ADCMP567_15 Datasheet, PDF (1/17 Pages) Analog Devices – Dual Ultrafast Voltage Comparator

FEATURES
250 ps propagation delay input to output
50 ps propagation delay dispersion
Differential PECL compatible outputs
Differential latch control
Robust input protection
Input common-mode range −2.0 V to +3.0 V
Input differential range ±5 V
ESD protection >3 kV HBM, >200 V MM
Power supply sensitivity >65 dB
200 ps minimum pulsewidth
5 GHz equivalent input rise time bandwidth
Typical output rise/fall of 165 ps
APPLICATIONS
High speed instrumentation
Scope and logic analyzer front ends
Window comparators
High speed line receivers and signal restoration
Threshold detection
Peak detection
High speed triggers
Patient diagnostics
Disk drive read channel detection
Hand-held test instruments
Zero-crossing detectors
Clock drivers
Automatic test equipment
Dual Ultrafast
Voltage Comparator
ADCMP567
FUNCTIONAL BLOCK DIAGRAM
NONINVERTING
INPUT
INVERTING
INPUT
ADCMP567
Q OUTPUT
Q OUTPUT
LATCH ENABLE
INPUT
LATCH ENABLE
INPUT
Figure 1.
03632-0-001
GENERAL DESCRIPTION
The ADCMP567 is an ultrafast voltage comparator fabricated
on Analog Devices’ proprietary XFCB process. The device
features 250 ps propagation delay with less than 35 ps overdrive
dispersion. Overdrive dispersion, a particularly important
characteristic of high speed comparators, is a measure of the
difference in propagation delay under differing overdrive
conditions.
A fast, high precision differential input stage permits consis-
tent 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 PECL 10 K
and 10 KH logic families. The outputs provide sufficient drive
current to directly drive transmission lines terminated in 50 Ω
to VDD − 2 V. A latch input is included, which permits tracking,
track-and-hold, or sample-and-hold modes of operation.
The ADCMP567 is available in a 32-lead LFCSP package.
Rev. 0
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