Analog Devices ADM1810-13 5-18 c Datasheet
Microprocessor Reset Circuits
V
CC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
V
CC
GND
ADM1810/ADM1815
RST
V
CC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
V
CC
GND
ADM1812/ADM1817
V
CC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
V
CC
GND
ADM1813/ADM1818
RST
RESET
MONITOR
5.5k⍀
V
CC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
V
CC
GND
ADM1811/ADM1816
RST
5.5k⍀
RST
ADM1810–ADM1813/ADM1815–ADM1818
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
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 (Typ)
Active High and Low Push-Pull Output Choices
(ADM1810, ADM1812, ADM1815, and ADM1817)
Open-Drain Output Choices (ADM1811, ADM1813,
ADM1816, and ADM1818)
Can Be Used with a Manual Push-Button to Generate
aReset (ADM1813, ADM1818)
Initialize 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 can be 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 can 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 is reset
and safe system initialization begins.
The ADM181x series of microprocessor reset circuits are available in low cost, space-saving SOT-23 and SC70 packages.
REV. C
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. 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: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.
ADM1810–ADM1813/ADM1815–ADM1818 SPECIFICATIONS
(VCC = Full Operating Range, TA = –40ⴗC to +105ⴗC, unless otherwise noted.)
Parameter Min Typ Max Unit Conditions/Note
SUPPLY
Voltage 1 5.5 V TA = 0°C to 105°C
1.2 5.5 V T
Current 9 16 µAV
410µAV
OUTPUT CURRENT
RST Output Source Current 350 µAV
RST Output Source Current 350 µAV
RST Output Sink Current 8 mA V
RST Output Sink Current 8 mA V
OUTPUT VOLTAGE V
V
TRIP POINT
CC
– 0.5 VCC – 0.1 V (ADM1810/ADM1812/ADM1815/
CC
ADM1810-5, ADM1811-5, ADM1812-5, 4.50 4.62 4.75 V
ADM1813-5
ADM1810-10, ADM1811-10, 4.25 4.35 4.49 V
ADM1812-10, ADM1813-10
ADM1815-5, ADM1816-5, ADM1817-5, 2.98 3.06 3.15 V
ADM1818-5
ADM1815-10, ADM1816-10 2.80 2.88 2.97 V
ADM1817-10, ADM1818-10
ADM1815-20, ADM1816-20 2.47 2.55 2.64 V
ADM1817-20, ADM1818-20
ADM1815-R23, ADM1816-R23 2.25 2.31 2.37 V
ADM1817-R23, ADM1818-R23
ADM1815-R22, ADM1816-R22 2.12 2.18 2.25 V
ADM1817-R22, ADM1818-R22
INTERNAL PULL-UP RESISTOR
ADM1811/ADM1816 3.5 5.5 7.5 kΩ
ADM1813/ADM1818 3.1 5.5 7.5 kΩ
OUTPUT CAPACITANCE 10 pF
RESET ACTIVE TIME 100 150 250 ms
V
DETECT TO RESET
CC
Falling 10 µs(ADM1810/ADM1811/ADM1812/
10 µs(ADM1815/ADM1816/ADM1817/
Rising 100 150 250 ms tR = 5 µs
PUSH-BUTTON DETECT TO RST 1 µs (ADM1813/ADM1818)
PUSH-BUTTON RESET 100 150 250 ms (ADM1813/ADM1818)
Specifications subject to change without notice.
= –40°C to +105°C
A
= 5.5 V, VCC > VTH, No Load
CC
= 3.6 V, VCC > VTH, No Load
CC
≥ VTH (Max), Reset Not
CC
Asserted (ADM1810/ADM1815)
≤ V
CC
(Min), Reset Asserted
TH
(ADM1812/ADM1817)
≥ 2.7 V, Reset Asserted,
CC
= 0.4 V, (ADM1810/
V
OUT
ADM1811/ADM1813/ADM1815/
ADM1816/ADM1818)
≥ 2.7 V, Reset Not Asserted,
CC
V
= 0.4 V (ADM1812/ADM1817)
OUT
ADM1817) @ 0 µA to 500 µA
ADM1813)
ADM1818)
REV. C–2–
ADM1810–ADM1813/ADM1815–ADM1818
TOP VIEW
(Not to Scale)
RST/RST
V
CC
GND
ADM181x
1
2
3
ABSOLUTE MAXIMUM RATINGS*
(TA = 25°C, unless otherwise noted.)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6.0 V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature Range . . . . . . . . . . –40°C to +105°C
Thermal Impedance, SOT-23 . . . . . . . . . . . . . . . 270°C/W
JA
Thermal Impedance, SC70 . . . . . . . . . . . . . . . . . 146°C/W
JA
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods of time may affect device reliability.
ORDERING GUIDE
Trip Package
Model* Point Option Brand
ADM1810-5AKS-REEL 4.62 V KS-3 (SC70) MZV
ADM1810-5AKS-REEL7 4.62 V KS-3 (SC70) MZV
ADM1810-5ART-REEL 4.62 V RT-3 (SOT-23) MZV
ADM1810-5ART-REEL7 4.62 V RT-3 (SOT-23) MZV
ADM1810-10AKS-REEL 4.35 V KS-3 (SC70) MZT
ADM1810-10AKS-REEL7 4.35 V KS-3 (SC70) MZT
ADM1810-10ART-REEL 4.35 V RT-3 (SOT-23) MZT
ADM1810-10ART-REEL7 4.35 V RT-3 (SOT-23) MZT
ADM1811-5AKS-REEL 4.62 V KS-3 (SC70) M1V
ADM1811-5AKS-REEL7 4.62 V KS-3 (SC70) M1V
ADM1811-5ART-REEL 4.62 V RT-3 (SOT-23) M1V
ADM1811-5ART-REEL7 4.62 V RT-3 (SOT-23) M1V
ADM1811-10AKS-REEL 4.35 V KS-3 (SC70) M1T
ADM1811-10AKS-REEL7 4.35 V KS-3 (SC70) M1T
ADM1811-10ART-REEL 4.35 V RT-3 (SOT-23) M1T
ADM1811-10ART-REEL7 4.35 V RT-3 (SOT-23) M1T
ADM1812-5AKS-REEL 4.62 V KS-3 (SC70) MTV
ADM1812-5AKS-REEL7 4.62 V KS-3 (SC70) MTV
ADM1812-5ART-REEL 4.62 V RT-3 (SOT-23) MTV
ADM1812-5ART-REEL7 4.62 V RT-3 (SOT-23) MTV
ADM1812-10AKS-REEL 4.35 V KS-3 (SC70) MTT
ADM1812-10AKS-REEL7 4.35 V KS-3 (SC70) MTT
ADM1812-10ART-REEL 4.35 V RT-3 (SOT-23) MTT
ADM1812-10ART-REEL7 4.35 V RT-3 (SOT-23) MTT
ADM1813-5AKS-REEL 4.62 V KS-3 (SC70) M3V
ADM1813-5AKS-REEL7 4.62 V KS-3 (SC70) M3V
ADM1813-5ART-REEL7 4.62 V RT-3 (SOT-23) M3V
*Only available in reels.
PIN CONFIGURATION
PIN FUNCTION DESCRIPTIONS
Pin Mnemonic Function
1 RST/RST Reset Output. RST/RST remains active
while V
is below the reset threshold
CC
and remains active for 150 ms (typ) after
rises above the reset threshold.
V
CC
2V
CC
Supply voltage being monitored.
3 GND 0 V. Ground reference for all signals.
Trip Package
Model* Point Option Brand
ADM1813-5ART-REEL7 4.62 V RT-3 (SOT-23) M3V
ADM1813-10AKS-REEL 4.35 V KS-3 (SC70) M3T
ADM1813-10AKS-REEL7 4.35 V KS-3 (SC70) M3T
ADM1813-10ART-REEL 4.35 V RT-3 (SOT-23) M3T
ADM1813-10ART-REEL7 4.35 V RT-3 (SOT-23) M3T
ADM1815-5AKS-REEL 3.06 V KS-3 (SC70) M5K
ADM1815-5AKS-REEL7 3.06 V KS-3 (SC70) M5K
ADM1815-5ART-REEL 3.06 V RT-3 (SOT-23) M5K
ADM1815-5ART-REEL7 3.06 V RT-3 (SOT-23) M5K
ADM1815-10AKS-REEL 2.88 V KS-3 (SC70) M5E
ADM1815-10AKS-REEL7 2.88 V KS-3 (SC70) M5E
ADM1815-10ART-REEL 2.88 V RT-3 (SOT-23) M5E
ADM1815-10ART-REEL7 2.88 V RT-3 (SOT-23) M5E
ADM1815-20AKS-REEL 2.55 V KS-3 (SC70) M5A
ADM1815-20AKS-REEL7 2.55 V KS-3 (SC70) M5A
ADM1815-20ART-REEL 2.55 V RT-3 (SOT-23) M5A
ADM1815-20ART-REEL7 2.55 V RT-3 (SOT-23) M5A
ADM1815-R22AKS-REEL 2.18 V KS-3 (SC70) M5B
ADM1815-R22AKS-REEL7 2.18 V KS-3 (SC70) M5B
ADM1815-R22ART-REEL 2.18 V RT-3 (SOT-23) M5B
ADM1815-R22ART-REEL7 2.18 V RT-3 (SOT-23) M5B
ADM1815-R23AKS-REEL 2.31 V KS-3 (SC70) M5C
ADM1815-R23AKS-REEL7 2.31 V KS-3 (SC70) M5C
ADM1815-R23ART-REEL 2.31 V RT-3 (SOT-23) M5C
ADM1815-R23ART-REEL7 2.31 V RT-3 (SOT-23) M5C
ADM1816-5AKS-REEL 3.06 V KS-3 (SC70) M6K
ADM1816-5AKS-REEL7 3.06 V KS-3 (SC70) M6K
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADM1810–ADM1813/ADM1815–ADM1818 features proprietary ESD protection circuitry,
permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore,
proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
REV. C
–3–
Loading...