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Analog Devices - Single-Supply LVDS Comparator

Numéro de référence AD8465
Description Single-Supply LVDS Comparator
Fabricant Analog Devices 
Logo Analog Devices 





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AD8465 fiche technique
Data Sheet
Rail-to-Rail, Very Fast, 2.5 V to 5.5 V,
Single-Supply LVDS Comparator
AD8465
FEATURES
Fully specified rail to rail at VCCI = 2.5 V to 5.5 V
Input common-mode voltage from −0.2 V to VCCI + 0.2 V
Low glitch LVDS-compatible output stage
Propagation delay: 1.6 ns
Power dissipation: 37 mW at 2.5 V
Shutdown pin
Single-pin control for programmable hysteresis and latch
Power supply rejection > 60 dB
−40°C to +125°C operation
APPLICATIONS
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
Pulse spectroscopy
High speed line receivers
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
Current-/voltage-controlled oscillators
Automatic test equipment (ATE)
Qualified for automotive applications
FUNCTIONAL BLOCK DIAGRAM
VCCI
VCCO
VP NONINVERTING
INPUT
VN INVERTING
INPUT
AD8465
LVDS
Q OUTPUT
Q OUTPUT
LE/HYS INPUT
SDN INPUT
Figure 1.
GENERAL DESCRIPTION
The AD8465 is a very fast comparator fabricated on the Analog
Devices, Inc., proprietary XFCB2 process. This comparator is
exceptionally versatile and easy to use. Features include an
input range from VEE − 0.5 V to VCCI + 0.2 V, low noise, LVDS-
compatible output drivers, and TTL/CMOS latch inputs with
adjustable hysteresis and/or shutdown inputs.
The device offers 1.6 ns propagation delay with 1 ps rms
random jitter (RJ). Overdrive and slew rate dispersion are
typically less than 50 ps.
A flexible power supply scheme allows the devices to operate
with a single 2.5 V positive supply and a −0.5 V to +2.7 V input
signal range up to a 5.5 V positive supply with a −0.5 V to +5.7 V
input signal range. Split input/output supplies, with no sequencing
restrictions, support a wide input signal range with greatly
reduced power consumption.
The LVDS-compatible output stage is designed to drive any
standard LVDS input. The comparator input stage offers robust
protection against large input overdrive, and the outputs do not
phase reverse when the valid input signal range is exceeded. High
speed latch and programmable hysteresis features are also provided
in a unique single-pin control option.
The AD8465 is available in a 12-lead LFCSP.
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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 ©2009–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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