User Defined Fault Protection and Detection, 0.8 pC Q , 8:1/Dual 4:1 Multiplexers INJ Data Sheet ADG5248F/ADG5249F FEATURES FUNCTIONAL BLOCK DIAGRAMS User defined secondary supplies set overvoltage level ADG5248F Overvoltage protection up to 55 V and +55 V S1 Power-off protection up to 55 V and +55 V Overvoltage detection on source pins Minimum secondary supply level: 4.5 V single-supply D Interrupt flags indicate fault status Low charge injection (Q ): 0.8 pC INJ S8 Low drain/source on capacitance ADG5248F: 19 pF FAULT DETECTION FF AND ADG5249F: 14 pF SF SWITCH DRIVER Latch-up immune under any circumstance A0 A1 A2 EN POSFV NEGFV Known state without digital inputs present V to V analog signal range Figure 1. ADG5248F Functional Block Diagram SS DD 5 V to 22 V dual-supply operation ADG5249F 8 V to 44 V single-supply operation S1A Fully specified at 15 V, 20 V, +12 V, and +36 V DA S4A APPLICATIONS Analog input/output modules S1B Process control/distributed control systems DB Data acquisition S4B Instrumentation FAULT DETECTION FF Avionics AND SF SWITCH DRIVER Automatic test equipment Communication systems A0 A1 EN POSFV NEGFV Relay replacement Figure 2. ADG5249F Functional Block Diagram The low capacitance and charge injection of these switches make GENERAL DESCRIPTION them ideal solutions for data acquisition and sample-and-hold The ADG5248F and ADG5249F are 8:1 and dual 4:1 analog applications, where low glitch switching and fast settling times multiplexers. The ADG5248F switches one of eight inputs to a are required. common output, and the ADG5249F switches one of four differen- Note that, throughout this data sheet, multifunction pins, such as tial inputs to a common differential output. Each channel conducts A0/F0, are referred to either by the entire pin name or by a single equally well in both directions when on, and each channel has an input signal range that extends to the supplies. The primary supply function of the pin, for example, A0, when only that function is voltages define the on-resistance profile, whereas the secondary relevant. supply voltages define the voltage level at which the overvoltage PRODUCT HIGHLIGHTS protection engages. 1. Source pins are protected against voltages greater than the When no power supplies are present, the channel remains in the off secondary supply rails, up to 55 V and +55 V. condition, and the switch inputs are high impedance. Under normal 2. Source pins are protected against voltages between 55 V operating conditions, if the analog input signal levels on any Sx pin and +55 V in an unpowered state. exceed positive fault voltage (POSFV) or negative fault voltage 3. Overvoltage detection with digital output indicates (NEGFV) by a threshold voltage (V ), the channel turns off and T operating state of switches. that Sx pin becomes high impedance. If the switch on, the drain pin 4. Trench isolation guards against latch-up. is pulled to the secondary supply voltage that was exceeded. Input 5. Optimized for low charge injection and on capacitance. signal levels up to +55 V or 55 V relative to ground are blocked, in 6. The ADG5248F/ADG5249F can be operated from a dual both the powered and unpowered conditions. supply of 5 V to 22 V or a single power supply of 8 V to 44 V. 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. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20152016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 13072-001 13072-002ADG5248F/ADG5249F Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ..................................................................................... 23 Applications ....................................................................................... 1 Terminology .................................................................................... 28 Functional Block Diagrams ............................................................. 1 Theory of Operation ...................................................................... 30 General Description ......................................................................... 1 Switch Architecture .................................................................... 30 Product Highlights ........................................................................... 1 User Defined Fault Protection .................................................. 31 Revision History ............................................................................... 2 Applications Information .............................................................. 32 Specif icat ions ..................................................................................... 3 Power Supply Rails ..................................................................... 32 15 V Dual Supply ....................................................................... 3 Power Supply Sequencing Protection ...................................... 32 20 V Dual Supply ....................................................................... 5 Signal Range ................................................................................ 32 12 V Single Supply ........................................................................ 7 Power Supply Recommendations ............................................. 32 36 V Single Supply ........................................................................ 9 High Voltage Surge Suppression .............................................. 32 Continuous Current per Channel, Sx, D, or Dx ..................... 12 Intelligent Fault Detection ........................................................ 33 Absolute Maximum Ratings .......................................................... 13 Large Voltage, High Frequency Signals ................................... 33 ESD Caution ................................................................................ 13 Outline Dimensions ....................................................................... 34 Pin Configurations and Function Descriptions ......................... 14 Ordering Guide .......................................................................... 34 Typical Performance Characteristics ........................................... 18 REVISION HISTORY 7/2016Rev. 0 to Rev. A Added 20-Lead LFCSP ....................................................... Universal Changes to Table 5 .......................................................................... 12 Changes to Table 6 .......................................................................... 13 Added Figure 4 Renumbered Sequentially ................................ 14 Changes to Table 7 .......................................................................... 14 Added Figure 6 ................................................................................ 16 Changes to Table 10 ........................................................................ 16 Updated Outline Dimensions ....................................................... 34 Changes to Ordering Guide .......................................................... 34 4/2015Revision 0: Initial Version Rev. A Page 2 of 34