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ISO721MDRG4

ISO721MDRG4

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SOIC8_150MIL

  • 描述:

    DGTL ISO 2.5KV GEN PURP 8SOIC

  • 数据手册
  • 价格&库存
ISO721MDRG4 数据手册
Product Folder Sample & Buy Tools & Software Technical Documents Support & Community Reference Design ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 ISO72x Single Channel High-Speed Digital Isolators 1 Features • • • • • • • • 1 • • • • 100 and 150-Mbps Signaling Rate Options Low Propagation Delay Low Pulse Skew Low-Power Sleep Mode High Electromagnetic Immunity Low Input-Current Requirement Failsafe Output Drop-In Replacement for Most Opto and Magnetic Isolators Operates from 3.3 V and 5 V Supplies -40°C to 125°C Operating Temperature Range 50 kV/µs Transient Immunity, Typical Safety and Regulatory Approvals – VDE Basic Insulation with 4000-VPK VIOTM, 560 VPK VIORM – 2500 VRMS Isolation per UL 1577 – CSA Approved for Component Acceptance Notice 5A and IEC 60950-1 2 Applications • • • • Industrial Fieldbus – Modbus – Profibus – DeviceNet™ Data Buses – Smart Distributed Systems (SDS™) Computer Peripheral Interface Servo Control Interface Data Acquisition If this dc-refresh pulse is not received for more than 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. The symmetry of the dielectric and capacitor within the integrated circuitry provides for close capacitive matching, and allows fast transient voltage changes between the input and output grounds without corrupting the output. The small capacitance and resulting time constant provide for fast operation with signaling rates from 0 Mbps (DC) to 100 Mbps for the ISO721 and the ISO722 devices, and 0 Mbps to 150 Mbps with the ISO721M and the ISO722M devices. These devices require two supply voltages of 3.3 V, 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply and all outputs are 4 mA CMOS. The ISO722 and ISO722M devices include an activelow output enable that when driven to a high logic level, places the output in a high-impedance state and turns off internal bias circuitry to conserve power. Both the ISO721 and ISO722 devices have TTL input thresholds and a noise filter at the input that prevent transient pulses of up to 2 ns in duration from being passed to the output of the device. The ISO721M and ISO722M devices have CMOS VCC / 2 input thresholds, but do not have the noisefilter and the additional propagation delay. These features of the ISO721M device also provide for reduced-jitter operation. The ISO721, ISO721M, ISO722, and ISO722M devices are characterized for operation over the ambient temperature range of –40°C to 125°C. Device Information(1) 3 Description The ISO721, ISO721M, ISO722, and ISO722M are digital isolators with a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. This barrier provides galvanic isolation of up to 4000 VPK per VDE. Used in conjunction with isolated power supplies, these devices 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 ensure the proper dc level of the output. PART NUMBER ISO721 PACKAGE BODY SIZE (NOM) SOP (8) 9.50mm x 6.57mm SOIC (8) 4.90mm x 3.91mm ISO721 ISO721M ISO722 ISO722M (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Schematic VCC1 VCC2 Isolation Capacitor IN OUT EN (ISO722/M-only) GND1 GND2 1 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. ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Device Comparison Table..................................... Pin Configuration and Functions ......................... Specifications......................................................... 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.11 7.12 7.13 7.14 1 1 1 2 4 4 5 Absolute Maximum Ratings ..................................... 5 ESD Ratings ............................................................ 5 Recommended Operating Conditions....................... 5 Thermal Information .................................................. 6 Electrical Characteristics, 5 V ................................... 6 Electrical Characteristics, 5 V, 3.3 V......................... 7 Electrical Characteristics, 3.3 V, 5 V......................... 7 Electrical Characteristics, 3.3 V ............................... 8 Power Dissipation ..................................................... 8 Switching Characteristics, 5 V ................................ 9 Switching Characteristics, 5 V, 3.3 V.................... 10 Switching Characteristics, 3.3 V, 5 V.................... 11 Switching Characteristics, 3.3 V .......................... 12 Typical Characteristics .......................................... 13 8 9 Parameter Measurement Information ................ 15 Detailed Description ............................................ 18 9.1 9.2 9.3 9.4 Overview ................................................................. Functional Block Diagram ....................................... Features Description ............................................... Device Functional Modes........................................ 18 18 19 21 10 Application and Implementation........................ 22 10.1 Application Information.......................................... 22 10.2 Typical Application ................................................ 22 11 Power Supply Recommendations ..................... 24 12 Layout................................................................... 24 12.1 Layout Guidelines ................................................. 24 12.2 Layout Example .................................................... 25 13 Device and Documentation Support ................. 26 13.1 13.2 13.3 13.4 13.5 Documentation Support ....................................... Related Links ........................................................ Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 26 26 26 26 26 14 Mechanical, Packaging, and Orderable Information ........................................................... 26 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision K (February 2012) to Revision L Page • Moved Power Dissipation metric into new table, called Power Dissipation .......................................................................... 8 • Added header row above "VIORM" row with the text "DIN V VDE V 0884-10 (VDE V 0884-10):2006-12" in the Insulation Characteristics table............................................................................................................................................. 19 • Added "UL 1577" header row over "VISO" row in the Insulation Characteristics table. ........................................................ 19 • Moved "VISO" row to the bottom of the Insulation Characteristics table. ............................................................................. 19 • Deleted "per UL" in "Isolation voltage" in the Insulation Characteristics table. ................................................................... 19 • Changed the D-8 MIN value of L(101) from "4.8" to "4" in the Package Insulation Characteristics table. ......................... 20 • Changed the D-8 MIN value of L(102) from "4.3" to "4" in the Package Insulation Characteristics table. ......................... 20 • Changed Test Condition "DIN IEC 60112/VDE 0303 Part 1" to "DIN EN 60112 (VDE 0303-11); IEC 60112" in the Package Insulation Characteristics table. ............................................................................................................................ 20 • Deleted bottom row of the Package Insulation Characteristics table. ................................................................................. 20 Changes from Revision J (July 2010) to Revision K Page • Added ESD Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information............................................................................................................... 1 • Changed the Title From: 3.3-V / 5-V High-Speed Digital Isolators To: ISO72x Single Channel High-Speed Digital Isolators .................................................................................................................................................................................. 1 • Changed the Features List .................................................................................................................................................... 1 • Changed the second paragraph of the Description From: "4000 V" To: "4000 VPK per VDE..."............................................ 1 • Changed the Thermal Information table ................................................................................................................................. 6 • Changed Figure 1................................................................................................................................................................. 13 • Changed the Basic isolation group Specification From: IIIa To: II in IEC 60664-1 Ratings Table....................................... 19 2 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 • Changed VDE text From: "DIN EN 60747-5-5 (VDE 0884-5)" To: "DIN V VDE V 0884-10 (VDE V 0884-10):2006-12" in the Regulatory Information table....................................................................................................................................... 19 • Changed CSA File number: 1698195 To: 220991 in the Regulatory Information table....................................................... 19 • Changed the CTI MIN value From: ≥ 175 V To: 400 V in the Package Insulation Characteristics table.............................. 20 • Changed RIO Test Condition From: TA < 100°C To: TA = 25°C in Package Insulation Characteristics .............................. 20 • Moved the RIO values from the TYP column to the MIN column of Package Insulation Characteristics ............................ 20 • Changed the title of Figure 16 From: θJC Thermal Derating Curve per DIN EN 60747-5-5 To: θJC Thermal Derating Curve per VDE ..................................................................................................................................................................... 20 • Changed Table 1, added row X, PD, X, Undetermined ....................................................................................................... 21 • Changed Table 2, added row X, PD, X, Undetermined ....................................................................................................... 21 • Changed Figure 17 .............................................................................................................................................................. 21 Changes from Revision I (February 2010) to Revision J Page • Changed Note 1 of the Electrical Characteristics, 5 V table .................................................................................................. 6 • Changed Note 1 of the Electrical Characteristics, 5 V, 3.3 V table........................................................................................ 7 • Changed Note 1 of the Electrical Characteristics, 3.3 V, 5 V table........................................................................................ 7 • Changed Note 1 of the Electrical Characteristics, 3.3 V table ............................................................................................... 8 • Changed V to Vpeak in UNIT column of IEC Insulation Characteristics table ..................................................................... 19 • Added row for VISO to Insulation Characteristics table ......................................................................................................... 19 • Changed the title From: Package Characteristics To: Package Insulation Characteristics ................................................. 20 Changes from Revision H (June 2009) to Revision I • Page Changed Features From: 50 kV/s Transient Immunity, Typical To: 50 kV/µs Transient Immunity, Typical .......................... 1 Changes from Revision G (December 2008) to Revision H Page • Changed the first paragraph of the Description From: "silicon oxide (SiO2).." To: "silicon dioxide (SiO2)..".......................... 1 • Added the DUB 8 pin package to the Pin Configuration and Functions ................................................................................ 4 • Added package designators D-8 and DUB-8 to the table Descriptions/Test Conditions of the Package Insulation Characteristics table ............................................................................................................................................................. 20 Changes from Revision F (November 2008) to Revision G • Page Changed the Features List From: 4000-V(peak) Isolation To: 4000-V(peak) Isolation, 560-Vpeak VIORM ...................................... 1 Changes from Revision E (May 2008) to Revision F Page • Changed Figure 19 text From: 20 mm max. from VCC1 To: 2 mm max. from VCC1 .............................................................. 23 • Changed Note in Table 3 From: The ISO72x pin 1 and pin 3 are internally connected together. Either or both may be used as VCC1. To: Pin 1 should be used as VCC1. Pin 3 may also be used as VCC1 or left open as long as Pin 1 is connected to VCC1 ................................................................................................................................................................ 23 • Changed Note in Table 3 From: The ISO721 and ISO721M pin 5 and pin 7 are internally connected together. Either or both may be used as GND2. To: Pin 5 should be used as GND2. Pin 7 may also be used as GND2 or left open as long as Pin 5 is connected to GND2. .............................................................................................................................. 23 Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 3 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com Changes from Revision D (February 2007) to Revision E Page • Changed changed the VCC MIN value From: 4.5 V To: 3 V in the Recommended Operating Conditions table ................... 5 • Added Note 1 to the Recommended Operating Conditions table .......................................................................................... 5 • Added Note 1 to the Electrical Characteristics, 5 V table....................................................................................................... 6 • Added Note 1 to the Electrical Characteristics, 5 V, 3.3 V table ........................................................................................... 7 • Added Note 1 to the Electrical Characteristics, 3.3 V, 5 V table ............................................................................................ 7 • Added Note 1 to the Electrical Characteristics, 3.3 V table.................................................................................................... 8 4 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 5 Device Comparison Table PRODUCT SIGNALING RATE OUTPUT ENABLED INPUT THRESHOLDS NOISE FILTER ISO721 100 Mbps NO TTL YES ISO721M 150 Mbps NO CMOS NO ISO722 100 Mbps YES TTL YES ISO722M 150 Mbps YES CMOS NO 6 Pin Configuration and Functions 1 IN 2 VCC1 3 GND1 4 ISO722, ISO722M SOIC (D) Package Top View 8 VCC2 7 GND2 6 OUT 5 VCC1 1 IN 2 VCC1 3 GND1 4 GND2 Isolation VCC1 Isolation ISO721, ISO721M SOIC (D) Package Top View 8 VCC2 7 EN 6 OUT 5 GND2 VCC1 1 IN 2 VCC1 3 GND1 4 Isolation ISO721 SOP (DUB) Package Top View 8 VCC2 7 GND2 6 OUT 5 GND2 Pin Functions PIN ISO721x NO. ISO722x NO. I/O VCC1 1, 3 1, 3 - Power supply, VCC1 VCC2 8 8 - Power supply, VCC2 IN 2 2 I Input OUT 6 6 O Output EN - 7 I Output enable. OUT is enabled when EN is low or disconnected and disabled when EN is high. GND1 4 4 - Ground connection for VCC1 GND2 5, 7 5 - Ground connection for VCC2 NAME Copyright © 2006–2015, Texas Instruments Incorporated DESCRIPTION Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 5 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) VCC Supply voltage VCC1, VCC2 MAX 6 V VCC + 0.5 (2) Input voltage IO Output current ±15 mA TJ Maximum junction temperature 170 °C Tstg Storage temperature 150 °C (2) –0.5 UNIT VI (1) IN, OUT, or EN MIN –0.5 –65 V Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Maximum voltage must not exceed 6 V. 7.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±2000 Charged device model (CDM), per JEDEC specification JESD22C101 (2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions MIN Supply voltage (1), VCC1, VCC2 VCC IOH Input pulse duration 1 / tui Signaling Rate VIH High-level input voltage (IN, EN) VIL Low-level input voltage (IN, EN) VIH High-level input voltage (IN, EN) VIL Low-level input voltage (IN, EN) TA Ambient temperature TJ Junction temperature H External magnetic field intensity per IEC 61000-4-8 and IEC 61000-4-9 certification 6 5.5 –4 ISO72x tui (1) MAX 4 Output current IOL TYP 3 ISO72xM UNIT V mA mA 10 ns 6.67 ISO72x 0 100 ISO72xM 0 150 2 5.5 V ISO72x IOS72xM Mbps 0 0.8 V 0.7 VCC VCC V 0 0.3 VCC V 125 °C 150 °C 1000 A/m –40 See Thermal Information 25 For the 5-V operation, VCC1 or VCC2 is specified from 4.5 V to 5.5 V. For the 3-V operation, VCC1 or VCC2 is specified from 3 V to 3.6 V. Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 7.4 Thermal Information ISO721 THERMAL METRIC (1) RθJA Junction-to-ambient thermal resistance ISO72x DUB D 8 PINS 8 PINS UNIT High-K Board 86.6 114.7 Low-K Board N/A 263 °C/W RθJC(top) Junction-to-case (top) thermal resistance 70.3 63 °C/W RθJB Junction-to-board thermal resistance 50.2 54.8 °C/W ψJT Junction-to-top characterization parameter 34.3 18.9 °C/W ψJB Junction-to-board characterization parameter 49.8 54.3 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A °C/W (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 7.5 Electrical Characteristics, 5 V VCC1 and VCC2 at 5 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER ICC1 VCC1 supply current TEST CONDITIONS Quiescent 25 Mbps ISO722/722M Sleep Mode ICC2 VCC2 supply current VI = VCC or 0 V, no load Quiescent 25 Mbps VI = VCC or 0 V, no load High-level output voltage VOL Low-level output voltage TYP MAX 0.5 1 2 4 EN at VCC VI = VCC or 0 V, No load VOH MIN 200 EN at 0 V or ISO721/721M 8 12 10 14 IOH = –4 mA, See Figure 10 VCC – 0.8 4.6 IOH = –20 μA, See Figure 10 VCC – 0.1 5 0.2 0.4 IOL = 20 μA, See Figure 10 0 0.1 150 IIH High-level input current EN, IN at 2 V IIL Low-level input current EN, IN at 0.8 V IOZ High-impedance output current CI Input capacitance to ground IN at VCC, VI = 0.4 sin (4 × 106πt) CMTI Common-mode transient immunity VI = VCC or 0 V, See Figure 14 ISO722, ISO722M Copyright © 2006–2015, Texas Instruments Incorporated 10 1 25 mA V μA μA 1 pF 50 kV/μs Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M μA mV –10 EN, IN at VCC mA V IOL = 4 mA, See Figure 10 VI(HYS) Input voltage hysteresis UNIT 7 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 7.6 Electrical Characteristics, 5 V, 3.3 V VCC1 at 5 V ± 10%, VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER ICC1 VCC1 supply current TEST CONDITIONS Quiescent 25 Mbps ISO722/722M Sleep mode ICC2 VCC2 supply current Quiescent 25 Mbps VOH High-level output voltage VOL Low-level output voltage MIN VI = VCC or 0 V, no load VI = VCC or 0 V, No load TYP MAX 0.5 1 2 4 EN at VCC 150 EN at 0 V or ISO721/721M VI = VCC or 0 V, no load 4 6.5 5 7.5 IOH = –4 mA, See Figure 10 VCC – 0.4 3 IOH = –20 μA, See Figure 10 VCC – 0.1 3.3 0.2 0.4 IOL = 20 μA, See Figure 10 0 0.1 150 IIH High-level input current EN, IN at 2 V IIL Low-level input current EN, IN at 0.8 V IOZ High-impedance output current ISO722, ISO722M EN, IN at VCC 1 Input capacitance to ground IN at VCC, VI = 0.4 sin (4 × 10 πt) CMTI Common-mode transient immunity VI = VCC or 0 V, See Figure 14 25 mA V μA μA –10 CI μA mV 10 6 mA V IOL = 4 mA, See Figure 10 VI(HYS) Input voltage hysteresis UNIT μA 1 pF 40 kV/μs 7.7 Electrical Characteristics, 3.3 V, 5 V VCC1 at 3.3 V ± 10%, VCC2 at 5 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER ICC1 VCC1 supply current TEST CONDITIONS Quiescent 25 Mbps ISO722/722M Sleep mode ICC2 VCC2 supply current Quiescent 25 Mbps VOH High-level output voltage VOL Low-level output voltage MIN VI = VCC or 0 V, no load MAX 0.3 0.5 1 2 EN at VCC VI = VCC or 0 V, No load 200 EN at 0 V or ISO721/721 M VI = VCC or 0 V, No load 8 12 10 14 IOH = –4 mA, See Figure 10 VCC – 0.8 4.6 IOH = –20 μA, See Figure 10 VCC – 0.1 5 0.2 0.4 IOL = 20 μA, See Figure 10 0 0.1 150 IIH High-level input current EN, IN at 2 V IIL Low-level input current EN, IN at 0.8 V IOZ High-impedance output current ISO722, ISO722M EN, IN at VCC 1 Input capacitance to ground IN at VCC, VI = 0.4 sin (4 × 10 πt) CMTI Common-mode transient immunity VI = VCC or 0 V, See Figure 14 Submit Documentation Feedback 25 μA mA V μA μA –10 CI mA mV 10 6 UNIT V IOL = 4 mA, See Figure 10 VI(HYS) Input voltage hysteresis 8 TYP μA 1 pF 40 kV/μs Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 7.8 Electrical Characteristics, 3.3 V VCC1 and VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER ICC1 VCC1 supply current TEST CONDITIONS Quiescent 25 Mbps VI = VCC or 0 V, no load ISO722/722M Sleep Mode ICC2 VCC2 supply current Quiescent 25 Mbps VOH High-level output voltage VOL Low-level output voltage MIN TYP MAX 0.3 0.5 1 2 EN at VCC VI = VCC or 0 V, No load 150 EN at 0 V or ISO721/721 M VI = VCC or 0 V, no load 4 6.5 5 7.5 IOH = –4 mA, See Figure 10 VCC – 0.4 3 IOH = –20 μA, See Figure 10 VCC – 0.1 3.3 0.2 0.4 IOL = 20 μA, See Figure 10 0 0.1 150 IIH High-level input current EN, IN at 2 V IIL Low-level input current EN, IN at 0.8 V IOZ High-impedance output current CI Input capacitance to ground IN at VCC, VI = 0.4 sin (4 × 106πt) CMTI Common-mode transient immunity VI = VCC or 0 V, See Figure 14 ISO722, ISO722M mA μA mA V IOL = 4 mA, See Figure 10 VI(HYS) Input voltage hysteresis UNIT V mV 10 μA μA –10 EN, IN at VCC 1 25 μA 1 pF 40 kV/μs 7.9 Power Dissipation over operating free-air temperature range (unless otherwise noted) PARAMETER PD Power Dissipation Copyright © 2006–2015, Texas Instruments Incorporated TEST CONDITIONS ISO721 DUB 8 PINS ISO72x D 8 PINS UNIT ISO72x VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, Input a 100-Mbps 50% duty-cycle square wave 159 mW ISO72xM VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, Input a 100-Mbps 50% duty-cycle square wave 195 mW ISO721 VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, Input a 100-Mbps 50% duty-cycle square wave 159 Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M mW 9 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 7.10 Switching Characteristics, 5 V VCC1 and VCC2at 5 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER TEST CONDITIONS tPLH Propagation delay, low-to-high-level output tPHL Propagation delay, high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tPLH Propagation delay, low-to-high-level output tPHL Propagation delay, high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tsk(pp) (1) Part-to-part skew tr Output signal rise time tf Output signal fall time tpHZ Sleep-mode propagation delay, high-level-to-high-mpedance output Sleep-mode propagation delay, high-impedance-to-high-level output tpLZ Sleep-mode propagation delay, low-level-to-high-impedance output 13 17 24 ns 13 17 24 ns 0.5 2 ns 10 16 ns 8 ISO72xM 8 10 16 ns 1 ns 0 3 ns ns 1 6 8 15 ns 3.5 4 8 μs 5.5 8 15 ns 4 5 8 μs See Figure 12 tfs Failsafe output delay time from input power loss See Figure 13 3 100-Mbps NRZ data input, See Figure 15 2 100-Mbps unrestricted bit run length data input, See Figure 15 3 150-Mbps NRZ data input, See Figure 15 1 ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 15 2 ISO72x Peak-to-peak eye-pattern jitter UNIT 0.5 1 ISO722 ISO722M Sleep-mode propagation delay, high-impedance-to-low-level output 10 MAX See Figure 11 tpZL (1) EN at 0 V, See Figure 10 TYP EN at 0 V, See Figure 10 tpZH tjit(PP) ISO72x MIN μs ns tsk(PP) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits. Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 7.11 Switching Characteristics, 5 V, 3.3 V VCC1 at 5 V ± 10%, VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER TEST CONDITIONS tPLH Propagation delay, low-to-high-level output tPHL Propagation delay , high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tPLH Propagation delay, low-to-high-level output tPHL Propagation delay, high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tsk(pp) (1) Part-to-part skew tr Output signal rise time tf Output signal fall time tpHZ Sleep-mode propagation delay, high-level-to-high-mpedance output Sleep-mode propagation delay, high-impedance-to-high-level output tpLZ Sleep-mode propagation delay, low-level-to-high-impedance output MAX 15 19 30 ns 15 19 30 ns 0.5 3 ns 12 20 ns 10 ISO72xM 10 ISO722 ISO722M 12 20 ns 0.5 1 ns 0 5 ns 2 ns 2 ns 7 11 25 ns 4.5 6 8 μs 7 13 25 ns 4.5 6 8 μs See Figure 12 Sleep-mode propagation delay, high-impedance-to-low-level output tfs Failsafe output delay time from input power loss See Figure 13 3 100-Mbps NRZ data input, See Figure 15 2 100-Mbps unrestricted bit run length data input, See Figure 15 3 150-Mbps NRZ data input, See Figure 15 1 ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 15 2 ISO72x Peak-to-peak eye-pattern jitter UNIT See Figure 11 tpZL (1) EN at 0 V, See Figure 10 TYP EN at 0 V, See Figure 10 tpZH tjit(PP) ISO72x MIN μs ns tsk(PP) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits. Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 11 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 7.12 Switching Characteristics, 3.3 V, 5 V VCC1 at 3.3 V ± 10%, VCC2 at 5 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER TEST CONDITIONS tPLH Propagation delay, low-to-high-level output tPHL Propagation delay , high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tPLH Propagation delay, low-to-high-level output tPHL Propagation delay, high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tsk(pp) (1) Part-to-part skew tr Output signal rise time tf Output signal fall time tpHZ Sleep-mode propagation delay, high-level-to-high-mpedance output Sleep-mode propagation delay, high-impedance-to-high-level output tpLZ Sleep-mode propagation delay, low-level-to-high-impedance output 17 30 ns 15 17 30 ns 0.5 2 ns 12 21 ns 10 10 ISO722 ISO722M tfs Failsafe output delay time from input power loss 21 ns 1 ns 0 5 ns 1 ns 1 ns 7 9 15 ns 4.5 5 8 μs 7 9 15 ns 4.5 5 8 μs See Figure 13 3 100-Mbps NRZ data input, See Figure 15 2 100-Mbps unrestricted bit run length data input, See Figure 15 3 150-Mbps NRZ data input, See Figure 15 1 ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 15 2 ISO72x Peak-to-peak eye-pattern jitter 12 0.5 See Figure 12 Sleep-mode propagation delay, high-impedance-to-low-level output 12 ISO72xM UNIT See Figure 11 tpZL (1) EN at 0 V, See Figure 10 TYP MAX 15 EN at 0 V, See Figure 10 tpZH tjit(PP) ISO72x MIN μs ns tsk(PP) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits. Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 7.13 Switching Characteristics, 3.3 V VCC1 and VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted.) PARAMETER TEST CONDITIONS tPLH Propagation delay, low-to-high-level output tPHL Propagation delay , high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tPLH Propagation delay, low-to-high-level output tPHL Propagation delay, high-to-low-level output tsk(p) Pulse skew |tPHL – tPLH| tsk(pp) (1) Part-to-part skew tr Output signal rise time tf Output signal fall time tpHZ Sleep-mode propagation delay, high-level-to-high-mpedance output Sleep-mode propagation delay, high-impedance-to-high-level output tpLZ Sleep-mode propagation delay, low-level-to-high-impedance output 20 34 ns 17 20 34 ns 0.5 3 ns 12 25 ns 10 ISO72xM 10 12 25 ns 0.5 1 ns 0 5 ns 2 ns 2 ISO722 ISO722M 7 13 25 ns 5 6 8 µs 7 13 25 ns 5 6 8 μs See Figure 12 Sleep-mode propagation delay, high-impedance-to-low-level output tfs Failsafe output delay time from input power loss See Figure 13 3 100-Mbps NRZ data input, See Figure 15 2 100-Mbps unrestricted bit run length data input, See Figure 15 3 150-Mbps NRZ data input, See Figure 15 1 ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 15 2 ISO72x Peak-to-peak eye-pattern jitter UNIT See Figure 11 tpZL (1) EN at 0 V, See Figure 10 TYP MAX 17 EN at 0 V, See Figure 10 tpZH tjit(PP) ISO72x MIN μs ns tsk(PP) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits. Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 13 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 7.14 Typical Characteristics 15 9 VCC1 = 3.3 V, VCC2 = 3.3 V, o TA = 25 C, CL = 15 pF 7 VCC1 = 5 V, VCC2 = 5 V, o TA = 25 C, CL = 15 pF 13 ICC − Supply Current − (mARMS) ICC − Supply Current − (mARMS) 8 14 6 ICC2 5 4 3 ICC1 2 12 11 10 ICC2 9 8 7 ICC1 6 5 4 3 2 1 1 0 0 0 20 60 40 80 0 100 25 16 20 tPLH 15 tPHL ISO72xM 10 VCC1 = 3.3 V, VCC2 = 3.3 V, CL = 15 pF, Air Flow at 7 cf/m 5 -10 5 20 35 50 80 65 95 Propagation Delay − ns Propagation Delay − ns ISO72x tPHL tPHL ISO72x -25 tPLH 18 tPLH 14 tPLH 12 tPHL 10 8 ISO72xM 6 VCC1 = 5 V, VCC2 = 5 V, CL = 15 pF, Air Flow at 7 cf/m 4 2 0 -40 110 125 -25 -10 o 20 35 50 80 65 95 110 125 TA − Free-Air Temperature − C Figure 3. Propagation Delay vs Free-Air Temperature Figure 4. Propagation Delay vs Free-Air Temperature 1.4 2.5 5-V (VIT+) 2.4 1.3 3.3-V (VIT+) 1.25 1.2 Air Flow at 7 cf/m 1.15 5-V (VIT- ) 1.1 VIT − Input Voltage Threshold − V 1.35 VIT − Input Voltage Threshold − V 5 o TA − Free-Air Temperature − C 5-V (VIT+) 2.3 2.2 5-V (VIT-) 2.1 2 Air Flow at 7 cf/m 1.9 1.8 3.3-V (VIT+) 1.7 1.6 1.05 3.3-V (VIT- ) -25 -10 5 20 35 50 80 65 95 110 125 o Figure 5. ISO72x Input Threshold Voltage vs Free-Air Temperature Submit Documentation Feedback 3.3-V (VIT-) 1.5 TA − Free-Air Temperature − C 14 100 20 25 1 -40 75 Figure 2. RMS Supply Current vs Signaling Rate Figure 1. RMS Supply Current vs Signaling Rate 30 0 -40 50 Signaling Rate (Mbps) Signaling Rate (Mbps) 1.4 -40 -25 -10 5 20 35 50 80 65 95 110 125 o TA − Free-Air Temperature − C Figure 6. ISO72xM Input Threshold Voltage vs Free-Air Temperature Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 2.92 -80 2.9 -70 IOH − High-Level Output Current − mA VCC1 Failsafe Voltage − V Typical Characteristics (continued) Vfs+ 2.88 VCC = 5 V or 3.3 V, CL = 15 pF, Air Flow at 7 cf/m 2.86 2.84 2.82 Vfs- 2.8 2.78 -40 o TA = 25 C VCC = 5 V -60 -50 -40 VCC = 3.3 V -30 -20 -10 0 -25 -10 5 20 35 50 80 65 95 0 110 125 1 2 3 4 5 6 VOH − High-Level Output Voltage − V o TA − Free-Air Temperature − C Figure 8. High-Level Output Current vs High-Level Output Voltage Figure 7. VCC1 Failsafe Threshold Voltage vs Free-Air Temperature 70 o IOL − Low-Level Output Current − mA TA = 25 C 60 VCC = 5 V 50 40 30 VCC = 3.3 V 20 10 0 0 1 2 3 4 5 VOL − Low-Level Output Voltage − V Figure 9. Low-Level Output Current vs Low-Level Output Voltage Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 15 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com ISOLATION BARRIER 8 Parameter Measurement Information IN Input Generator NOTE A + VI 50 W - VCC1 IO OUT VCC1/2 VI 0V EN tPHL VOH tPLH + ISO722 and ISO722M VCC1/2 CL Note B VO - 90% 50% VO 50% 10% VOL tf tr 3V ISOLATION BARRIER Figure 10. Switching Characteristic Test Circuit and Voltage Waveforms IN Input Generator NOTE A VO OUT VCC2 VI VCC2/2 0V EN RL = 1 kW ±1 % CL NOTE B + tPZH VOH 50% VO VI VCC2/2 50 W 0.5 V 0V tPHZ - Figure 11. ISO722 Sleep-Mode High-Level Output Test Circuit and Voltage Waveforms 0V ISOLATION BARRIER VCC2 IN Input Generator NOTE A RL = 1 kW ±1% OUT EN CL NOTE B + VI VCC2 VI VO VCC2/2 0V tPZL VO VCC2/2 tPLZ 50% VCC2 0.5 V VOL 50 W - Figure 12. ISO722 Sleep-Mode Low-Level Output Test Circuit and Voltage Waveforms NOTE A: The input pulse is supplied by a generator having the following characteristics: PRR ≤ 50 kHz, 50% duty cycle, tr ≤ 3 ns, tf ≤ 3 ns, ZO = 50 Ω. B: CL = 15 pF ± 20% and includes instrumentation and fixture capacitance. 16 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 Parameter Measurement Information (continued) VCC1 0V IN ISOLATION BARRIER VI VCC1 VI OUT VO 0V tfs VOH 50% VO CL 15 pF ±20% EN ISO722 and ISO722M 2.7 V VOL NOTE: VI transition time is 100 ns. VCC1 IN VCC or 0V CI = 0.1 mF, GND1 ISOLATION BARRIER Figure 13. Failsafe Delay Time Test Circuit and Voltage Waveforms ±1% VCC2 OUT GND2 CL 15 pF ±20% VO VCM NOTE: Pass/fail criterion is no change in VO. Figure 14. Common-Mode Transient-Immunity Test Circuit and Voltage Waveform Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 17 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com Parameter Measurement Information (continued) Tektronix HFS9009 Tektronix 784D PATTERN GENERATOR VCC1 In p u t 0V O u tp u t VCC2/2 J itte r NOTE: Bit pattern run length is 216 – 1. Transition time is 800 ps. NRZ data input has no more than five consecutive 1s or 0s. Figure 15. Peak-to-Peak Eye-Pattern Jitter Test Circuit and Voltage Waveform 18 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 9 Detailed Description 9.1 Overview The isolator in the Functional Block Diagram is based on a capacitive isolation barrier technique. The I/O channel of the device consists of two internal data channels, a high-frequency channel (HF) with a bandwidth from 100 kbps up to 150 Mbps, and a low-frequency channel (LF) covering the range from 100 kbps down to DC. In principle, a single ended input signal entering the HF-channel is split into a differential signal via the inverter gate at the input. The following capacitor-resistor networks differentiate the signal into transients, which then are converted into differential pulses by two comparators. The comparator outputs drive a NOR-gate flip-flop whose output feeds an output multiplexer. A decision logic (DCL) at the driving output of the flip-flop measures the durations between signal transients. If the duration between two consecutive transients exceeds a certain time limit, (as in the case of a low-frequency signal), the DCL forces the output-multiplexer to switch from the highfrequency to the low-frequency channel. Because low-frequency input signals require the internal capacitors to assume prohibitively large values, these signals are pulse-width modulated (PWM) with the carrier frequency of an internal oscillator, creating a sufficiently high-frequency signal capable of passing the capacitive barrier. As the input is modulated, a low-pass filter (LPF) is needed to remove the high-frequency carrier from the actual data before passing the carrier on to the output multiplexer. 9.2 Functional Block Diagram Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 19 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 9.3 Features Description Insulation characteristics and regulatory information of ISO72x family is provided in this section. 9.3.1 Insulation Characteristics over recommended operating conditions (unless otherwise noted.) PARAMETER TEST CONDITIONS SPECIFICATIONS UNIT DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 (1) VIORM Maximum working insulation voltage VPR Input to output test voltage 560 Vpeak After Input/Output Safety Test Subgroup 2/3 VPR = VIORM × 1.2, t = 10 s, Partial discharge < 5 pC 672 Vpeak Method a, VPR = VIORM × 1.6, Type and sample test with t = 10 s, Partial discharge < 5 pC 896 Vpeak Method b1, VPR = VIORM × 1.875, 100% production test with t = 1 s, Partial discharge < 5 pC 1050 Vpeak VIOTM Transient overvoltage t = 60 s 4000 Vpeak RS Insulation resistance VIO = 500 V at TS > 109 Ω Pollution degree 2 UL 1577 VISO (1) (2) Isolation voltage VTEST = VISO, t = 60 s (qualification) 3535 / 2500 VTEST = 1.2 × VISO, t = 1 s (100% production) (2) 4242 / 3000 Vpeak/Vrms Climatic classification 40/125/21 Based on lifetime curve (see the High-Voltage Lifetime of the ISO72x Family of Digital Isolators application report, SLLA197); these devices can withstand 4242 Vpeak / 3000 Vrms for > 10,000 s at 150oC. 9.3.2 IEC 60664-1 Ratings Table PARAMETER TEST CONDITIONS Basic isolation group SPECIFICATION Material group Installation classification II Rated mains voltage ≤150 VRMS I-IV Rated mains voltage ≤300 VRMS I-III 9.3.3 Regulatory Information VDE CSA UL Certified according to DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 and DIN EN 61010-1 (VDE 0411-1) Approved according to CSA Component Acceptance Notice 5A and IEC 60950-1 Recognized under UL 1577 Component Recognition Program Basic Insulation Maximum Transient Overvoltage, 4000 VPK Maximum Working Voltage, 560 VPK Maximum Surge Voltage, 4000 VPK Evaluated to CSA 60950-1-07 and IEC 60950-1 (2nd Ed) with 2000 VRMS Isolation rating for products with working voltages ≤ 125 VRMS for reinforced insulation and ≤ 390 VRMS for basic insulation Single Protection, 2500 VRMS (1) Certificate number: 40016131 Master contract number: 220991 File number: E181974 (1) 20 Production tested ≥ 3000 VRMS for 1 second in accordance with UL 1577. Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 9.3.4 Package Insulation Characteristics PARAMETER DESCRIPTIONS / TEST CONDITIONS L(101) Minimum air gap (clearance) (1) Shortest terminal-to-terminal distance through air L(102) Minimum external tracking (creepage) (1) Shortest terminal-to-terminal distance across the package surface CTI Tracking resistance (comparative DIN EN 60112 (VDE 0303-11); IEC 60112 tracking index) DTI Distance through insulation RIO CIO (1) MIN D-8 Barrier capacitance Input-to-output MAX 4 DUB-8 D-8 4 DUB-8 UNIT mm 6.1 mm 6.8 400 Minimum internal gap (internal clearance) Isolation resistance TYP V 0.008 mm Input to output, VIO = 500 V; all pins on each side of the barrier tied together, creating a two-terminal device; TA = 25°C 1012 Ω Input to output, VIO = 500 V, 100°C ≤ TA< TA max. 1011 Ω VI = 0.4 sin (4 × 106πt) 1 pF Creepage and clearance requirements are applied according to the specific equipment isolation standards of an application. Maintain the creepage and clearance distance of a board design to ensure that the mounting pads of the isolator on the printed circuit board do not reduce this distance. Creepage and clearance on a printed circuit board become equal according to the measurement techniques shown in the Isolation Glossary in the Related Documentation section. Techniques such as inserting grooves and/or ribs on a printed circuit board are used to help increase these specifications. 9.3.5 Safety Limiting Values Safety limiting intends to prevent potential damage to the isolation barrier upon failure of input or output circuitry. A failure of the I/O can allow low resistance to ground or the supply, and without current limiting, dissipate sufficient power to overheat the die and damage the isolation barrier, potentially leading to secondary system failures. PARAMETER TEST CONDITIONS IS Safety input, output, or supply current TS Maximum case temperature MIN TYP MAX θJA = 263°C/W, VI = 5.5 V, TJ = 170°C, TA = 25°C 100 θJA = 263°C/W, VI = 3.6 V, TJ = 170°C, TA = 25°C 153 150 UNIT mA °C The safety-limiting constraint is the absolute maximum junction temperature specified in the absolute maximum ratings table. The power dissipation and junction-to-air thermal impedance of the device installed in the application hardware determines the junction temperature. The junction-to-air thermal resistance in the Thermal Information table is that of a device installed in the JESD51-3, Low Effective Thermal Conductivity Test Board for Leaded Surface Mount Packages and is conservative. 200 Safety Limiting Current − mA 175 VCC1, VCC2 = 3.6 V 150 125 100 75 VCC1, VCC2 = 5.5 V 50 25 0 0 50 100 150 200 o Case Temperature − C Figure 16. θJC Thermal Derating Curve per VDE Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 21 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com 9.4 Device Functional Modes Functional modes of ISO72x are shown in Table 1 and Table 2. Table 1. ISO721 Functional Table VCC1 VCC2 PU PU INPUT (IN) OUTPUT (OUT) H H L L Open H PD PU X H X PD X Undetermined Table 2. ISO722 Functional Table VCC1 VCC2 PU PU INPUT (IN) OUTPUT ENABLE (EN) OUTPUT (OUT) H L or open H L L or open L X H Z Open L or open H H PD PU X L or open PD PU X H Z X PD X X Undetermined 9.4.1 Device I/O Schematic Output Input Enable VCC2 VCC1 VCC1 VCC2 VCC1 VCC2 8W 750 kW OUT 500 W IN 500 W EN 13 W 1 MW Figure 17. Equivalent Input and Output Schematic Diagrams 22 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 10 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 10.1 Application Information The ISO72x devices use single-ended TTL or CMOS-logic-switching technology. The supply voltage range of the devices is from 3 V to 5.5 V for both supplies, VCC1 and VCC2. When designing with digital isolators, due to the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (μC or UART), and a data converter or a line transceiver, regardless of the interface type or standard. 10.2 Typical Application The ISO721 device can be used with Texas Instruments’ microcontroller, CAN transceiver, transformer driver, and low-dropout voltage regulator to create an Isolated CAN Interface as shown in Figure 18. VS 10 F 3.3V 2 Vcc D2 1:2.2 MBR0520L 3 1 SN6501 10F 0.1F D1 GND 4 IN OUT ISO 5V 5 TPS76350 3 1 EN GND 10F 2 MBR0520L GND 5 ISO-BARRIER 5,7 GND2 (See Note 1) 0.1F 6 8 6MHz 18pF 18pF 40 12(1) 3 37 9(1) VDDC RST VDD VDDA VBAT 25 30 CAN0Rx OSC0 STELLARIS 26 31 OSC1 LM3S5Y36 CAN0Tx 7 LDO GND GNDA WAKE 0.1F 10(1) 4 32 (See Note 1) (1) OUT ISO721 VCC2 0.1F 0.1F VCC1 0.1F 4 GND1 IN VCC1 0.1F 0.1F VCC2 2 1,3 1,3 8 2 IN ISO721 OUT 6 GND1 GND2 4 5,7 4 1 3 VCC RXD S 8 CANH SN65HVD1050 TXD GND 2 7 6 10 (opt) 10 (opt) CANL Vref 5 SM712 4.7nF/ 2kV Multiple pins and capacitors omitted for clarity purpose. Figure 18. Isolated CAN Interface Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 23 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com Typical Application (continued) 10.2.1 Design Requirements Unlike optocouplers which need external components to improve performance and provide bias (or limit current), the ISO72x devices need only two external bypass capacitors to operate. 10.2.2 Detailed Design Procedure Typical ISO721 circuit hook-up is shown in Figure 19. VCC1 VCC2 0.1mF 2 mm max. from VCC1 ISO721 or ISO 721M 1 8 2 mm max. from VCC2 0.1mF 2 IN 7 6 3 OUT 4 5 INPUT OUTPUT GND1 GND2 Figure 19. Typical ISO721 Circuit Hook-up The ISO72x isolators have the same functional pinout as those of most other vendors as shown in Figure 20, and they are often pin-for-pin drop-in replacements. The notable differences in the products are propagation delay, signaling rate, power consumption, and transient protection rating. Table 3 is used as a guide for replacing other isolators with the ISO72x family of single channel isolators. GND1 4 IN 2 VCC1 3 6 OUT 5 GND2 GND1 4 8 VCC2 7 GND2 VDD1 1 VI 2 VDD1 3 6 OUT 5 GND2 GND1 4 8 VDD2 7 GND2 6 VO 5 GND2 VI 2 * 3 GND1 4 IL710 VDD1 8 VDD2 VI 7 NC 6 VO NC 5 GND2 GND1 1 2 3 4 Isolation VCC1 1 VDD1 1 Isolation 8 VCC2 7 EN HCPL-xxxx ADuM1100 Isolation IN 2 VCC1 3 ISO721 or ISO721M Isolation VCC1 1 Isolation ISO722 or ISO722M 8 VDD2 7 VOE 6 VO 5 GND2 Figure 20. Pin Cross Reference Table 3. Cross Reference PIN 7 ISOLATOR PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 ISO721 OR ISO721M ISO722 OR ISO722M PIN 8 ISO721 (1) (2) VCC1 IN VCC1 GND1 GND2 OUT GND2 EN VCC2 ADuM1100 (1) (2) VDD1 VI VDD1 GND1 GND2 VO GND2 VDD2 GND1 GND2 VO NC (4) VDD2 GND1 GND2 VO V OE (1) (2) (3) (4) (5) 24 HCPL-xxxx VDD1 VI *Leave Open (3) IL710 VDD1 VI NC (5) VDD2 Pin 1 should be used as VCC1. Pin 3 can also be used as VCC1 or left open, as long as pin 1 is connected to VCC1. Pin 5 should be used as GND2. Pin 7 can also be used as GND2 or left open, as long as pin 5 is connected to GND2. Pin 3 of the HCPL devices must be left open. This is not a problem when substituting an ISO72x device, because the extra VCC1 on pin 3 can be left an open circuit as well. An HCPL device pin 7 must be left floating (open) or grounded when an ISO722 or ISO722M device is to be used as a drop-in replacement. If pin 7 of the ISO722 or ISO722M device is placed in a high logic state, the output of the device is disabled. Pin 3 of the IL710 must not be tied to ground on the circuit board because this shorts the ISO72x VCC1 to ground. The IL710 pin 3 can only be tied to VCC or left open to drop in an ISO72x device. Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 10.2.3 Application Curves Figure 21. ISO721M Eye Diagram at 25 Mbps, 3.3 V and 25°C Figure 22. ISO721M Eye Diagram at 150 Mbps, 3.3 V and 25°C 11 Power Supply Recommendations To ensure reliable operation at all data rates and supply voltages, a 0.1-μF bypass capacitor should be placed at input and output supply pins (VCC1 and VCC2). The capacitors should be placed as close to the supply pins as possible. If only a single primary-side power supply is available in an application, isolated power can be generated for the secondary-side with the help of a transformer driver such as Texas Instruments SN6501 data sheet. For such applications, detailed power supply design and transformer selection recommendations are available in the data sheet, SN6501 Transformer Driver for Isolated Power Supplies (SLLSEA0). 12 Layout 12.1 Layout Guidelines A minimum of four layers is required to accomplish a low EMI PCB design as shown in Figure 23. Layer stacking should be in the following order (top-to-bottom): high-speed signal layer, ground plane, power plane, and lowfrequency signal layer. • Routing the high-speed traces on the top layer avoids the use of vias (and the introduction of their inductances) and allows for clean interconnects between the isolator and the transmitter and receiver circuits of the data link. • Placing a solid ground plane next to the high-speed signal layer establishes controlled impedance for transmission line interconnects and provides an excellent low-inductance path for the return current flow. • Placing the power plane next to the ground plane creates additional high-frequency bypass capacitance of approximately 100 pF/in2. • Routing the slower speed control signals on the bottom layer allows for greater flexibility as these signal links usually have margin to tolerate discontinuities such as vias. If an additional supply voltage plane or signal layer is needed, add a second power/ground plane system to the stack to keep it symmetrical. Adding a second plane system makes the stack mechanically stable and prevents it from warping. Also the power and ground plane of each power system can be placed closer together, thus increasing the high-frequency bypass capacitance significantly. For detailed layout recommendations, see the Application Note Digital Isolator Design Guide (SLLA284). Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 25 ISO721, ISO721M, ISO722, ISO722M SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 www.ti.com Layout Guidelines (continued) 12.1.1 PCB Material For digital circuit boards operating below 150 Mbps, (or rise and fall times higher than 1 ns), and trace lengths of up to 10 inches, use standard FR-4 epoxy-glass as PCB material. FR-4 (Flame Retardant 4) meets the requirements of Underwriters Laboratories UL94-V0, and is preferred over cheaper alternatives due to its lower dielectric losses at high frequencies, less moisture absorption, greater strength and stiffness, and its selfextinguishing flammability-characteristics. 12.2 Layout Example High-speed traces 10 mils Ground plane 40 mils Keep this space free from planes, traces, pads, and vias FR-4 0r ~ 4.5 Power plane 10 mils Low-speed traces Figure 23. Recommended Layer Stack 26 Submit Documentation Feedback Copyright © 2006–2015, Texas Instruments Incorporated Product Folder Links: ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M, ISO722, ISO722M www.ti.com SLLS629L – JANUARY 2006 – REVISED OCTOBER 2015 13 Device and Documentation Support 13.1 Documentation Support 13.1.1 Related Documentation Transformer Driver for Isolated Power Supplies, SLLSEA0. Digital Isolator Design Guide, SLLA284. Isolation Glossary, SLLA353 13.2 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 4. Related Links PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY ISO721 Click here Click here Click here Click here Click here ISO721M Click here Click here Click here Click here Click here ISO722 Click here Click here Click here Click here Click here ISO722M Click here Click here Click here Click here Click here 13.3 Trademarks SDS is a trademark of Honeywell. DeviceNet is a trademark of Open Devicenet Vendors Association, Inc. All other trademarks are the property of their respective owners. 13.4 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 13.5 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 14 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: ISO721 ISO721M ISO722 ISO722M 27 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) ISO721D ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 ISO721 Samples ISO721DG4 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 ISO721 Samples ISO721DR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 ISO721 Samples ISO721MD ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS721M Samples ISO721MDG4 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS721M Samples ISO721MDR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS721M Samples ISO722D ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 ISO722 Samples ISO722DR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 ISO722 Samples ISO722MD ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS722M Samples ISO722MDR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS722M Samples ISO722MDRG4 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 IS722M Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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