ADM2485(RevPrk) Ver la hoja de datos (PDF) - Analog Devices

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Fabricante

ADM2485
(Rev.:RevPrk)

High Speed Isolated RS-485 Transceiver with Integrated Transformer Driver

Analog Devices 

Preliminary Technical Data

ADM2485

ADM2485E CHARACTERISTICS

PACKAGE CHARACTERISTICS

Table 2.

Parameter

Resistance (Input-Output)1

Capacitance (Input-Output)1

Input Capacitance2

Input IC Junction-to-Case Thermal Resistance

Output IC Junction-to-Case Thermal Resistance

Symbol

RI-O

CI-O

CI

θJCI

θJCO

Min Typ Max Unit Test Conditions

1012

Ω

3

pF

f = 1 MHz

4

pF

33

°C/W Thermocouple located at

28

°C/W center of package underside

1 Device considered a two-terminal device: Pins 1, 2, 3, 4, 5, 6, 7, and 8 shorted together, and Pins 9, 10, 11, 12, 13, 14, 15, and 16 shorted together.

2 Input capacitance is from any input data pin to ground.

REGULATORY INFORMATION

The ADM2485 is to be approved by the following organizations:

Table 3.

Organization

UL

Approval Type

To be recognized under 1577 component recognition program.

CSA

To be approved under CSA Component Acceptance Notice #5A.

VDE

To be certified according to DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01

Notes

In accordance with UL1577, each ADM2485

is proof-tested by applying an insulation

test voltage ≥3000 V rms for 1 second (current

leakage detection limit = 5 µA).

In accordance with VDE 0884, each ADM2485

is proof-tested by applying an insulation

test voltage ≥1050 VPEAK for 1 second

(partial discharge detection limit = 5 pC).

INSULATION AND SAFETY-RELATED SPECIFICATIONS

Table 4.

Parameter

Symbol Value

Rated Dielectric Insulation Voltage

2500

Minimum External Air Gap (Clearance)

L(I01)

5.15 min

Unit

V rms

mm

Minimum External Tracking (Creepage)

L(I02)

5.5 min

mm

Minimum Internal Gap (Internal Clearance)

Tracking Resistance (Comparative Tracking Index) CTI

Isolation Group

0.017 min mm

>175

V

IIIa

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,).

Rev. PrK | Page 5 of 15

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