AD421

–4–

REV. C

ORDERING GUIDE

Temperature

Package

Model

Range

Option

*

AD421BN

–40

°C to +85°C

N-16

AD421BR

–40

°C to +85°C

R-16

AD421BRRL

–40

°C to +85°C

R-16; Reeled SOIC

EVAL-AD421EB

Evaluation Board

*N = Plastic DIP, R = SOIC.

ABSOLUTE MAXIMUM RATINGS*

°C unless otherwise noted)

LOOP RTN to COM . . . . . . . . . . . . . . . . . . . –2 V to + 0.5 V

Operating Temperature Range

Commercial (B Version) . . . . . . . . . . . . . . – 40

°C to +85°C

Storage Temperature Range . . . . . . . . . . . . –65

°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150

°C

Plastic DIP Package, Power Dissipation . . . . . . . . . . 670 mW

θ

. . . . . . . . . . . . . . . . . . . . 116

°C/W

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 260

°C

SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW

θ

. . . . . . . . . . . . . . . . . . . . 110

°C/W

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . +215

°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . +220

°C

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those listed in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

PIN CONFIGURATION

DIP and SOIC

14

13

12

11

16

15

10

9

8

1

2

3

4

7

6

5

AD421

TOP VIEW

(NOT TO SCALE)

REF OUT1

DRIVE

COMP

BOOST

REF OUT2

REF IN

LV

C3

C2

C1

LATCH

CLOCK

DATA

LOOP RTN

COM

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.

Although these devices feature proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE