ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The ISO772x devices are high-performance, dualchannel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7721B device is designed for applications that require basic insulation ratings only. The ISO772x devices provide high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO₂) insulation barrier. The ISO7720 device has both channels in the same direction while the ISO7721 device has both channels in the opposite direction. In the event of input power or signal loss, the default output is high for devices without suffix F and low for devices with suffix F. Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN, from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO772x devices has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO772x family of devices is available in 16-pin SOIC widebody (DW), 8-pin SOIC wide-body (DWV), and 8-pin SOIC narrow-body (D) packages.

Features

• 100 Mbps data rate
• Robust isolation barrier: >100 -Year projected lifetime at 1.5 kVRMS working voltage
• Up to 5000 VRMS Isolation Rating
• Up to 12.8 kV surge capability
• ±100 kV/μs Typical CMTI
• Wide supply range: 2.25 V to 5.5 V
• 2.25-V to 5.5-V level translation
• Default output High (ISO772x) and Low (ISO772xF) Options
• Wide temperature range: -55°C to +125°C
• Low power consumption, typical 1.7 mA per channel at 1 Mbps
• Low propagation delay: 11 ns typical
• Robust electromagnetic compatibility (EMC)
• System-Level ESD, EFT, and surge immunity
• ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
• Low emissions
• Wide-SOIC (DW-16, DWV-8) and Narrow-SOIC (D-8) package options
• Automotive Version Available: ISO772x-Q1
• Safety-related certifications: DIN VDE V 0884-11:2017-01 UL 1577 component recognition program CSA, CQC and TUV certifications

Applications

• Industrial automation
• Motor control
• Power supplies
• Solar inverters
• Medical equipment