ADG901BCPZ

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