The AD8318 from Analog Devices is a RF Detector with Frequency 0.001 to 8 GHz, Dynamic Range 42 to 70 dB, Video Bandwidth 45 MHz, Supply Voltage 4.5 to 5.5 V, Current 0.26 to 0.35 mA. Tags: Surface Mount, Log Detector. More details for AD8318 can be seen below.