Fast, Rail-to-Rail, Low Power, 2.5 V to 5.5 V,
Single-Supply TTL/CMOS Comparator
AD8469
Data Sheet
FEATURES
GENERAL DESCRIPTION
Qualified for automotive applications
The AD8469 is a fast comparator fabricated on XFCB2, an
Fully specified rail-to-rail at VCC = 2.5 V to 5.5 V
Input common-mode voltage: VEE − 0.2 V to VCC + 0.2 V
Low glitch TTL-/CMOS-compatible output stage
40 ns propagation delay
Low power: 1.4 mW at 2.5 V
Shutdown pin
Analog Devices, Inc., proprietary process. This comparator is
exceptionally versatile and easy to use. Features include an input
range from VEE − 0.2 V to VCC + 0.2 V, low noise, TTL- and
CMOS-compatible output drivers, adjustable hysteresis control,
and a shutdown input. The device offers a 40 ns propagation
delay driving a 15 pF load with 10 mV overdrive on 500 µA
typical supply current.
Programmable hysteresis
Power supply rejection better than −50 dB
−40°C to +125°C operation
A flexible power supply scheme allows the device to operate
from a single +2.5 V positive supply with a −0.2 V to +2.7 V
input signal range up to a +5.5 V positive supply with a −0.2 V
to +5.7 V input signal range.
APPLICATIONS
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
High speed line receivers
The TTL-/CMOS-compatible output stage is designed to drive
up to 15 pF with full rated timing specifications and to degrade
in a graceful and linear fashion as additional capacitance is added.
The input stage of the comparator offers robust protection against
large input overdrive, and the outputs do not phase reverse when
the valid input signal range is exceeded.
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
The AD8469 is available in an 8-lead MSOP package and features
a shutdown pin and hysteresis control. It is fully specified over
an operating temperature range of −40°C to +125°C.
Current/voltage controlled oscillators
FUNCTIONAL BLOCK DIAGRAM
V
NONINVERTING
P
INPUT
Q OUTPUT
TTL/CMOS
AD8469
Q OUTPUT
V
INVERTING
N
INPUT
HYS INPUT
INPUT
S
DN
Figure 1.
Rev. 0
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2012 Analog Devices, Inc. All rights reserved.
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