User Defined Fault Protection and Detection, 0.8 pC Q , Triple SPDT INJ Data Sheet ADG5243F FEATURES FUNCTIONAL BLOCK DIAGRAM User defined supplies set overvoltage level ADG5243F S1A Overvoltage protection up to 55 V and +55 V D1 Power-off protection up to 55 V and +55 V S1B S3B Overvoltage detection on source pins D3 S3A Minimum secondary supply level: 4.5 V single-supply S2B D2 Interrupt flags indicate fault status S2A Low charge injection (Q ): 0.8 pC INJ FAULT FF Low drain/source on capacitance: 10 pF DETECTION AND SWITCH SF Latch-up immune under any circumstance DRIVER Known state without digital inputs present V to V analog signal range SS DD 5 V to 22 V dual supply operation NOTES 8 V to 44 V single-supply operation 1. SWITCHES SHOWN FOR INPUT LOGIC 1. Fully specified at 15 V, 20 V, +12 V, and +36 V Figure 1. APPLICATIONS Analog input/output modules Process control/distributed control systems Data acquisition Instrumentation Avionics Automatic test equipment Communication systems Relay replacement GENERAL DESCRIPTION The ADG5243F comprises three independently selectable, single- The low capacitance and charge injection of these switches pole/double-throw (SPDT) switches. All channels exhibit break- make them ideal solutions for data acquisition and sample-and- before-make switching action that prevents momentary shorting hold applications, where low glitch switching and fast settling EN times are required. when switching channels. An input enables or disables the device. When disabled, all channels are switched off. Each switch Note that, throughout this data sheet, multifunction pins, such conducts equally well in both directions when on, and each as IN1/F1, are referred to either by the entire pin name or by a switch has an input signal range that extends to the supplies. single function of the pin, for example, IN1, when only that The primary supply voltages define the on-resistance profile, function is relevant. whereas the secondary supply voltages define the voltage level at PRODUCT HIGHLIGHTS which the overvoltage protection engages. 1. The source pins are protected against voltages greater than When no power supplies are present, the channel remains in the the secondary supply rails, up to 55 V and +55 V. off condition, and the switch inputs are high impedance. Under 2. The source pins are protected against voltages between normal operating conditions, if the analog input signal levels on 55 V and +55 V in an unpowered state. any Sx pin exceed the positive fault voltage (POSFV) or the 3. Overvoltage detection with the digital output indicates the negative fault voltage (NEGFV) by a threshold voltage (V ), the T operating state of the switches. channel turns off and that Sx pin becomes high impedance. If 4. Trench isolation guards against latch-up. the switch is selected to be on, then the drain pin is pulled to the 5. Optimized for low charge injection and on-capacitance. secondary supply voltage that was exceeded. Input signal levels up 6. The ADG5243F can be operated from a dual supply of 5 V to 55 V or +55 V relative to ground are blocked, in both the to 22 V or a single power supply of 8 V to 44 V. powered and unpowered conditions. Rev. A 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. 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IN1 IN2 IN3 EN POSFV NEGFV 13073-001ADG5243F Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ..................................................................................... 20 Applications ....................................................................................... 1 Terminology .................................................................................... 24 Functional Block Diagram .............................................................. 1 Theory of Operation ...................................................................... 26 General Description ......................................................................... 1 Switch Architecture .................................................................... 26 Product Highlights ........................................................................... 1 User Defined Fault Protection .................................................. 27 Revision History ............................................................................... 2 Applications Information .............................................................. 28 Specifications ..................................................................................... 3 Power Supply Rails ..................................................................... 28 15 V Dual Supply ....................................................................... 3 Power Supply Sequencing Protection ...................................... 28 20 V Dual Supply ....................................................................... 5 Signal Range ................................................................................ 28 12 V Single Supply ........................................................................ 7 Power Supply Recommendations ............................................. 28 36 V Single Supply ........................................................................ 9 High Voltage Surge Suppression .............................................. 28 Continuous Current per Channel, Sx or Dx ........................... 11 Intelligent Fault Detection ........................................................ 28 Absolute Maximum Ratings .......................................................... 12 Large Voltage, High Frequency Signals ................................... 29 ESD Caution ................................................................................ 12 Outline Dimensions ....................................................................... 30 Pin Configurations and Function Descriptions ......................... 13 Ordering Guide .......................................................................... 30 Typical Performance Characteristics ........................................... 15 REVISION HISTORY 8/2016Rev. 0 to Rev. A Added LFCSP Package ....................................................... Universal Updated Outline Dimensions ....................................................... 30 Changes to Ordering Guide .......................................................... 30 10/2015Revision 0: Initial Version Rev. A Page 2 of 30