Datasheet ADG7421F (Analog Devices) - 2

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ADG7421F TABLE OF CONTENTS
Features.. 1 Test Circuits... 19 Applications... 1 Terminology... 22 Companion Products... 1 Theory of Operation...24 Functional Block Diagram..1 Switch Architecture...24 General Description...1 Overvoltage Fault Protection..24 Product Highlights... 1 Applications Information.. 26 Specifications.. 3 Power Supply Rails.. 26 5 V Single Supply...3 Power Supply Recommendations.. 26 3 V Single Supply...5 Power Supply Sequencing Protection.. 26 1.8 V Single Supply..7 Signal Range..26 ±2.5 V Dual Supply...9 Intelligent Fault Detection...26 Continuous Current per Channel, Sx or Dx, Short Duration Fault Current.. 26 Two Channels On .. 11 Thermocouple Input Protection.. 27 Absolute Maximum Ratings...12 RTD Input Protection..28 Thermal Resistance... 12 Switches in a Known State...29 Electrostatic Discharge (ESD) Ratings...12 High Voltage Suppression..29 ESD Caution...12 Outline Dimensions... 30 Pin Configuration and Function Descriptions.. 13 Ordering Guide...30 Typical Performance Characteristics... 14
REVISION HISTORY 7/2021—Revision 0: Initial Version analog.com Rev. 0 | 2 of 30
Document Outline Features Applications Companion Products Functional Block Diagram General Description Product Highlights Specifications 5 V Single Supply 3 V Single Supply 1.8 V Single Supply ±2.5 V Dual Supply Continuous Current per Channel, Sx or Dx, Two Channels On Absolute Maximum Ratings Thermal Resistance Electrostatic Discharge (ESD) Ratings ESD Ratings for ADG7421F ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Terminology IDD ISS VD, VS RON RFLAT (ON) IS (Off) ID (Off) ID (On), IS (On) VINL VINH IINL, IINH CD (Off) CS (Off) CD (On), CS (On) CIN tON tOFF tDIGRESP tDIGREC tRESPONSE tRECOVERY Off Isolation Charge Injection −3 dB Bandwidth On Response Insertion Loss THD + N AC Power Supply Rejection Ratio (AC PSRR) VT Theory of Operation Switch Architecture ESD Performance Trench Isolation Overvoltage Fault Protection Power-On Protection Power-Off Protection Overvoltage Interrupt Flag Applications Information Power Supply Rails Power Supply Recommendations Power Supply Sequencing Protection Signal Range Intelligent Fault Detection Short Duration Fault Current Thermocouple Input Protection RTD Input Protection Switches in a Known State High Voltage Suppression Outline Dimensions Ordering Guide