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ADM1818 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADM1818
Beschreibung Microprocessor Reset Circuits
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADM1818 Datasheet, Funktion
Data Sheet
Microprocessor Reset Circuits
ADM1810 to ADM1813/ADM1815 to ADM1818
FEATURES
Reliable low cost voltage monitor with reset output
Suitable for monitoring 2.5 V, 3 V, 3.3 V, and 5 V power
supply voltages
Reset threshold levels: 4.62 V, 4.35 V, 3.06 V, 2.88 V, 2.55 V,
2.31 V, and 2.18 V typical
Active high and low push-pull output choices: ADM1810,
ADM1812, ADM1815, and ADM1817
Open-drain with internal pull-up resistor output choices:
ADM1811, ADM1813, ADM1816, and ADM1818
Can be used with a manual push-button to generate a reset:
ADM1813, ADM1818
Initialization of microprocessor systems with added safety
Available in 3-lead SOT-23 and SC70 packages
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Automotive systems
GENERAL DESCRIPTION
The ADM181x range of voltage monitoring circuits is used in
any application where an electronic system needs to be reset
when a voltage increases above or below a predetermined value.
Because of the reset delay time incorporated into the ADM181x
series, these devices provide a safe startup for electronic systems.
Before a system initializes, the power supply must stabilize.
Using the ADM181x series ensures that there are typically 150 ms
for the power supply to stabilize before the system resets and
safe system initialization begins.
The ADM181x series of microprocessor reset circuits are
available in low cost, space-saving SOT-23 and SC70 packages.
FUNCTIONAL BLOCK DIAGRAMS
ADM1810/ADM1815
VCC
GND
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
VCC
GND
ADM1811/ADM1816
5.5k
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
ADM1812/ADM1817
VCC
GND
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
VCC
GND
ADM1813/ADM1818
VCC
TOLERANCE
BIAS
TC
REFERENCE
RESET
MONITOR
5.5k
150ms
DELAY
RST
Figure 1.
Rev. F
Document Feedback
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 ©1999–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com






ADM1818 Datasheet, Funktion
ADM1810 to ADM1813/ADM1815 to ADM1818
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
10
ICC @VCC = 5.5V
8
6
ICC @VCC = 3V
4
2
0
–40 –20 0
20 30 50 70 85 100 120
TEMPERATURE (°C)
Figure 4. Supply Current vs. Temperature
900
800
700
600
500
VOD = 20mV
400
300
VOD = 125mV
200
100
0
–40 –20 0
VOD = 200mV
20 30 50 70 85
TEMPERATURE (°C)
100 120
Figure 5. Power-Down Reset Delay vs. Temperature
380
370
360
350
340
330
320
310
300
290
–40 –20 0
20 30 50 70 85 100 120
TEMPERATURE (°C)
Figure 6. Power-Up Reset Timeout vs. Temperature
1.011
1.009
1.007
1.005
1.003
1.001
DEVIATION (RISE)
DEVIATION (FALL)
0.999
0.997
0.995
–40 –20 0
20 30 50 70 85 100 120
TEMPERATURE (°C)
Figure 7. Normalized Reset Threshold vs. Temperature
60
50
40
30
20
10
0
10 30 40 60 80 100 200 400 600 800 1000
VTH – VCC (mV)
Figure 8. Maximum Transient Duration Without Causing a Reset Pulse vs.
Reset Comparator Overdrive
Rev. F | Page 6 of 12

6 Page









ADM1818 pdf, datenblatt
ADM1810 to ADM1813/ADM1815 to ADM1818
Model1, 2
ADM1818-20AKSZ-RL
ADM1818-20AKSZ-RL7
ADM1818-20ART-REEL
ADM1818-20ART-RL7
ADM1818-20ARTZ-RL7
ADM1818-R22AKS-RL
ADM1818-R22AKS-RL7
ADM1818-R22AKSZ-RL
ADM1818-R22AKSZ-R7
ADM1818-R22ART-RL
ADM1818-R22ART-RL7
ADM1818-R23AKS-RL7
ADM1818-R23AKSZ-RL
ADM1818-R23AKSZ-R7
ADM1818-R23ART-RL
ADM1818-R23ART-RL7
1 Available only in reels.
2 Z = RoHS Compliant Part.
Temperature Range
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
Trip Point
2.55 V
2.55 V
2.55 V
2.55 V
2.55 V
2.18 V
2.18 V
2.18 V
2.18 V
2.18 V
2.18 V
2.31 V
2.31 V
2.31 V
2.31 V
2.31 V
Data Sheet
Package Option
KS-3 (SC70)
KS-3 (SC70)
RT-3 (SOT-23)
RT-3 (SOT-23)
RT-3 (SOT-23)
KS-3 (SC70)
KS-3 (SC70)
KS-3 (SC70)
KS-3 (SC70)
RT-3 (SOT-23)
RT-3 (SOT-23)
KS-3 (SC70)
KS-3 (SC70)
KS-3 (SC70)
RT-3 (SOT-23)
RT-3 (SOT-23)
Branding
M59
M59
M8A
M8A
M59
M8B
M8B
M7M
M7M
M8B
M8B
M8C
M7N
M7N
M8C
M8C
©1999–2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D00064-0-10/13(F)
Rev. F | Page 12 of 12

12 Page





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