Data Sheet ADG7421FSPECIFICATIONSTable 4.Parameter+25°C−40°C to +85°C−40°C to +125°CUnitTest Conditions/Comments DYNAMIC CHARACTERISTICS tON 4.7 µs typ RL = 300 Ω, CL = 35 pF, VS = 1.5 V 6.3 7.3 7.3 µs max tOFF 250 ns typ RL = 300 Ω, CL = 35 pF, VS = 1.5 V 360 380 400 ns max tD 3.9 ns typ RL = 300 Ω, CL = 35 pF, VS = 1.5 V 2.9 ns min tRESPONSE Positive 1.7 µs typ RL = 1 kΩ, CL = 5 pF 2.1 2.2 2.4 µs max Negative 2 µs typ RPULLUP = 1 kΩ, CL = 5 pF 2.5 2.6 2.8 µs max tRECOVERY 9 µs typ RL = 1 kΩ, CL = 5 pF 14 18.4 18.4 µs max tDIGRESP 400 ns typ RPULLUP = 1 kΩ, CL = 12 pF, VPULL_UP = 1.8 V 450 500 500 ns max tDIGREC 1 µs typ RPULLUP = 1 kΩ, CL = 12 pF, VPULL_UP = 1.8 V 1.2 1.3 1.3 µs max QINJ −25 pC typ VS = 0.9 V, RS = 0 Ω, CL = 1 nF Off Isolation −60 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz Channel to Channel Crosstalk −68 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz THD + N −97 dB typ RL = 10 kΩ, VS = 1.5 V p-p, f = 20 Hz to 20 kHz 0.0012 % typ THD −130 dB typ RL = 10 kΩ, VS = 1.5 V p-p, f = 1 kHz −121 dB typ RL = 10 kΩ, VS = 1.5 V p-p, f = 20 kHz −110 dB typ RL = 10 kΩ, VS = 1.5 V p-p, f = 100 kHz −3 dB Bandwidth 550 MHz RL = 50 Ω, CL = 5 pF typ Insertion Loss −0.92 dB typ RL = 50 Ω, CL = 5 pF, f = 1 MHz CS (Off) 13 pF typ VS = 1 V, f = 1 MHz CD (Off) 14 pF typ VS = 1 V, f = 1 MHz CD (On), CS (On) 14 pF typ VS = 1 V, f = 1 MHz CSFLAT(On), CDFLAT(On) 0.8 pF typ VS = 0.1 V to 1.61 V, f = 1 MHz CMATCH(On) 0.2 pF typ VS = 0.1 V to 1.61 V, f = 1 MHz POWER REQUIREMENTS VDD = 1.95 V, VSS = 0 V, GND = 0 V, digital inputs = GND or VDD Normal Mode IDD 480 µA typ 700 700 µA max IGND 400 µA typ 600 600 µA max ISS 80 µA typ 125 125 µA max Fault Mode VS = ±60 V IDD 520 µA typ 800 800 µA max IGND 320 µA typ 550 550 µA max ISS 175 µA typ analog.comRev. 0 | 8 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