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AD8469 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8469
Beschreibung Single-Supply TTL/CMOS Comparator
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
AD8469 Datasheet, Funktion
www.DataSheet.co.kr
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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.
Datasheet pdf - http://www.DataSheet4U.net/






AD8469 Datasheet, Funktion
www.DataSheet.co.kr
AD8469
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 2.5 V, TA = 25°C, unless otherwise noted.
400
300
200
VCC = 2.5V
VCC = 5.5V
100
0
–100
–200
–300
–400
–1 0 1 2 3 4 5 6 7
HYS PIN VOLTAGE (V)
Figure 3. HYS Pin Current vs. Voltage, VCC = 2.5 V and 5.5 V
Data Sheet
160
150
140
130
120
110
100
90
80
70
60
50 VCC = 2.5V
40
30
20 VCC = 5.5V
10
0
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
HYS RESISTOR (kΩ)
Figure 6. Hysteresis vs. HYS Resistor, VCC = 2.5 V and 5.5 V
5
VCC = 2.5V
4
3
2
1
0
–1
–2
+125°C
–3
+25°C
–4
–40°C
–5
–1.0 –0.5 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
COMMON-MODE VOLTAGE (V)
Figure 4. Input Bias Current vs. Input Common-Mode Voltage, VCC = 2.5 V
1.5
SOURCE
1.0
SINK
0.5
0
–0.5
–1.0
–1.0 –0.5 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
OUTPUT VOLTAGE (V)
Figure 7. Load Current vs. Output Voltage
4.0
60
55
50
45
VCC = 5.5V
40 RISE DELAY
35 VCC = 5.5V
FALL DELAY
30
25 VCC = 2.5V
RISE DELAY
VCC = 2.5V
FALL DELAY
20
0
50 100
OVERDRIVE (mV)
150
Figure 5. Propagation Delay vs. Input Overdrive, VCC = 2.5 V and 5.5 V
38.0
37.8
37.6 FALL DELAY
37.4
37.2
37.0
RISE DELAY
36.8
36.6
36.4
36.2 VCC = 2.5V
36.0
0.5 1.0 1.5 2.0 2.5
COMMON-MODE VOLTAGE (V)
3.0
Figure 8. Propagation Delay vs. Input Common-Mode Voltage, VCC = 2.5 V
Rev. 0 | Page 6 of 12
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6 Page









AD8469 pdf, datenblatt
www.DataSheet.co.kr
AD8469
OUTLINE DIMENSIONS
Data Sheet
3.20
3.00
2.80
3.20
3.00
2.80
PIN 1
IDENTIFIER
85
14
0.65 BSC
5.15
4.90
4.65
0.95
0.85
0.75
0.15
0.05
COPLANARITY
0.10
1.10 MAX
15° MAX
0.40
0.25
0.23
0.09
0.80
0.55
0.40
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 19. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model1, 2
AD8469WBRMZ
AD8469WBRMZ-RL
Temperature Range
−40°C to +125°C
−40°C to +125°C
1 Z = RoHS Compliant Part.
2 W = Qualified for Automotive Applications.
Package Description
8-Lead Mini Small Outline Package [MSOP]
8-Lead Mini Small Outline Package [MSOP]
Package Option
RM-8
RM-8
Branding
Y4F
Y4F
AUTOMOTIVE PRODUCTS
The AD8469W models are available with controlled manufacturing to support the quality and reliability requirements of automotive
applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers
should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in
automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to
obtain the specific Automotive Reliability reports for these models.
©2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10490-0-1/12(0)
Rev. 0 | Page 12 of 12
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