Products Isolated Amplifier ISO7221ADR



ISO7221ADR


Part Number ISO7221ADR
Manufacturer Texas Instruments
Description General Purpose Digital Isolator 2500Vrms 2 Channel 1Mbps 25kV/µs CMTI 8-SOIC (0.154inch, 3.90mm Width), Dual-Channel Digital Isolators
Product Group Isolated Amplifier
MOQ 2500 pcs
SPQ 2500 pcs
Figure/Case 8-SOIC
Package T&R Pack
PDF PDF Datasheet
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Shipment Way DHL / Fedex / TNT / UPS / Others
Delivery Term Ex-Works
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The ISO7220x and ISO7221x family devices are dual channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220x and in opposite directions in the ISO7221x. These devices have a logic input and output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 VPK per VDE. Used in conjunction with isolated power supplies, these devices block high voltage and isolate grounds, as well as prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.

A binary input signal is conditioned, translated to a balanced signal, then differentiated by the capacitive isolation barrier. Across the isolation barrier, a differential comparator receives the logic transition information, then sets or resets a flip-flop and the output circuit accordingly. A periodic update pulse is sent across the barrier to verify that the proper dc level of the output. If this dc-refresh pulse is not received every 4 μs, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state.

• 1, 5, 25, and 150Mbps Signaling Rate Options
    – Low Channel-to-Channel Output Skew; 1ns Max
   – Low Pulse-Width Distortion (PWD); 1ns Max
   – Low Jitter Content; 1ns Typ at 150Mbps
• 50kV/μs Typical Transient Immunity
• Operates with 2.8V (C-Grade), 3.3V, or 5V Supplies
• 4kV ESD Protection
• High Electromagnetic Immunity
• –40°C to +125°C Operating Range
• Typical 28-Year Life at Rated Voltage(see Isolation Lifetime Projection)
• Safety-Related Certifications
   – DIN EN IEC 60747-17 (VDE 0884-17)
   – UL 1577 component recognition program
   – IEC 61010-1, IEC 62368-1 certifications





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