ADM2484EBRWZ Просмотр технического описания (PDF) - Analog Devices

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ADM2484EBRWZ

500 kbps, ESD Protected, Half-/Full-Duplex, iC oupler, Isolated RS-485 Transceiver

Analog Devices 

ADM2484E

INSULATION AND SAFETY-RELATED SPECIFICATIONS

Table 5.

Parameter

Rated Dielectric Insulation Voltage

Minimum External Air Gap (Clearance)

Symbol

L(I01)

Value

5000

7.7

Minimum External Tracking (Creepage)

L(I02)

7.6

Minimum Internal Gap (Internal Clearance)

Tracking Resistance (Comparative Tracking Index) CTI

Isolation Group

0.017

>175

IIIa

Unit

V rms

mm min

mm min

mm min

V

Conditions

1-minute duration

Measured from input terminals to output

terminals, shortest distance through air

Measured from input terminals to output

terminals, shortest distance along body

Insulation distance through insulation

DIN IEC 112/VDE 0303 Part 1

Material Group (DIN VDE 0110, 1/89)

VDE 0884 INSULATION CHARACTERISTICS

This isolator is suitable for basic electrical isolation only within the safety limit data. Maintenance of the safety data must be ensured by

means of protective circuits.

Table 6.

Description

CLASSIFICATIONS

Installation Classification per DIN VDE 0110 for Rated

Mains Voltage

≤300 V rms

≤450 V rms

≤600 V rms

Climatic Classification

Pollution Degree

VOLTAGE

Maximum Working Insulation Voltage

Input-to-Output Test Voltage

Method b1

Method a

After Environmental Tests, Subgroup 1

After Input and/or Safety Test,

Subgroup 2/Subgroup 3

Highest Allowable Overvoltage

SAFETY-LIMITING VALUES

Case Temperature

Input Current

Output Current

Insulation Resistance at TS

Conditions

DIN VDE 0110, see Table 1

VIORM × 1.875 = VPR, 100% production tested,

tm = 1 sec, partial discharge < 5 pC

VIORM × 1.6 = VPR, tm = 60 sec, partial

discharge < 5 pC

VIORM × 1.2 = VPR, tm = 60 sec, partial

discharge < 5 pC

(Transient overvoltage, tTR = 10 sec)

Maximum value allowed in the event of a

failure, see Figure 9

VIO = 500 V

Symbol Characteristic Unit

VIORM

VPR

I to IV

I to II

I to II

40/105/21

2

846

1590

1357

1018

VTR

6000

TS

IS, INPUT

IS, OUTPUT

RS

150

265

335

>109

VPEAK

VPEAK

VPEAK

VPEAK

VPEAK

°C

mA

mA

Ω

Rev. C | Page 5 of 16

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