Texas Instruments ISO7720 Bedienungsanleitung

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ISO772x High-Speed, Robust EMC, Reinforced and Basic Dual-Channel Digital

Isolators

1 Features

•100 Mbps data rate

•Robust isolation barrier:

–>30-Year projected lifetime at 1.5 kV

RMS

working voltage

–Up to 5000 V

RMS

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 EN IEC 60747-17 (VDE 0884-17)

–UL 1577 component recognition program

–IEC 61010-1, IEC 62368-1, IEC 60601-1, and

GB 4943.1 certifications

2 Applications

•Industrial automation

•Motor control

•Power supplies

•Solar inverters

•Medical equipment

3 Description

The ISO772x devices are high-performance, dual-

channel digital isolators with 5000 V

RMS

(DW and

DWV packages) and 3000 V

RMS

(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 (SiO

2

) 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. See the Device

Functional Modes section for further details.

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 wide-

body (DW), 8-pin SOIC wide-body (DWV), and 8-pin

SOIC narrow-body (D) packages.

Device Information

PART NUMBERPACKAGEBODY SIZE (NOM)

ISO7720, ISO7721

ISO7721F, ISO7721F

D (8)4.90 mm × 3.91 mm

DWV (8)5.85 mm × 7.50 mm

DW (16)10.30 mm × 7.50 mm

ISO7721B, ISO7721FBDW (16)10.30 mm × 7.50 mm

OUTx

GNDOGNDI

V

CCO

V

CCI

Series Isolation

Capacitors

Copyright © 2016, Texas Instruments Incorporated

INx

V

CCI

=Input supply, V

CCO

=Output supply

GNDI=Input ground, GNDO=Output ground

Simplified Schematic

ISO7720, ISO7721

SLLSEP3G – NOVEMBER 2016 – REVISED MAY 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen