Dual Ultrafast
Voltage Comparator
ADCMP566
FEATURES
250 ps propagation delay input to output
50 ps propagation delay dispersion
Differential ECL 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
FUNCTIONAL BLOCK DIAGRAM
NONINVERTING
INPUT
Q OUTPUT
ADCMP566
INVERTING
INPUT
LATCH ENABLE
INPUT
Q OUTPUT
LATCH ENABLE
INPUT
03633-0-001
Figure 1.
GENERAL DESCRIPTION
The ADCMP566 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 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-and-hold, or sample-and-hold modes of operation.
The ADCMP566 is available in a 32-lead LFCSP package.
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
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
www.analog.com
Fax: 781.326.8703
© 2003 Analog Devices, Inc. All rights reserved.
ADCMP566
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Thermal Considerations.............................................................. 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Timing Information ......................................................................... 8
Application Information.................................................................. 9
Clock Timing Recovery ............................................................... 9
Optimizing High Speed Performance ........................................9
Comparator Propagation Delay Dispersion ..............................9
Comparator Hysteresis .............................................................. 10
Minimum Input Slew Rate Requirement ................................ 10
Typical Application Circuits ..................................................... 11
Typical Performance Characteristics ........................................... 12
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
Revision 0: Initial Version
Rev. 0 | Page 2 of 16
ADCMP566
SPECIFICATIONS
Table 1. ADCMP566 ELECTRICAL CHARACTERISTICS (V
CC
= +5.0 V, V
EE
=
−5.2
V, T
A
= 25°C, unless otherwise noted.)
Parameter
DC INPUT CHARACTERISTICS (See Note)
Input Common-Mode Range
Input Differential Voltage
Input Offset Voltage
Input Offset Voltage Channel Matching
Offset Voltage Tempco
Input Bias Current
Input Bias Current Tempco
Input Offset Current
Input Capacitance
Input Resistance, Differential Mode
Input Resistance, Common Mode
Open Loop Gain
Common-Mode Rejection Ratio
Hysteresis
LATCH ENABLE CHARACTERISTICS
Latch Enable Common-Mode Range
Latch Enable Differential Input Voltage
Input High Current
Input Low Current
Latch Setup Time
Latch to Output Delay
Latch Pulsewidth
Latch Hold Time
OUTPUT CHARACTERISTICS
Output Voltage—High Level
Output Voltage—Low Level
Rise Time
Fall Time
AC PERFORMANCE
Propagation Delay
Propagation Delay
Propagation Delay Tempco
Prop Delay Skew—Rising Transition to
Falling Transition
Within Device Propagation Delay Skew—
Channel to Channel
Propagation Delay Dispersion vs.
Duty Cycle
Propagation Delay Dispersion vs.
Overdrive
Propagation Delay Dispersion vs.
Overdrive
Propagation Delay Dispersion vs.
Slew Rate
Propagation Delay Dispersion vs.
Common-Mode Voltage
Equivalent Input Rise Time Bandwidth
BW
Symbol
V
CM
V
OS
DV
OS
/d
T
I
BC
Condition
Min
−2.0
−5
−5.0
Typ
Max
+3.0
+5
+5.0
Unit
V
V
mV
mV
µV/°C
µA
nA/°C
µA
pF
kΩ
kΩ
dB
dB
mV
V
V
µA
µA
ps
ps
ps
ps
V
V
ps
ps
ps
ps
ps/°C
ps
ps
ps
ps
ps
ps
−10
−8.0
C
IN
CMRR
V
CM
= −2.0 V to +3.0 V
±1.0
±1.0
10.0
+24
10.0
±0.5
0.75
100
600
60
69
±1.0
+42
+8.0
V
LCM
V
LD
@ 0.0 V
@ −2.0 V
250 mV overdrive
250 mV overdrive
250 mV overdrive
250 mV overdrive
ECL 50 Ω to −2.0 V
ECL 50 Ω to −2.0 V
20% to 80%
20% to 80%
1 V overdrive
20 mV overdrive
−2.0
0.4
−12
−12
t
S
t
PLOH,
t
PLOL
t
PL
t
H
V
OH
V
OL
t
R
t
F
t
PD
t
PD
+6
+6
50
250
150
75
0
2.0
+12
+12
−1.06
−1.95
170
140
240
290
0.5
±10
±10
−0.81
−1.65
1 MHz, 1 ns t
R
, t
F
50 mV to 1.5 V
20 mV to 1.5 V
0 V to 1 V swing,
20% to 80%,
50 and 600 ps t
R
, t
F
1 V swing,
−1.5 V to 2.5 V
CM
0 V to 1 V swing,
20% to 80%,
50 ps t
R
, t
F
Rev. 0 | Page 3 of 16
±10
35
50
50
5
5000
ps
MHz
ADCMP566
Parameter
AC PERFORMANCE (continued)
Toggle Rate
Minimum Pulsewidth
Unit to Unit Propagation Delay Skew
POWER SUPPLY
Positive Supply Current
Negative Supply Current
Positive Supply Voltage
Negative Supply Voltage
Power Dissipation
Power Dissipation
Power Supply Sensitivity—V
CC
Power Supply Sensitivity—V
EE
Symbol
Condition
>50% output swing
∆t
pd
from 10 ns to
200 ps < ±25 ps
Min
Typ
5
200
±10
I
VCC
I
VEE
V
CC
V
EE
@ +5.0 V
@ −5.2 V
Dual
Dual
Dual, without load
Dual, with load
9
60
4.75
−4.96
375
13
70
5.0
−5.2
450
550
68
85
18
85
5.25
−5.45
525
Max
Unit
Gbps
ps
ps
mA
mA
V
V
mW
mW
dB
dB
PW
PSS
VCC
PSS
VEE
NOTE:
Under no circumstances should the input voltages exceed the supply voltages.
Rev. 0 | Page 4 of 16
ADCMP566
ABSOLUTE MAXIMUM RATINGS
Table 2. ADCMP566 Absolute Maximum Ratings
Supply
Voltages
Parameter
Positive Supply Voltage
(V
CC
to GND)
Negative Supply Voltage
(V
EE
to GND)
Ground Voltage Differential
Input Common-Mode
Voltage
Differential Input Voltage
Input Voltage,
Latch Controls
Output Current
Operating Temperature,
Ambient
Operating Temperature,
Junction
Storage Temperature Range
Rating
−0.5 V to +6.0 V
−6.0 V to +0.5 V
−0.5 V to +0.5 V
−3.0 V to +4.0 V
−7.0 V to +7.0 V
V
EE
to 0.5 V
30 mA
−40°C to +85°C
125°C
−65°C to +150°C
THERMAL CONSIDERATIONS
The ADCMP566 LFCSP 32-lead package option has a θ
JA
(junction-to-ambient thermal resistance) of 27.2°C/W in
still air.
Input
Voltages
Output
Temperature
Stress above those listed under Absolute Maximum Ratings may
cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 5 of 16
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