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AD8611AR-REEL
8-Lead, Ultrafast 4 ns Single Supply Comparator
REV.0
Ultrafast 4 ns
Single Supply Comparators
PIN CONFIGURATIONSFEATURES
4 ns Propagation Delay at 5 V
Single Supply Operation: 3 V to 5 V
100 MHz Input
Latch Function
APPLICATIONS
High-Speed Timing
Clock Recovery and Clock Distribution
Line Receivers
Digital Communications
Phase Detectors
High-Speed Sampling
Read Channel Detection
PCMCIA Cards
Zero Crossing Detector
High-Speed A/D Converter
Upgrade for LT1394 and LT1016 Designs
GENERAL DESCRIPTIONThe AD8611/AD8612 are single and dual 4 ns comparators with
latch function and complementary output.
Fast 4 ns propagation delay makes the AD8611/AD8612 a good
choice for timing circuits and line receivers. Propagation delays
for rising and falling signals are closely matched and track over
temperature. This matched delay makes the AD8611/AD8612 a
good choice for clock recovery, since the duty cycle of the output
will match the duty cycle of the input.
The AD8611 has the same pinout as the LT1016 and LT1394,
with lower supply current and a wider common-mode input range,
which includes the negative supply rail.
The AD8611/AD8612 is specified over the industrial (–40°C to
+85°C) temperature range. The AD8611 is available in both 8-lead
MSOP and narrow SO-8 surface mount packages. The AD8612
is available in 14-lead TSSOP surface-mount package.
14-Lead TSSOP
(RU-14)
8-Lead MSOP
(RM-8)
8-Lead Narrow Body SO
(SO-8)
AD8611/AD8612–SPECIFICATIONS
ELECTRICAL SPECIFICATIONSNOTESGuaranteed by design.Per comparator.
Specifications subject to change without notice.
(@ V+ = 5.0 V, V– = VGND = 0 V, TA = 25�C unless otherwise noted)
AD8611/AD8612
CAUTIONESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
ELECTRICAL SPECIFICATIONSDYNAMIC PERFORMANCE
NOTESOutput high voltage without pull-up resistor. It may be useful to have a pull-up resistor to V+ for 3 V operation.Per comparator.Guaranteed by design.
Specifications subject to change without notice.
(@ V+ = 3.0 V, V– = VGND = 0 V, TA = 25�C unless otherwise noted)
ORDERING GUIDEAD8611AR
ABSOLUTE MAXIMUM RATINGSTotal Analog Supply Voltage . . . . . . . . . . . . . . . . . . . . . 7.0 V
Digital Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V
Input Voltage1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4 V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ±5 V
Output Short-Circuit Duration to GND . . . . . . . . . Indefinite
Storage Temperature Range
R, RU, RM Packages . . . . . . . . . . . . . . . –65°C to +150°C
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Junction Temperature Range
R, RU, RM Packages . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering, 10 sec) . . . . . . . 300°C
NOTESThe analog input voltage is equal to ±4 V or the analog supply voltage, whichever
is less.θJA is specified for the worst-case conditions, i.e., θJA is specified for device in socket
for P-DIP and θJA is specified for device soldered in circuit board for SOIC and
TSSOP packages.
AD8611/AD8612Figure 1.Propagation Delay Over Temperature
OVERDRIVE – mV0255
PROPAGATION DELAY
ns1520�PD�
�PD+
Figure 2.Propagation Delay vs. Overdrive
Figure 3.Propagation Delay vs. Load Capacitance
SOURCE RESISTANCE – k�02.50.5
PROPAGATION DELAY
ns
1.01.52.0�PD�
�PD+
Figure 4.Propagation Delay vs. Source Resistance
SUPPLY VOLTAGE – V263
PROPAGATION DELAY
ns�PD�
Figure 5.Propagation Delay vs. Supply Voltage
Figure 6.Propagation Delay vs. Common-Mode Voltage
Figure 7.Offset Voltage vs. Temperature
Figure 8.Supply Current vs. Input Frequency
Figure 9.Latch Setup and Hold Time Over Temperature
SINK CURRENT – mA
LOAD CURRENT
0.2512246810Figure 10.Output Low Voltage vs. Load Current
(Sinking) Over Temperature
Figure 11.Output High Voltage vs. Load Current
(Sourcing) Over Temperature
Figure 12.Supply Current vs. Temperature
AD8611/AD8612
TEMPERATURE – �C�0.5
�4.5�50
1000
GND
mA�3.0
�3.5
�4.0
�1.5
�2.0
�1.0
�2.5
Figure 13.IGND vs. Temperature
Figure 14.ISY– vs. Temperature
Figure 15.Rising Edge Response
Figure 16.Falling Edge Response
Figure 17.Response to a 50 MHz 100 mV Input Sine Wave
