AD260BND-2 Analog Devices Inc, AD260BND-2 Datasheet

AD260BND-2

Manufacturer Part Number

AD260BND-2

Description

IC LOGIC ISO/3.5KV 2:3IO 22DIP

Manufacturer

Analog Devices Inc

Series

IsoLogic™r

Datasheet

1.AD260AND-0.pdf (8 pages)

Specifications of AD260BND-2

Rohs Status

RoHS non-compliant

Inputs - Side 1/side 2

2/3

Number Of Channels

Isolation Rating

3500Vrms

Voltage - Supply

4 V ~ 5.75 V

Data Rate

40MBd

Propagation Delay

14ns

Output Type

Tri-State

Package / Case

22-DIP Module

Operating Temperature

-25°C ~ 85°C

Input Voltage

5.75V

No. Of Outputs

Power Dissipation Pd

1.5W

Supply Voltage Range

4V To 5.75V

No. Of Pins

Operating Temperature Range

-25Â°C To +85Â°C

Termination Type

Through Hole

Filter Terminals

Through Hole

Rohs Compliant

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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GENERAL DESCRIPTION

The AD260 is designed using Analog Devices new IsoLogic

circuit architecture to isolate five digital control signals to/

from a microcontroller and its related field I/O components. Six

models allow all I/O combinations from five input lines to five

output lines, including combinations in between. Every AD260

effectively replaces up to five opto-isolators while also providing

the 1.5 W transformer for a 3.5 kV isolated dc-dc power supply

circuit.

Each line of the AD260 has a bandwidth of 20 MHz (min) with

a propagation delay of only 14 ns, which allows for extremely

fast data transmission. Output waveform symmetry is maintained

to within 1 ns of the input so the AD260 can be used to accu-

rately isolate time-based PWM signals.

All field or system output pins of the AD260 can be set to a high

resistance three-state level by use of the two enable pins. A field

output three-stated offers a convenient method of presetting

logic levels at power-up by use of pull-up/down resistors. Sys-

tem side outputs being three-stated allows for easy multiplexing

of multiple AD260s.

The isolation barrier of the AD260 B Grade is 100% tested at

3.5 kV rms (system to field). The barrier design also provides

excellent common-mode transient immunity from 10 kV/ s

common-mode voltage excursions of field side terminals relative

to the system side, with no false output triggering on either side.

Each output is updated within nanoseconds by input logic tran-

sitions, the AD260 also has a continuous output update feature

that automatically updates each output based on the dc level of

IsoLogic is a trademark of Analog Devices, Inc.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

IsoLogic™ Circuit Architecture

Isolation Test Voltage: To 3.5 kV rms

Five Isolated Logic Lines: Available in Six I/O Configurations

Logic Signal Bandwidth: 20 MHz (Min), 40 mbps (NRZ)

Isolated Power Transformer: 37 V p-p, 1.5 W Max

CMV Transient Immunity: 10 kV/ s Min

Waveform Edge Transmission Symmetry:

Field and System Output Enable/Three-State Functions

Performance Rated Over –25 C to +85 C

UL1950, IEC950, EN60950 Certification, Pending

APPLICATIONS

PLC/DCS Analog Input and Output Cards

Communications Bus Isolation

General Data Acquisition Applications

IGBT Motor Drive Controls

High Speed Digital I/O Ports

1 ns

the input. This guarantees the output is always valid 10 s after

a fault condition or after the power-up reset interval.

The AD260 also has an integral center tap transformer for gen-

erating isolated power. Typically driven by a 5 V push-pull drive

at the primary, it will generate a 37 V p-p output capable of

supplying up to 1.5 W. This can then be regulated to the de-

sired voltage, including 5 V dc for circuit components and

24 V for a 20 mA loop supply when needed.

PRODUCT HIGHLIGHTS

Six Isolated Logic Line I/O Configurations Available: The

AD260 is available in six pin-compatible versions of I/O con-

figurations to meet a wide variety of requirements.

Wide Bandwidth with Minimal Edge Error: The AD260 with

IsoLogic affords extremely fast isolation of logic signals due to its

20 MHz bandwidth and 14 ns propagation delay. It maintains a

waveform input-to-output edge transition error of typically less

than 1 ns (total) for positive vs. negative transition.

3.5 kV rms Test Voltage Isolation Rating: The AD260

B Grade is rated to operate at 1.25 kV rms and is 100% pro-

duction tested at 3.5 kV rms, using a standard ADI test method.

High Transient Immunity: The AD260 rejects common-

mode transients slewing at up to 10 kV/ s without false trigger-

ing or damage to the device.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

ENABLE

PWRCT

5V RTN

PWRB

+5Vdc

PWRA

FLD

High Speed, Logic Isolator

FUNCTIONAL BLOCK DIAGRAM

17V p-p OUT

CT OUT

17V p-p OUT

+5Vdc

5Vdc RTN

AD260

with Power Transformer

FIELD

World Wide Web Site: http://www.analog.com

LATCH

LINE 1

LINE 2

LINE 0

LINE 3

LINE 4

LATCH

SYSTEM

5Vdc RTN

DRIVE

+5Vdc

AD260

+5V

(Continued on page 6)

ENABLE

+5Vdc

5V RTN

DRVA

DRVCT

DRVB

SYS

Related parts for AD260BND-2

AD260BND-2 Summary of contents

Page 1

... I/O components. Six models allow all I/O combinations from five input lines to five output lines, including combinations in between. Every AD260 effectively replaces up to five opto-isolators while also providing the 1.5 W transformer for a 3.5 kV isolated dc-dc power supply circuit. ...

Page 2

AD260–SPECIFICATIONS Parameter INPUT CHARACTERISTICS Threshold Voltage Positive Transition ( Negative Transition (V ) T– Hysteresis Voltage ( Input Capacitance ( Input Bias Current ( OUTPUT CHARACTERISTICS 1 Output Voltage High Level (V ...

Page 3

... AD260AND-3 3 Inputs, 2 Outputs AD260AND-4 4 Inputs, 1 Output AD260AND-5 5 Inputs, 0 Outputs AD260BND-0 0 Inputs, 5 Outputs AD260BND-1 1 Input, 4 Outputs AD260BND-2 2 Inputs, 3 Outputs AD260BND-3 3 Inputs, 2 Outputs AD260BND-4 4 Inputs, 1 Output AD260BND-5 5 Inputs, 0 Outputs CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. ...

Page 4

... RTN 5V RTN 5V RTN FLD 8 SYS DRIVE PWRA FLD DRVA 9 +5V PWRCT FLD 10 DRVCT DRIVE PWRB DRVB 11 FLD SYSTEM –4– AD260BND-2 AD260-2 LATCH LINE 0 – OUT E LATCH F1 19 LINE 1 – OUT D E LATCH LINE 2 – OUT E LATCH F3 21 LINE 3 – IN ...

Page 5

... SYS FLD +5Vdc +5Vdc +5Vdc 7 16 SYS FLD 5Vdc RTN 8 5V RTN 5V RTN 15 SYS FLD DRIVE DRVA PWRA 9 14 FLD +5V DRVCT PWRCT 10 13 FLD DRIVE DRVB 11 PWRB 12 FLD Table I. AD260BND-2 AD260BND-3 S0 (Xmt) S0 (Xmt) S1 (Xmt) S1 (Xmt) S2 (Xmt) S2 (Rcv) S3 (Rcv) S3 (Rcv) S4 (Rcv) S4 (Rcv ...

Page 6

... Edge “fidelity,” or the difference in propagation time for rising and falling edges, is typically less than 1 ns. Power consumption, unlike opto-isolators function of operat- ing frequency. Each logic line barrier driver requires about 160 A per MHz and each receiver 40 A per MHz plus, of course total idle current (each side). The supply current diminishes slightly with increasing temperature (about – ...

Page 7

The power transformer is designed to operate between 150 kHz and 250 kHz and will easily deliver more than isolated power when driven push-pull ( the system side. Different transformer tap, rectifier and regulator schemes ...

Page 8

AD260 0.160 (4.06) 0.140 (3.56) 0.075 (1.91) 0.250 (6.35) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 22-Lead Plastic DIP (ND-22) 1.500 (38.1) MAX 0.440 SIDE VIEW (11.18) MAX 0.100 (2.54) 0.050 (1.27) 0.020 0.010 (0.508 ...

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