ADG5248F

PRODUCTION

User Defined Fault Protection and Detection, 0.8 pC QINJ, 8:1 Multiplexer

Data Sheet (Rev. B) Product Selection Table
Viewing:

Overview

  • User defined secondary supplies set overvoltage level
    • Overvoltage protection up to −55 V and +55 V
    • Power-off protection up to −55 V and +55 V
    • Overvoltage detection on source pins
    • Minimum secondary supply level: 4.5 V single-supply
    • Interrupt flags indicate fault status
  • Low charge injection (QINJ): 0.8 pC
  • Low drain/source on capacitance: 19 pF
  • Latch-up immune under any circumstance
  • Known state without digital inputs present
  • VSS to VDD analog signal range
    • ±5 V to ±22 V dual-supply operation
    • 8V to 44 V single-supply operation
    • Fully specified at ±15 V, ±20 V, +12 V, and +36 V

The ADG5248F and ADG5249F are 8:1 and dual 4:1 analog multiplexers. The ADG5248F switches one of eight inputs to a common output and the ADG5249F switches one of four differential inputs to a common differential output. Each channel conducts equally well in both directions when on, and each channel has an input signal range that extends to the supplies. The primary supply voltages define the on-resistance profile, whereas the secondary supply voltages define the voltage level at which the overvoltage protection engages.

When no power supplies are present, the channel remains in the off condition, and the switch inputs are high impedance. Under normal operating conditions, if the analog input signal levels on any Sx pin exceed positive fault voltage (POSFV) or negative fault voltage (NEGFV) by a threshold voltage (VT), the channel turns off and that Sx pin becomes high impedance. If the switch is selected to be on, then the drain pin is pulled to the secondary supply voltage that was exceeded. Input signal levels up to +55 V or −55 V relative to ground are blocked, in both the powered and unpowered condition.

The low capacitance and charge injection of these switches make them ideal solutions for data acquisition and sample-and-hold applications, where low glitch switching and fast settling times are required. 

Note that, throughout this data sheet, multifunction pins, such as A0/F2, are referred to either by the entire pin name or by a single function of the pin, for example, A0, when only that function is relevant. 

APPLICATIONS

  • Analog input/output modules
  • Process control/distributed control systems
  • Data acquisition
  • Instrumentation
  • Avionics
  • Automatic test equipment
  • Communication systems
  • Relay replacement
    ADG5248F
    User Defined Fault Protection and Detection, 0.8 pC QINJ, 8:1 Multiplexer
    ADG5248F Functional Block Diagram ADG5248F Pin Configuration ADG5248F Pin Configuration
    Add to myAnalog

    Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

    Create New Project
    Ask a Question

    Documentation

    Data Sheet 1

    User Guide 1

    Application Note 2

    Technical Articles 1

    Learn More
    Add to myAnalog

    Add media to the Resources section of myAnalog, to an existing project or to a new project.

    Create New Project

    Software Resources

    Can't find the software or driver you need?

    Request a Driver/Software

    Tools & Simulations

    LTspice

    Models for the following parts are available in LTspice:

    • ADG5248F

    SPICE Model 1

    IBIS Model 1

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    Evaluation Kits

    EVAL-ADG5248F

    ADG5248F Evaluation Board

    Buy Now View Details

    Features and Benefits

    • Supply voltages
      Dual supply: ±5 V to ±22 V
      Single supply: 8 V to 44 V
    • Protected against overvoltage on source pins
      Signal voltages up to −55 V and +55 V
    • LEDs for visual overvoltage indication
    • Parallel interface compatible with 3 V logic
    • On-board LDO regulator for digital supply and control, if required

    Product Details

    The EVAL-ADG5248FEBZ, is the evaluation board for the ADG5248F, which features an overvoltage protected 8:1 Multiplexer. The ADG5248F has overvoltage detection and protection circuitry on the source pins and is protected against signals up to −55 V and +55 V in both the powered and unpowered states.


    The ADG5248F is soldered to the center of the evaluation board, and wire screw terminals are provided to connect to each of the source and drain pins. Three screw terminals are used to power the device, with a fourth terminal used to provide a user defined digital logic supply voltage, if required. Alternatively, a low dropout (LDO) regulator is provided for 5 V digital logic supply and to supply the LEDs, which are mounted to provide visual indication of the fault status of the switch.


    Full specifications on the ADG5248F are available in the product data sheet, which should be consulted in conjunction with this user guide when using the evaluation board.
    EVAL-ADG5248F
    ADG5248F Evaluation Board

    Latest Discussions

    2 Years Ago
    ADG5248F HBM ESD
    2 Years Ago
    Interceptor
    2 Years Ago
    ADG5248F spice model convergence issues.
    View related discussion on EngineerZone®

    Recently Viewed