REV. A

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a

AD8598

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

Tel: 781/329-4700

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

Fax: 781/326-8703

© Analog Devices, Inc., 1998

Dual 7 ns

Single Supply Comparator

PIN CONFIGURATIONS

FEATURES

7 ns Propagation Delay

Single Supply Operation: +3 V to +10 V

Low Power

Symmetrical Layout

Latch Function

TSSOP Packages

APPLICATIONS

Clock Recovery and Clock Distribution

High Speed Data

Line Receivers

Phase Detectors

Digital Communications

I and Q Detection

High Speed Sampling

Upgrade for MAX912

Satellite Receivers

PCMCIA Cards

Wireless Data Links

Battery Operated Instrumentation

GENERAL DESCRIPTION

The AD8598 is a dual 7 ns comparator with digital latches.

Separate supplies enable the input stage to be operated from

+5 V to as high as

±5 V.

Ultrafast 7 ns propagation delay makes the AD8598 a good

choice for timing circuits and line receivers. Propagation delays

for rising and falling signals are closely matched and track over

temperature. This matched delay makes the AD8598 a good

choice for clock recovery, since the duty cycle of the output will

match the duty cycle of the input.

The AD8598 has the same pinout as the DIP version of the

AD9698. For a single comparator like the AD8598, please refer

to the AD8561 data sheet.

The AD8598 is specified over the industrial (–40

°C to +85°C)

temperature range. The AD8598 is available in both the 16-lead

plastic DIP, 16-lead TSSOP or narrow R-16A surface mount

packages.

N-16, RU-16 and R-16A

TOP VIEW

(Not to Scale)

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

NC = NO CONNECT

QA

QA

GND

LEA

NC

V–

IN A–

IN A+

QB

QB

GND

LEB

NC

V+

IN B–

IN B+

AD8598