AD53519 Datasheet, PDF (1/13 Pages) Analog Devices – Preliminary Technical Data

PRELIMINARY TECHNICAL DATA
a
Preliminary Technical Data
FEATURES
Robust Input Protection
300 ps Propagation Delay Input to Output
75 ps Propagation Delay Variation
Differential ECL Compatible Outputs
Differential Latch Control
Power Supply Rejection Greater than 70 dB
200ps Minimum Pulse Width (Bandwidth > 2.5
GHz)
5 Gbps Toggle Rate
Typical Output Rise/Fall of 150 ps
Dual Ultrafast
Voltage Comparator
AD53519
FUNCTIONAL BLOCK DIAGRAM
NONINVERTING
INPUT
+
INVERTING
-
INPUT
Q OUTPUT
/Q OUTPUT
APPLICATIONS
Automatic Test Equipment
High Speed Instrumentation
Scope & Logic Analyzers Front End
Window Comparators
High Speed Line Receivers
Threshold Detection
Peak Detection
High Speed Triggers
Patient Diagnostics
Disk Drive Read Channel Detection
Hand-Held Test Instruments
Zero Crossing Detectors
Line Receivers & Signal Restoration
Clock Driver
Upgrade for SPT9689 Designs
Upgrade for AD96687 Designs
LATCH ENABLE /LATCH ENABLE
INPUT
INPUT
Figure 1
GENERAL DESCRIPTION
The AD53519 is an ultrafast voltage comparator fabricated on
ADI’s proprietary XFCB process. The device features 300 ps
propagation delay with better than 75 ps overdrive dispersion.
Dispersion is a particularly important characteristic of high
speed comparators. It is a measure of the difference in
propagation delay under differing overdrive conditions.
A fast, high precision differential input stage permits consistent
propagation delay with a wide variety of signals in the common
mode range from –2.0 V to +3.0 V. Outputs are
complementary digital signals fully compatible with ECL 10 K
and 10 KH logic families. The outputs provide sufficient drive
current to directly drive transmission lines terminated in 50 Ω
to –2 V. A latch input is included which permits tracking,
track-hold, or sample-hold modes of operation.
The AD53519 is available in a 20-lead PLCC package.
REV. Pr J July 22, 2002
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© Analog Devices, Inc., 2002