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

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ADM2485

High Speed, Isolated RS-485 Transceiver with Integrated Transformer Driver

Analog Devices 

ADM2485

PACKAGE CHARACTERISTICS

Table 3.

Parameter

Resistance (Input-to-Output)1

Capacitance (Input-to-Output)1

Input Capacitance2

Input IC Junction-to-Case Thermal Resistance

Output IC Junction-to-Case Thermal Resistance

Symbol Min Typ Max Unit Test Conditions

RI-O

1012

Ω

CI-O

3

pF f = 1 MHz

CI

4

pF

θJCI

33

°C/W Thermocouple located at center of

package underside

θJCO

28

°C/W Thermocouple located at center of

package underside

1 Device considered a 2-terminal device: Pin 1 to Pin 8 are shorted together and Pin 9 to Pin 16 are shorted together.

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

REGULATORY INFORMATION

Table 4. ADM2485 Approvals

Organization Approval Type

UL

Recognized under the Component Recognition

Program of Underwriters Laboratories, Inc.

VDE

Certified according to DIN V VDE V 0884-10

(VDE V 0884-10): 2006-12

Notes

In accordance with UL 1577, 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 DIN V VDE V 0884-10, each ADM2485 is proof

tested by applying an insulation test voltage ≥1050 V peak for

1 second (partial discharge detection limit = 5 pC).

INSULATION AND SAFETY-RELATED SPECIFICATIONS

Table 5.

Parameter

Rated Dielectric Insulation Voltage

Minimum External Air Gap (External Clearance)

Minimum External Tracking (Creepage)

Minimum Internal Gap (Internal Clearance)

Tracking Resistance (Comparative Tracking Index)

Isolation Group

Symbol

L(I01)

L(I02)

CTI

Value

2500

5.15 min

5.5 min

0.017 min

>175

IIIa

Unit

V rms

mm

mm

mm

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 0303-1

Material Group (DIN VDE 0110: 1989-01, Table 1)

Rev. A | Page 6 of 20

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