Overview

Features and Benefits

  • Serial interface up to 50 MHz
  • SDO daisy-chaining option
  • 9.5 Ω on resistance at 25°C
  • 1.6 Ω on-resistance flatness
  • Fully specified at ±15 V/+12 V/±5 V
  • 3 V logic-compatible inputs
  • Rail-to-rail operation
  • 20-lead TSSOP and 20-lead, 4 mm × 4 mm LFCSP

Product Details

The ADG1438 and ADG1439 are CMOS analog matrix switches with a serially controlled 3-wire interface. The ADG1438 is an 8-channel matrix switch, and the ADG1439 is a dual 4-channel matrix switch.

The ADG1438/ADG1439 use a versatile 3-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. The output of the shift register, SDO, enables a number of the ADG1438/ADG1439 devices to be daisy-chained. On power-up, the internal shift register contains all zeros, and all switches are in the off state.

Each switch conducts equally well in both directions when on, making these devices suitable for both multiplexing and demultiplexing applications. Because each switch is turned on or off by a separate bit, these devices can also be configured as a type of switch array, where any, all, or none of the eight switches can be closed at any time. The input signal range extends to the supply rails. All channels exhibit break-before-make switching action, preventing momentary shorting when switching channels.

The ultralow on resistance and on-resistance flatness of these switches make them ideal solutions for data acquisition and gain switching applications where low distortion is critical. iCMOS® construction ensures ultralow power dissipation, making the parts ideally suited for portable and battery-powered instruments.

Product Highlights

  1. 50 MHz serial interface.
  2. 9.5 Ω on resistance.
  3. 1.6 Ω on-resistance flatness.
  4. 3 V logic-compatible digital input, VINH = 2.0 V, VINL = 0.8 V.

Applications

  • Relay replacement
  • Audio and video routing
  • Automatic test equipment
  • Data acquisition systems
  • Temperature measurement systems
  • Avionics
  • Battery-powered systems
  • Communication systems
  • Medical equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.