AD8598AR Analog Devices, AD8598AR Datasheet

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AD8598AR

Manufacturer Part Number
AD8598AR
Description
AD8598ARDual 7 ns Single Supply Comparator
Manufacturer
Analog Devices
Datasheet
a
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.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Single Supply Comparator
IN A–
IN A+
PIN CONFIGURATIONS
GND
LEA
N-16, RU-16 and R-16A
QA
QA
NC
V–
World Wide Web Site: http://www.analog.com
1
2
3
4
5
6
7
8
NC = NO CONNECT
(Not to Scale)
TOP VIEW
AD8598
© Analog Devices, Inc., 1998
16
15
14
13
12
11
10
9
QB
GND
LEB
NC
V+
IN B–
IN B+
QB
AD8598
Dual 7 ns

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AD8598AR Summary of contents

Page 1

... DIP, 16-lead TSSOP or narrow R-16A surface mount packages. REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...

Page 2

AD8598–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Common-Mode Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Input Capacitance LATCH ENABLE INPUT Logic “1” Voltage Threshold Logic “0” Voltage ...

Page 3

ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Common-Mode Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Input Capacitance LATCH ENABLE INPUT Logic “1” Voltage Threshold Logic “0” Voltage Threshold ...

Page 4

... Range AD8598AN – +85 C AD8598ARU – +85 C AD8598AR – +85 C 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 the AD8598 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 5

Typical Performance Characteristics 5 +125 +5V, SINGLE SUPPLY + 2.5 2.0 1.5 1.0 0.5 0 0.5 1.0 1.5 DIFFERENTIAL INPUT VOLTAGE – mV Figure 1. Output Voltage vs. ...

Page 6

AD8598 0.5 0 +125 SINK CURRENT – mA Figure 10. Output Low Voltage vs. ...

Page 7

APPLICATIONS Optimizing High Speed Performance As with any high speed comparator or amplifier, proper design and layout techniques should be used to ensure optimal perfor- mance from the AD8598. The performance limits of high speed circuitry can easily be a ...

Page 8

AD8598 The input bias current for the AD8598 with any PNP differential input stage, this bias current will go to zero on an input that is high and will double on an input that is low. ...

Page 9

SPICE Model * AD8598 SPICE Macro-Model Typical Values * 4/98, Ver. 1.0 * TAM / ADSC * * Node assignments * non-inverting input * | inverting input * | | * | | * | | * | | * ...

Page 10

AD8598 GSY1 99 52 POLY(1) (99,50) 4E-3 -2.6E-4 GSY2 52 50 POLY(1) (99,50) 3.7E-3 -.6E-3 RSY Gain Stage Av=250 fp=100MHz * (12,98) 0. 1000 10E-13 D2 ...

Page 11

SEATING 0.1574 (4.00) 0.1497 (3.80) 0.0098 (0.25) 0.0040 (0.10) REV. A OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Lead Plastic DIP (N-16) 0.840 (21.33) 0.745 ...

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