ADG1438 ±15 V/+12 V/±5 V, Single 8 to 1 Multiplexer, Serially Controlled Matrix Switch

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

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

Applications

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
  • Switches & Multiplexers
    IBIS Models
    Data Sheets
    Documentnote
    ADG1438/ADG1439: Serially Controlled, ±15 V/+12 V/±5 V, 8-Channel/4-Channel, iCMOS Multiplexers/Matrix Switches Data Sheet (Rev. B)PDF 527.07 K
    User Guides
    Documentnote
    UG-1036: Evaluation Board for 24-Lead TSSOP Devices in the Switches and Multiplexers Portfolio (Rev. 0)PDF 318.06 K
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADG1438BCPZ-REEL7 Production20 ld LFCSP (4x4mm 2.5EP)REEL 1500-40 to 125C02.96Y
    ADG1438BRUZ Production20 ld TSSOPOTH 75-40 to 125C3.612.96Y
    ADG1438BRUZ-REEL7 Production20 ld TSSOPREEL 1000-40 to 125C02.96Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-24TSSOPEBZEvaluation Board150Y
    Reference Materials
    ADG1438/ADG1439: Serially Controlled, ±15 V/+12 V/±5 V, 8-Channel/4-Channel, iCMOS Multiplexers/Matrix Switches Data Sheet (Rev. B) adg1438
    ADG1438 IBIS Model adg1438
    UG-1036: Evaluation Board for 24-Lead TSSOP Devices in the Switches and Multiplexers Portfolio (Rev. 0) adg3245
    Switches and Multiplexers Product Selection Guide adg2128