The ISO7220 and ISO7221 are dual-channel digital isolators

ISO7221C-Q1

Manufacturer Part NumberISO7221C-Q1
DescriptionThe ISO7220 and ISO7221 are dual-channel digital isolators
ManufacturerTexas Instruments
ISO7221C-Q1 datasheet
 


Specifications of ISO7221C-Q1

Operating Temperature Range(c)-40 to 125Pin/package8SOIC
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FEATURES
1
Qualified for Automotive Applications
1-Mbps and 25-Mbps Signaling Rate Options
– Low Channel-to-Channel Output Skew:
1 ns (Max)
– Low Pulse-Width Distortion (PWD):
1 ns (Max)
– Low Jitter Content: 1 ns (Typ) at 150 Mbps
25-Year (Typ) Life at Rated Voltage
(See Application Report
SLLA197
Figure
14)
DESCRIPTION
The ISO7220 and ISO7221 are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented
in the same direction in the ISO7220 and in opposite directions in the ISO7221. These devices have a logic input
and output buffer separated by TI’s silicon-dioxide (SiO
4000 V. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and
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. If this dc-refresh pulse is not received every 4 ms, 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 small capacitance and resulting time constant provide fast operation with signaling rates available from 0
(1)
Mbps (dc) to 25 Mbps.
The A-option and C-option devices have TTL input thresholds and a noise filter at the
input that prevents transient pulses from being passed to the output of the device.
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.
These devices are characterized for operation over the ambient temperature range of –40°C to 125°C.
(1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
DUAL DIGITAL ISOLATORS
ISO7221C-Q1
4000-V
peak
– UL 1577, IEC 60747-5-2 (VDE 0884, Rev 2),
IEC 61010-1, IEC 60950-1 and CSA
Approved
– 50 kV/ms Typical Transient Immunity
Operates with 3.3-V or 5-V Supplies
4 kV ESD Protection
High Electromagnetic Immunity
and
–40°C to 125°C Operating Free-Air
Temperature Range
) isolation barrier, providing galvanic isolation of up to
2
ISO7220A-Q1
ISO7221A-Q1
ISO7221C-Q1
SLLS965B – JULY 2009 – REVISED MARCH 2010
Isolation, 560 V
V
peak
IORM
Copyright © 2009–2010, Texas Instruments Incorporated

ISO7221C-Q1 Summary of contents

  • Page 1

    ... High Electromagnetic Immunity and • –40°C to 125°C Operating Free-Air Temperature Range ) isolation barrier, providing galvanic isolation ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 Isolation, 560 V V peak IORM Copyright © 2009–2010, Texas Instruments Incorporated ...

  • Page 2

    ... GND1 4 GND2 5 Galvanic Isolation Barrier Pulse Width Vref Demodulation Carrier Detect Data MUX AC Detect Vref Output Buffer CSA Copyright © 2009–2010, Texas Instruments Incorporated ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com TOP-SIDE MARKING 7220AQ 7221AQ 7221CQ 8 V CC2 7 INA OUTB 6 GND2 5 Filter ...

  • Page 3

    ... CC2 Copyright © 2009–2010, Texas Instruments Incorporated Product Folder Link(s): (1) V CC1 ISO722xA ISO722xC ISO722xA ISO722xC ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 –0 –0 ±15 mA ±4 kV All pins ± ...

  • Page 4

    ... V, See Figure TEST CONDITIONS ISO722xA See Figure 1 (1) | ISO722xC See Figure 1 (1) | ISO722xA ISO722xC ISO722xA (3) ISO722xC See Figure 1 See Figure 1 See Figure 2 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com MIN TYP MAX UNIT ...

  • Page 5

    ... ISO722xA See Figure 1 (1) | ISO722xC See Figure 1 (1) | ISO722xA ISO722xC ISO722xA (3) ISO722xC See Figure 1 See Figure 1 See Figure 2 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 MIN TYP MAX UNIT ...

  • Page 6

    ... V, See Figure TEST CONDITIONS ISO722xA See Figure 1 (1) | ISO722xC See Figure 1 (1) | ISO722xA ISO722xC ISO722xA (3) ISO722xC See Figure 1 See Figure 1 See Figure 2 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com MIN TYP MAX UNIT 0.6 1 4 ...

  • Page 7

    ... ISO722xA See Figure 1 (1) | ISO722xC See Figure 1 (1) | ISO722xA ISO722xC ISO722xA (3) ISO722xC See Figure 1 See Figure 1 See Figure 2 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 MIN TYP MAX UNIT 0.6 1 4.3 9 ...

  • Page 8

    ... NOTE 0.1 F± 0.1 F± OUT IN NOTE A GND1 GND2 V CM Tektronix OUT 784D Jitter – 1. Transition time is 800 ps. ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com 1 PLH PHL V 90% OH 50% 50% 10 ≤ 3 ...

  • Page 9

    ... Rated mains voltage ≤400 VRMS (1) TEST CONDITIONS Method b1 × 1.875, PR IORM 100% Production test with Partial discharge < 500 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 MIN TYP MAX 4.8 SOIC-8 4.3 ≥175 0.008 12 >10 < ...

  • Page 10

    ... TEST CONDITIONS q = 212°C/ 5 170° 212°C/ 3 170° ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com Output CC2 8 W OUT 13 W MIN MAX = 25°C 124 A = 25°C 190 A 150 Copyright © 2009–2010, Texas Instruments Incorporated ...

  • Page 11

    ... T - Case Temperature - °C C THERMAL DERATING CURVE per IEC 60747-5-2 JC Table 1. ISO7220x or ISO7221x OUTPUT SIDE V INPUT Open PU X ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 MIN TYP MAX 212 122 37 69.1 200 (1) OUTPUT OUT ...

  • Page 12

    ... Load 5-V V th+ V 2.9 CC 2.88 2. Load 2.84 2.82 2.8 2. 110 125 -40 -25 -10 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com 5-V RMS SUPPLY CURRENT vs SIGNALING RATE (Mbps) ISO7220x I CC2 ISO7221x I CC1&2 ISO7220x I CC1 100 Signaling Rate - Mbps Figure 7. V FAILSAFE THRESHOLD CC vs FREE-AIR TEMPERATURE = 3 ...

  • Page 13

    ... LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE Load 15 pF Load T = 25° 25° ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 3 OUT Figure 11 ...

  • Page 14

    ... OUTB INB ISO 7221 V at 560 V IORM 250 500 WORKING VOLTAGE ( IORM Copyright © 2009–2010, Texas Instruments Incorporated ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com 0 OUTPUT OUTPUT GND 0 INPUT OUTPUT GND 2 750 1000 880 ...

  • Page 15

    ... These sparks often cause carbonization on insulation material and lead to a carbon track between points of different potential. This process is known as tracking. Copyright © 2009–2010, Texas Instruments Incorporated Product Folder Link(s): ISOLATION GLOSSARY ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 SLLS965B – JULY 2009 – REVISED MARCH 2010 ...

  • Page 16

    ... III: Distribution Level — Fixed installation IV: Primary Supply Level — Overhead lines, cable systems Each category should be subject to smaller transients than the category above. 16 Submit Documentation Feedback Product Folder Link(s): Copyright © 2009–2010, Texas Instruments Incorporated ISO7220A-Q1 ISO7221A-Q1 ISO7221C-Q1 www.ti.com ...

  • Page 17

    ... TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold Customer on an annual basis. OTHER QUALIFIED VERSIONS OF ISO7220A-Q1, ISO7221A-Q1, ISO7221C-Q1 : Catalog: ISO7220A, ISO7221A, ISO7221C • ...

  • Page 18

    NOTE: Qualified Version Definitions: • Catalog - TI's standard catalog product PACKAGE OPTION ADDENDUM Addendum-Page 2 21-Apr-2011 ...

  • Page 19

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing ISO7220AQDRQ1 SOIC ISO7221AQDRQ1 SOIC ISO7221CQDRQ1 SOIC PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel Diameter Width (mm) W1 (mm 2500 330.0 12 2500 330.0 12 2500 330.0 12.4 Pack Materials-Page 1 ...

  • Page 20

    ... Device Package Type ISO7220AQDRQ1 SOIC ISO7221AQDRQ1 SOIC ISO7221CQDRQ1 SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 D 8 2500 D 8 2500 Pack Materials-Page 2 13-Oct-2010 Width (mm) Height (mm) 346.0 346.0 29.0 346.0 346.0 29.0 346.0 346.0 29.0 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...