Wideband 2.5 GHz, 37 dB Isolation at 1 GHz, CMOS 1.65 V to 2.75 V, 4:1 Mux/SP4T Data Sheet ADG904 FEATURES FUNCTIONAL BLOCK DIAGRAMS Wideband switch: 3 dB 2.5 GHz ADG904 ADG904-R RF1 ADG904: absorptive 4:1 mux/SP4T RF1 ADG904-R: reflective 4:1 mux/SP4T 50 High off isolation (37 dB 1 GHz) Low insertion loss (1.1 dB dc to 1 GHz) RF2 RF2 Single 1.65 V to 2.75 V power supply 50 RFC RFC CMOS/LVTTL control logic 20-lead TSSOP and 4 mm 4 mm LFCSP packages RF3 RF3 Low power consumption (1 A maximum) Qualified for automotive applications 50 APPLICATIONS RF4 RF4 Wireless communications General-purpose RF switching 50 Dual-band applications 1 OF 4 DECODER 1 OF 4 DECODER High speed filter selection Digital transceiver front end switch A0 A1 EN A0 A1 EN IF switching Figure 1. Figure 2. Tuner modules Antenna diversity switching The parts have on-board CMOS control logic, which eliminates GENERAL DESCRIPTION the need for external control circuitry. The control inputs The ADG904 and ADG904-R are wideband analog 4:1 are both CMOS and LVTTL compatible. The low power multiplexers that use a CMOS process to provide high isolation consumption of these devices makes them ideally suited and low insertion loss to 1 GHz. The ADG904 is an for wireless applications and general-purpose high absorptive/matched mux with 50 terminated shunt legs the frequency switching. ADG904-R is a reflective mux. These devices are designed such that the isolation is high over the dc to 1 GHz frequency range. PRODUCT HIGHLIGHTS The ADG904 and ADG904-R switch one of four inputs to a 1. 37 dB off isolation 1 GHz common output, RFC, as determined by the 3-bit binary 2. 1.1 dB insertion loss 1 GHz address lines A0, A1, and . A Logic 1 on the pin disables EN EN 3. 20-lead TSSOP/LFCSP packages the device. 10 0.3 V = 2.5V 0.4 DD 0.5 0.6 20 0.7 0.8 0.9 1.0 30 1.1 1.2 1.3 1.4 40 1.5 1.6 1.7 1.8 50 1.9 2.0 S21 2.1 2.2 60 2.3 2.4 2.5 70 2.6 S12 2.7 2.8 V = 2.5V DD 2.9 T = 25C A 80 3.0 10k 100k 1M 10M 100M 1G 10G 10k 100k 1M 10M 100M 1G 10G FREQUENCY (Hz) FREQUENCY (Hz) Figure 3. Off Isolation vs. Frequency Figure 4. Insertion Loss vs. Frequency Rev. D Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20042016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 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OFF ISOLATION (dB) 04504-0-028 INSERTION LOSS (dB) 04504-0-001 04504-0-029 04504-0-012ADG904 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ........................................................................................9 Applications ....................................................................................... 1 Applications ..................................................................................... 11 Functional Block Diagrams ............................................................. 1 Absorptive vs. Reflective ........................................................... 11 General Description ......................................................................... 1 Antenna Diversity Switch .......................................................... 11 Product Highlights ........................................................................... 1 Filter Selection ............................................................................ 11 Specifications ..................................................................................... 3 Tx/Rx Switching ......................................................................... 11 Absolute Maximum Ratings ............................................................ 4 Evaluation Board ............................................................................ 12 ESD Caution .................................................................................. 4 Outline Dimensions ....................................................................... 13 Pin Configurations and Function Descriptions ........................... 5 Ordering Guide .......................................................................... 14 Terminology ...................................................................................... 6 Automotive Products ................................................................. 14 Typical Performance Characteristics ............................................. 7 REVISION HISTORY 9/2016Rev. C to Rev. D 2/2007Rev. A to Rev. B Change to Product Title ................................................................... 1 Updated Outline Dimensions ....................................................... 13 Changes to Figure 3 .......................................................................... 1 Changes to Ordering Guide .......................................................... 14 Changes to Figure 11 and 12 ........................................................... 7 Changes to Figure 19 ........................................................................ 9 8/2005Rev. 0 to Rev. A Change to Ordering Guide ............................................................ 14 Added LFCSP Package ....................................................... Universal Changes to Specifications ................................................................. 3 3/2013Rev. B to Rev. C Changes to Absolute Maximum Ratings ........................................ 4 Changes to Features Section............................................................ 1 Inserted New Figure 6 ....................................................................... 5 Changes to Figure 6 .......................................................................... 5 Changes to Table 4 ............................................................................. 5 Updated Outline Dimensions ....................................................... 13 Changes to Outline Dimensions .................................................. 13 Changes to Ordering Guide .......................................................... 14 Changes to Ordering Guide .......................................................... 14 Added Automotive Product Section ............................................ 14 4/2004Revision 0: Initial Version Rev. D Page 2 of 16