REV. 0

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a

AD8611/AD8612

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., 2000

Ultrafast 4 ns

Single Supply Comparators

PIN CONFIGURATIONS

FEATURES

4 ns Propagation Delay at 5 V

Single Supply Operation: 3 V to 5 V

100 MHz Input

Latch Function

APPLICATIONS

High-Speed Timing

Clock Recovery and Clock Distribution

Line Receivers

Digital Communications

Phase Detectors

High-Speed Sampling

Read Channel Detection

PCMCIA Cards

Zero Crossing Detector

High-Speed A/D Converter

Upgrade for LT1394 and LT1016 Designs

GENERAL DESCRIPTION

The AD8611/AD8612 are single and dual 4 ns comparators with

latch function and complementary output.

Fast 4 ns propagation delay makes the AD8611/AD8612 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 AD8611/AD8612 a

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

will match the duty cycle of the input.

The AD8611 has the same pinout as the LT1016 and LT1394,

with lower supply current and a wider common-mode input range,

which includes the negative supply rail.

The AD8611/AD8612 is specified over the industrial (–40

°C to

+85

°C) temperature range. The AD8611 is available in both 8-lead

MSOP and narrow SO-8 surface mount packages. The AD8612

is available in 14-lead TSSOP surface-mount package.

14-Lead TSSOP

(RU-14)

TOP VIEW

(Not to Scale)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

QA

GND

LE A

V

IN A

IN A+

QB

QB

GND

LE B

V+

IN B

IN B+

QA

AD8612

8-Lead MSOP

(RM-8)

IN

IN

V

OUT

GND

LATCH

OUT

1

45

8

AD8611

V

8-Lead Narrow Body SO

(SO-8)

V

IN

V

IN

OUT

OUT

GND

LATCH

AD8611