The AD8361 is a mean-responding power detector for use inhigh frequency receiver and transmitter signal chains, up to2.5 GHz. It is very easy to apply. It requires a single supply onlybetween 2.7 V and 5.5 V, a power supply decoupling capacitor,and an input coupling capacitor in most applications. Theoutput is a linear-responding dc voltage with a conversion gainof 7.5 V/V rms. An external filter capacitor can be added toincrease the averaging time constant.The AD8361 is intended for true power measurement of simpleand complex waveforms. The device is particularly useful formeasuring high crest-factor (high peak-to-rms ratio) signals,such as CDMA and W-CDMA.The AD8361 has three operating modes to accommodate avariety of analog-to-digital converter requirements: Ground reference mode, in which the origin is zero. Internal reference mode, which offsets the output 350 mV above ground. Supply reference mode, which offsets the output to VS/7.5.The AD8361 is specified for operation from −40°C to +85°Cand is available in 8-lead MSOP and 6-lead SOT-23 packages. Itis fabricated on a proprietary high fT silicon bipolar process.
$4.56 - $11.71
