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HighFreq-CMOS-Slide6

The ADG918 is an absorptive (matched) switch with 50Ω terminated shunt legs while the ADG919 is a reflective switch with 0Ω terminated shunts to ground. The ADG918 absorptive switch has a good VSWR (voltage standing wave ratio) on each port, regardless of the switch mode. An absorptive switch should be used when there is a need for a good VSWR that is looking into the port but not passing the through signal to the common port. The ADG918 is therefore ideal for applications that require minimum reflections back to the RF source. It also ensures that the maximum power is transferred to the load.

PTM Published on: 2009-04-07