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Analog Devices Semiconductor Electronic Components Datasheet

AD8561 Datasheet

Ultrafast 7 ns Single Supply Comparator

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a
FEATURES
7 ns Propagation Delay at 5 V
Single Supply Operation: 3 V to 10 V
Low Power
Latch Function
TSSOP Packages
APPLICATIONS
High Speed Timing
Clock Recovery and Clock Distribution
Line Receivers
Digital Communications
Phase Detectors
High Speed Sampling
Read Channel Detection
PCMCIA Cards
Upgrade for LT1016 Designs
GENERAL DESCRIPTION
The AD8561 is a single 7 ns comparator with separate input and
output sections. Separate supplies enable the input stage to be
operated from ± 5 V dual supplies and +5 V single supplies.
Fast 7 ns propagation delay makes the AD8561 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 AD8561 a good
choice for clock recovery, since the duty cycle of the output will
match the duty cycle of the input.
The AD8561 has the same pinout as the LT1016, with lower
supply current and a wider common-mode input range, which
includes the negative supply rail.
The AD8561 is specified over the industrial (–40°C to +85°C)
temperature range. The AD8561 is available in the 8-lead
plastic DIP, 8-lead TSSOP, and 8-lead narrow SOIC surface-
mount packages.
Ultrafast 7 ns
Single Supply Comparator
AD8561
PIN CONFIGURATIONS
8-Lead Narrow Body
SOIC (R-8)
8-Lead Plastic DIP
(N-8)
V؉
؉IN
؊IN
V؊
OUT
OUT
GND
LATCH
AD8561
V؉ 1
؉IN 2
؊IN 3
V؊ 4
AD8561
8 OUT
7 OUT
6 GND
5 LATCH
8-Lead TSSOP
(RU-8)
V؉ 1
8
؉IN
؊IN
AD8561
V؊ 4
5
OUT
OUT
GND
LATCH
Rev. D
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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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1998–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Analog Devices Semiconductor Electronic Components Datasheet

AD8561 Datasheet

Ultrafast 7 ns Single Supply Comparator

No Preview Available !

AD8561–SPECIFICATIONS
ELECTRICAL SPECIFICATIONS (@ V+ = +5.0 V, V– = VGND = 0 V, TA = +25؇C unless otherwise noted)
Parameter
Symbol Conditions
Min Typ
INPUT CHARACTERISTICS
Offset Voltage
VOS
Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Input Capacitance
ΔVOS/ΔT
IB
IB
IOS
VCM
CMRR
AVO
CIN
–40°C TA +85°C
VCM = 0 V
–40°C TA +85°C
VCM = 0 V
0 V VCM +3.0 V
RL = 10 kΩ
2.3
4
–6 –3
–7 –3.5
0.0
65 85
3000
3.0
LATCH ENABLE INPUT
Logic “1” Voltage Threshold
Logic “0” Voltage Threshold
Logic “1” Current
Logic “0” Current
Latch Enable
Pulsewidth
Setup Time
Hold Time
VIH
VIL
IIH
IIL
tPW(E)
tS
tH
VLH = 3.0 V
VLL = 0.3 V
2.0 1.65
1.60
–1.0 –0.3
–4 –2
6
1
1.2
DIGITAL OUTPUTS
Logic “1” Voltage
Logic “1” Voltage
Logic “0” Voltage
VOH IOH = –50 μA, ΔVIN > 250 mV
VOH IOH = –3.2 mA, ΔVIN > 250 mV
VOL IOL = 3.2 mA, ΔVIN > 250 mV
3.5
2.4 3.5
0.25
DYNAMIC PERFORMANCE
Propagation Delay
Propagation Delay
Differential Propagation Delay
(Rising Propagation Delay vs.
Falling Propagation Delay)
Rise Time
Fall Time
tP
tP
ΔtP
200 mV Step with 100 mV Overdrive
–40°C TA +85°C
100 mV Step with 5 mV Overdrive
100 mV Step with 100 mV Overdrive1
20% to 80%
80% to 20%
6.75
8
8
0.5
3.8
1.5
POWER SUPPLY
Power Supply Rejection Ratio
Positive Supply Current
Ground Supply Current
Analog Supply Current
PSRR
I+
IGND
I–
+4.5 V V+ +5.5 V
–40°C TA +85°C
VO = 0 V, RL =
–40°C TA +85°C
–40°C TA +85°C
50 65
4.5
2.2
2.3
NOTES
1 Guaranteed by design.
Specifications subject to change without notice.
Max
7
8
±4
+3.0
0.8
0.4
9.8
13
2.0
6.0
7.5
3.3
3.8
4.5
5.5
Units
mV
mV
μV/°C
μA
μA
μA
V
dB
V/V
pF
V
V
μA
μA
ns
ns
ns
V
V
V
ns
ns
ns
ns
ns
ns
dB
mA
mA
mA
mA
mA
mA
–2– Rev. D


Part Number AD8561
Description Ultrafast 7 ns Single Supply Comparator
Maker Analog Devices
Total Page 12 Pages
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