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TTL/CMOS Comparator. AD8469 Datasheet

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TTL/CMOS Comparator. AD8469 Datasheet






AD8469 Comparator. Datasheet pdf. Equivalent




AD8469 Comparator. Datasheet pdf. Equivalent





Part

AD8469

Description

Single-Supply TTL/CMOS Comparator



Feature


Data Sheet Fast, Rail-to-Rail, Low Powe r, 2.5 V to 5.5 V, Single-Supply TTL/CM OS Comparator AD8469 FEATURES Qualifie d for automotive applications Fully spe cified rail-to-rail at VCC = 2.5 V to 5 .5 V Input common-mode voltage: VEE − 0.2 V to VCC + 0.2 V Low glitch TTL-/C MOS-compatible output stage 40 ns propa gation delay Low power: 1.4 mW at 2.5 V Shutdown pin Progra.
Manufacture

Analog Devices

Datasheet
Download AD8469 Datasheet


Analog Devices AD8469

AD8469; mmable hysteresis Power supply rejection better than −50 dB −40°C to +125 C operation APPLICATIONS High speed in strumentation Clock and data signal res toration Logic level shifting or transl ation High speed line receivers Thresho ld detection Peak and zero-crossing det ectors High speed trigger circuitry Pul se-width modulators Current/voltage con trolled oscillators GEN.


Analog Devices AD8469

ERAL DESCRIPTION The AD8469 is a fast co mparator fabricated on XFCB2, an Analog Devices, Inc., proprietary process. Th is comparator is exceptionally versatil e and easy to use. Features include an input range from VEE − 0.2 V to VCC + 0.2 V, low noise, TTL- and CMOS-compat ible output drivers, adjustable hystere sis control, and a shutdown input. The device offers a 40 n.


Analog Devices AD8469

s propagation delay driving a 15 pF load with 10 mV overdrive on 500 µA typica l supply current. A flexible power supp ly scheme allows the device to operate from a single +2.5 V positive supply wi th a −0.2 V to +2.7 V input signal ra nge up to a +5.5 V positive supply with a −0.2 V to +5.7 V input signal rang e. The TTL-/CMOS-compatible output stag e is designed to drive .

Part

AD8469

Description

Single-Supply TTL/CMOS Comparator



Feature


Data Sheet Fast, Rail-to-Rail, Low Powe r, 2.5 V to 5.5 V, Single-Supply TTL/CM OS Comparator AD8469 FEATURES Qualifie d for automotive applications Fully spe cified rail-to-rail at VCC = 2.5 V to 5 .5 V Input common-mode voltage: VEE − 0.2 V to VCC + 0.2 V Low glitch TTL-/C MOS-compatible output stage 40 ns propa gation delay Low power: 1.4 mW at 2.5 V Shutdown pin Progra.
Manufacture

Analog Devices

Datasheet
Download AD8469 Datasheet




 AD8469
Data Sheet
Fast, Rail-to-Rail, Low Power, 2.5 V to 5.5 V,
Single-Supply TTL/CMOS Comparator
AD8469
FEATURES
Qualified for automotive applications
Fully specified rail-to-rail at VCC = 2.5 V to 5.5 V
Input common-mode voltage: VEE − 0.2 V to VCC + 0.2 V
Low glitch TTL-/CMOS-compatible output stage
40 ns propagation delay
Low power: 1.4 mW at 2.5 V
Shutdown pin
Programmable hysteresis
Power supply rejection better than −50 dB
−40°C to +125°C operation
APPLICATIONS
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
High speed line receivers
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
Current/voltage controlled oscillators
GENERAL DESCRIPTION
The AD8469 is a fast comparator fabricated on XFCB2, an
Analog Devices, Inc., proprietary process. This comparator is
exceptionally versatile and easy to use. Features include an input
range from VEE − 0.2 V to VCC + 0.2 V, low noise, TTL- and
CMOS-compatible output drivers, adjustable hysteresis control,
and a shutdown input. The device offers a 40 ns propagation
delay driving a 15 pF load with 10 mV overdrive on 500 µA
typical supply current.
A flexible power supply scheme allows the device to operate
from a single +2.5 V positive supply with a −0.2 V to +2.7 V
input signal range up to a +5.5 V positive supply with a −0.2 V
to +5.7 V input signal range.
The TTL-/CMOS-compatible output stage is designed to drive
up to 15 pF with full rated timing specifications and to degrade
in a graceful and linear fashion as additional capacitance is added.
The input stage of the comparator offers robust protection against
large input overdrive, and the outputs do not phase reverse when
the valid input signal range is exceeded.
The AD8469 is available in an 8-lead MSOP package and features
a shutdown pin and hysteresis control. It is fully specified over
an operating temperature range of −40°C to +125°C.
FUNCTIONAL BLOCK DIAGRAM
VP NONINVERTING
INPUT
VN INVERTING
INPUT
AD8469
TTL/CMOS
Q OUTPUT
Q OUTPUT
HYS INPUT
SDN INPUT
Figure 1.
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: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.




 AD8469
AD8469
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
REVISION HISTORY
1/12—Revision 0: Initial Version
Data Sheet
Applications Information .................................................................8
Power/Ground Layout and Bypassing........................................8
TTL-/CMOS-Compatible Output Stage ....................................8
Optimizing Performance..............................................................8
Comparator Propagation Delay Dispersion ................................8
Comparator Hysteresis .................................................................9
Crossover Bias Point .....................................................................9
Minimum Input Slew Rate Requirement ................................ 10
Typical Applications Circuits........................................................ 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
Automotive Products ................................................................. 12
Rev. 0 | Page 2 of 12




 AD8469
Data Sheet
AD8469
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VCC = 2.5 V, TA = −40°C to +125°C, typical values at TA = 25°C, unless otherwise noted.
Table 1.
Parameter
DC INPUT CHARACTERISTICS
Voltage Range
Common-Mode Range
Differential Voltage
Offset Voltage
Bias Current
Offset Current
Capacitance
Differential Mode Resistance
Common-Mode Resistance
Active Gain
Common-Mode Rejection Ratio
Hysteresis
HYSTERESIS MODE AND TIMING
Hysteresis Mode Bias Voltage
Minimum Resistor Value
SHUTDOWN PIN CHARACTERISTICS1
Input Voltage High
Input Voltage Low
Input Current High
Sleep Time
Wake-Up Time
DC OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
AC PERFORMANCE2
Rise Time/Fall Time
Propagation Delay
Propagation Delay Skew
Rising-to-Falling Transition
Q to Q
Overdrive Dispersion
Common-Mode Dispersion
POWER SUPPLY
Supply Voltage Range
Positive Supply Current
Power Dissipation
Power Supply Rejection Ratio
Shutdown Current
Symbol Test Conditions/Comments
VP, VN
VCM
VOS
IP, IN
VCC = 2.5 V to 5.5 V
VCC = 2.5 V to 5.5 V
VCC = 2.5 V to 5.5 V
CP, CN
AV
CMRR
−0.5 V to VCC + 0.5 V
−0.5 V to VCC + 0.5 V
VCM = −0.2 V to +2.7 V, VCC = 2.5 V
VCM = −0.2 V to +2.7 V, VCC = 5.5 V
RHYS = ∞
Current = 1 μA
Hysteresis = 120 mV
VIH
Comparator is operating
VIL
Shutdown guaranteed
IIH
VIH = VCC
tSD
lCC < 100 µA
tH
VP = 10 mV, output valid
VCC = 2.5 V
VOH
IOH = 0.8 mA
VOL
IOL = 0.8 mA
tR/tF
10% to 90%, VCC = 2.5 V
10% to 90%, VCC = 5.5 V
tPD
VOD = 10 mV, VCC = 2.5 V
VOD = 50 mV, VCC = 5.5 V
VCC = 2.5 V
VCC = 5.5 V
VCC = 2.5 V
VCC = 5.5 V
10 mV < VOD < 125 mV
−0.2 V < VCM < VCC + 0.2 V
VCC
IVCC
PD
PSRR
ISD
VCC = 2.5 V
VCC = 5.5 V
VCC = 2.5 V
VCC = 5.5 V
VCC = 2.5 V to 5.5 V
VCC = 2.5 V to 5.5 V
Min
Typ
−0.2
−0.2
−5.0
±3
−0.4
−1.0
1
200
100
80
50
50
0.1
1.145
1.25
30
2.0
−0.2
−6
300
150
VCC − 0.4
25 to 50
45 to 75
30 to 50
35 to 60
4.5
8
3
4
12
1.5
2.5
550
800
1.4
4.5
−50
150
Max
Unit
VCC + 0.2 V
VCC + 0.2 V
VCC
V
+5.0
mV
+0.4
µA
+1.0
µA
pF
7000
4000
kΩ
dB
dB
dB
mV
1.35
V
120
kΩ
VCC
V
+0.4
V
+6
µA
ns
ns
V
0.4
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5.5
V
650
μA
1100
μA
1.7
mW
7
mW
dB
260
μA
1 The output is high impedance when the device is in shutdown mode. Note that this feature must be used with care because the enable/disable time is much longer
than with a true tristate output.
2 VIN = 100 mV square input at 1 MHz, VCM = 0 V, CL = 15 pF, VCC = 2.5 V, unless otherwise noted.
Rev. 0 | Page 3 of 12






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