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Analog Devices - Single-Supply TTL/CMOS Comparator

Numéro de référence AD8468
Description Single-Supply TTL/CMOS Comparator
Fabricant Analog Devices 
Logo Analog Devices 





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AD8468 fiche technique
Data Sheet
Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V,
Single-Supply TTL/CMOS Comparator
AD8468
FEATURES
Fully specified rail to rail at VCC = 2.5 V to 5.5 V
Input common-mode voltage from −0.2 V to VCC + 0.2 V
Low glitch CMOS-/TTL-compatible output stage
40 ns propagation delay
Low power: 2 mW at 2.5 V
Shutdown pin
Power supply rejection > 60 dB
−40°C to +125°C operation
Qualified for automotive applications
APPLICATIONS
Automotive applications
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
High speed line receivers
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
Current-/voltage-controlled oscillators
GENERAL DESCRIPTION
The AD8468 is a fast comparator fabricated on XFCB2.0, an
Analog Devices, Inc., proprietary process. This comparator is
exceptionally versatile and easy to use. Features include an input
range from −0.2 V to VCC + 0.2 V, low noise, TTL-/CMOS-
compatible output drivers, and shutdown inputs. The device
offers 40 ns propagation delays driving a 15 pF load with 10 mV
overdrive on 500 µA typical supply current.
A flexible power supply scheme allows the device to operate
with a single 2.5 V positive supply with a −0.2 V to + 2.7 V
input signal range and up to a 5.5 V positive supply with a
−0.2 V to +5.7 V input signal range.
FUNCTIONAL BLOCK DIAGRAM
NONINVERTING
INPUT
INVERTING
INPUT
+
AD8468
SDN
Figure 1.
Q OUTPUT
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 protec-
tion against large input overdrive, and the outputs do not phase
reverse when the valid input signal range is exceeded.
The AD8468 is available in a tiny 6-lead SC70 package with a
single-ended output and a shutdown pin.
Rev. A
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2010–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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