ISO7221ADR
The image is for illustrative purposes only; please refer to the product data sheet for precise specifications.
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| Part Number | ISO7221ADR |
|---|---|
| Manufacturer |
 Texas Instruments
|
| Description | The ISO7221ADR is a dual-channel digital isolator based on capacitive isolation technology, designed to provide high-speed signal isolation with one forward and one reverse channel configuration. It supports data rates up to 25 Mbps and operates over a supply voltage range of 2.8V to 5.5V on both sides of the isolation barrier. The device provides isolation voltage up to 2500 Vrms and offers high common-mode transient immunity exceeding 25 kV/µs, ensuring reliable operation in noisy industrial environments. It features low propagation delay of approximately 10 ns and low pulse width distortion, enabling accurate high-speed data transmission. The IC consumes low power with typical supply current around 1.5–2 mA per channel and includes fail-safe default output functionality. Operating temperature range is -40°C to +125°C, and the SOIC-8 package enables compact PCB integration, making it suitable for SPI, UART, CAN interface isolation, industrial automation, and data acquisition systems. |
| Product Group | Isolated Amplifier |
| MOQ | 2500 pcs |
| SPQ | 2500 pcs |
| Figure/Case | 8-SOIC |
| Package | T&R Pack |
 PDF Datasheet | |
| Ship From | Hong Kong |
| Shipment Way | DHL / Fedex / TNT / UPS / Others |
| Delivery Term | Ex-Works |
| Send RFQ | sales@signalhk.com |
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
– 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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ISO7221ADR
ISO7221ADR