GENERAL DESCRIPTION
The ADG901/ADG902 are wideband switches that use a complementary metal-oxide semiconductor (CMOS) process to provide high isolation and low insertion loss to 1 GHz. The ADG901 is an absorptive (matched) switch with 50 Ω terminated shunt legs, while the ADG902 is a reflective switch. These devices are designed such that the isolation is high over the dc to 1 GHz frequency range. These switches enable the user to pass dc signals up to 0.5 V without the use of a dc blocking capacitor. They have on-board CMOS control logic, thus eliminating the need for external controlling circuitry. The control inputs are both CMOS and LVTTL compatible. The low power consumption of these CMOS devices makes them ideally suited to wireless applications and general-purpose high frequency switching.

FEATURES
   ADG901 absorptive switch
   ADG902 reflective switch
   Enables user to pass dc signals up to 0.5 V without dc
      blocking capacitor
   Operational from 0 Hz up to 4.5 GHz at −3 dB frequency
      40 dB off isolation at 1 GHz typical
      0.8 dB insertion loss at 1 GHz typical
      17 dBm P1dB at 1 GHz typical
   Available in 3 mm × 3 mm, 8-lead MSOP and 8-lead LFCSP
   <1 μA power consumption
   CMOS/LVTTL control logic
   Specified at 1.65 V to 2.75 V

APPLICATIONS
   Wireless communications
   General purpose RF switching
   Dual-band applications
   High speed filter selection
   Digital transceiver front-end switch
   IF switching
   Tuner modules
   Antenna diversity switching list