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ADG904:  WIDEBAND 2.5 GHZ, 37 DB ISOLATION AT 1 GHZ, CMOS 1.65 V TO 2.75 V, 4:1 MUX/SP4T

The ADG904 and ADG904-R are wideband analog 4:1 multiplexers that use a CMOS process to provide high isolation and low insertion loss to 1 GHz. The ADG904 is an absorptive/matched mux with 50 Ω terminated shunt legs; the ADG904-R is a reflective mux. These devices are designed such that the isolation is high over the dc to 1 GHz frequency range.

The ADG904 and ADG904-R switch one of ...More

ADG904:  WIDEBAND 2.5 GHZ, 37 DB ISOLATION AT 1 GHZ, CMOS 1.65 V TO 2.75 V, 4:1 MUX/SP4T

Product Description

The ADG904 and ADG904-R are wideband analog 4:1 multiplexers that use a CMOS process to provide high isolation and low insertion loss to 1 GHz. The ADG904 is an absorptive/matched mux with 50 Ω terminated shunt legs; the ADG904-R is a reflective mux. These devices are designed such that the isolation is high over the dc to 1 GHz frequency range.

The ADG904 and ADG904-R switch one of four inputs to a common output, RFC, as determined by the 3-bit binary address lines A0, A1, and EN. A Logic 1 on the EN pin disables the device.

The parts have on-board CMOS control logic, which eliminates the need for external control circuitry. The control inputs are both CMOS and LVTTL compatible. The low power consumption of these devices makes them ideally suited for wireless applications and general-purpose high frequency switching.

Product Highlights

  1. −37 dB off isolation @ 1 GHz
  2. 1.1 dB insertion loss @ 1 GHz
  3. 20-lead TSSOP/LFCSP packages

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

    • Data Sheet, Rev. B, 2/07

    RESOURCES & TOOLS

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    • Wideband switch: –3 dB @ 2.5 GHz
    • ADG904: absorptive 4:1 mux/SP4T
    • ADG904-R: reflective 4:1 mux/SP4T
    • High off isolation (37 dB @ 1 GHz)
    • Low insertion loss (1.1 dB dc to 1 GHz)
    • Single 1.65 V to 2.75 V power supply
    • CMOS/LVTTL control logic
    • 20-lead TSSOP and 4 mm × 4 mm LFCSP packages
    • Low power consumption (1 μA maximum)
    • Switch Type: SP4T
    • Available Packages: CSP,SOP
    • Supply Voltage: Single (+1.65V to +2.75V)
    • Insertion Loss (dB): 0.4dB
    • Bandwidth: 2.5GHz
    • P-1dB (dBm): 16dBm
    • Off Isolation (-dB): 60dB
    • Crosstalk (-dB): 58dB
    • t ON : 8.5ns
    • t OFF: 13ns

    Functional Block Diagram for ADG904

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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.