB at -25 dBm input power, while logarithmic linearity is better than ±0,5 dB over the full -55°C to +85°C operating temperature range. Both chips consume less than 153 mA from a single +3,3 V supply.
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