Ultrafast
TTL Comparators
a
AD9696/AD9698
FEATURES
4.5 ns Propagation Delay
200 ps Maxim um Propagation Delay Dispersion
Single +5 V or ؎5 V Supply Operation
Com plem entary Matched TTL Outputs
Both devices allow the use of either a single +5 V supply or
±5 V supplies. T he choice of supplies determines the common
mode input voltage range available: –2.2 V to +3.7 V for ±5 V
operation, +1.4 V to +3.7 V for single +5 V supply operation.
T he differential input stage features high precision, with offset
voltages that are less than 2 mV and offset currents less than
1 µA. A latch enable input is provided to allow operation in ei-
ther sample-and-hold or track-and-hold applications.
APPLICATIONS
High Speed Line Receivers
Peak Detectors
Window Com parators
High Speed Triggers
Ultrafast Pulse Width Discrim inators
T he AD9696 and AD9698 are both available as commercial
temperature range devices operating from ambient temperatures
of 0°C to +70°C, and as extended temperature range devices for
ambient temperatures from –55°C to +125°C. Both versions are
available qualified to MIL-ST D-883 class B.
Package options for the AD9696 include a 10-pin TO-100 metal
can, an 8-pin ceramic DIP, an 8-pin plastic DIP, and an 8-lead
small outline plastic package. The AD9698 is available in a
16-pin ceramic DIP, a 16-lead ceramic gullwing, a 16-pin plastic
DIP and a 16-lead small outline plastic package. Military quali-
fied versions of the AD9696 come in the TO-100 can and
ceramic DIP; the dual AD9698 comes in ceramic DIP.
GENERAL D ESCRIP TIO N
T he AD9696 and AD9698 are ultrafast T T L-compatible volt-
age comparators able to achieve propagation delays previously
possible only in high performance ECL devices. T he AD9696 is
a single comparator providing 4.5 ns propagation delay, 200 ps
maximum delay dispersion and 1.7 ns setup time. T he AD9698
is a dual comparator with equally high performance; both de-
vices are ideal for critical timing circuits in such applications as
AT E, communications receivers and test instruments.
FUNCTIO NAL BLO CK D IAGRAM
AD9696
AD9696/AD9698 Architecture
NONINVERTING
INPUT
Q OUTPUT
Q OUTPUT
INVERTING
INPUT
LEVEL
SHIFT
INPUT
GAIN
OUTPUT
LATCH
LATCH
ENABLE
AD9698
NONINVERTING
INPUT
NONINVERTING
INPUT
Q OUTPUT
Q OUTPUT
Q OUTPUT
Q OUTPUT
#1
#2
INVERTING
INPUT
INVERTING
INPUT
LATCH
ENABLE
LATCH
ENABLE
REV. B
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.
Tel: 617/ 329-4700
Fax: 617/ 326-8703
World Wide Web Site: http:/ / w w w .analog.com
© Analog Devices, Inc., 1997