ADM811-3TART-REEL7 Analog Devices Inc, ADM811-3TART-REEL7 Datasheet

IC SUPERVSR W/RESET 3.08V SOT143

ADM811-3TART-REEL7

Manufacturer Part Number
ADM811-3TART-REEL7
Description
IC SUPERVSR W/RESET 3.08V SOT143
Manufacturer
Analog Devices Inc
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of ADM811-3TART-REEL7

Rohs Status
RoHS non-compliant
Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
3.08V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-143, SOT-143B, TO-253AA
Other names
ADM811-3TARTREEL7

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FEATURES
Superior upgrade for MAX811/MAX812
Specified over temperature
Low power consumption: 5 μA typical
Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options
Reset assertion down to 1 V
Power-on reset: 140 ms minimum
Logic low RESET output (ADM811)
Logic high RESET output (ADM812)
Built-in manual reset
APPLICATIONS
Microprocessor systems
Controllers
Intelligent instruments
Automotive systems
Safety systems
Portable instruments
GENERAL DESCRIPTION
The ADM811/ADM812 are reliable voltage monitoring devices
suitable for use in most voltage monitoring applications. The
ADM811/ADM812 are designed to monitor six different
voltages, each allowing a 5% or 10% degradation of standard
PSU voltages before a reset occurs. These voltages have been
selected for the effective monitoring of 2.5 V, 3 V, 3.3 V, and 5 V
supply voltage levels.
Included in this circuit is a debounced manual reset input.
Reset can be activated using an electrical switch (or an input
from another digital device) or by a degradation of the supply
voltage. The manual reset function is very useful, especially if
the circuit in which the ADM811/ADM812 are operating enters
into a state that can only be detected by the user. Allowing the
user to reset a system manually can reduce the damage or
danger that could otherwise be caused by an out-of-control
or locked system.
Rev. F
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.
CC
Circuit in 4-Lead SOT-143 with DSP
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
V
MR
CC
Microprocessor Supervisory
V
REF
FUNCTIONAL BLOCK DIAGRAM
MR
Figure 2. Typical ADM811 Operating Circuit
ADM811
GND
V
CC
RESET
ADM811/ADM812
DEBOUNCE
©2009 Analog Devices, Inc. All rights reserved.
GENERATOR
ADM811/ADM812
RESET
Figure 1.
100kΩ
MICROPROCESSOR
RESET
SYSTEM
GND
V
CC
www.analog.com
RESET/RESET
GND

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ADM811-3TART-REEL7 Summary of contents

Page 1

... The manual reset function is very useful, especially if the circuit in which the ADM811/ADM812 are operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system ...

Page 2

... ADM811/ADM812 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 Typical Performance Characteristics ............................................. 6 Circuit Information .......................................................................... 7 REVISION HISTORY 8/09—Rev Rev. F Changes to Ordering Guide .......................................................... 10 5/08—Rev Rev. E Changes to Table 2 ............................................................................ 4 Changes to Outline Dimensions ...

Page 3

... An Input Falling Below RESET/RESET Output Voltage Low (ADM812R/S/T/Z) Low (ADM812L/M) High (ADM812R/S/T/Z/L/M) Low (ADM811R/S/T/Z) Low (ADM811L/M) Low (ADM811R/S/T/Z/L/M) High (ADM811R/S/T/Z) High (ADM811L/ typical = 5 V for L/M models, 3.3 V for T/S models for R model, 2.5 V for Z MAX CC Min Typ Max 1.0 5.5 1 ...

Page 4

... ADM811/ADM812 ABSOLUTE MAXIMUM RATINGS Typical values are 25°C, unless otherwise noted. A Table 2. Parameter Terminal Voltage (With Respect to Ground All Other Inputs Input Current Output Current RESET Power Dissipation (T = 70°C) A RA-4 (SOT-143) Derate by 4 mW/°C Above 70°C θ Thermal Impedance JA Operating Temperature Range ...

Page 5

... Ground Reference For All Signals RESET (ADM811) Active Low Logic Output. RESET remains low while V RESET then remains low for at least 140 ms (at least 300 ms for the ADM811-3T) after V reset threshold. RESET (ADM812) Active High Logic Output. RESET remains high while V ...

Page 6

... ADM811/ADM812 TYPICAL PERFORMANCE CHARACTERISTICS –40 – TEMPERATURE (°C) Figure 4. Supply Current vs. Temperature (ADM81xR/S/T/Z) 1000 900 800 700 600 500 400 V = 20mV OD 300 200 V = 125mV 200mV OD 100 0 –40 – TEMPERATURE (°C) Figure 5. Power-Down RESET Delay vs. Temperature (ADM81xR/S/T/Z) 299 294 ADM81xL/M 279 274 ...

Page 7

... This allows time for the power supply and microprocessor to stabilize. The ADM811 provides an active low reset output ( RESET ) while the ADM812 provides an active high output (RESET). During power-down of the ADM811, the RESET output ...

Page 8

... CC Figure 11. Ensuring a Valid RESET Output Down to V ENSURING A VALID RESET/RESET OUTPUT DOWN TO V falls below 0.8 V, the RESET /RESET of the ADM811/ When V CC ADM812 no longer sinks current. Therefore, a high impedance CMOS logic input connected to RESET /RESET can drift to undetermined logic levels. To eliminate this problem, a 100 kΩ ...

Page 9

... BSC 2. 2. 1.92 BSC 1.07 0.90 0.75 0.20 0.100 0.013 0.08 0.50 SEATING 0.30 PLANE 0.54 REF COMPLIANT TO JEDEC STANDARDS TO-253-AA Figure 12. 4-Lead Small Outline Transistor Package [SOT-143] (RA-4) Dimensions shown in millimeters Rev Page ADM811/ADM812 8° 0° 0.60 0.50 0.40 ...

Page 10

... ADM811LART-REEL7 4.63 2 ADM811LARTZ-REEL 4.63 2 ADM811LARTZ-REEL7 4.63 ADM811MART-REEL7 4.38 2 ADM811MARTZ-REEL 4.38 2 ADM811MARTZ-REEL7 4.38 ADM811TART-REEL 3.08 ADM811TART-REEL7 3.08 2 ADM811TARTZ-REEL 3.08 ADM811TARTZ-REEL7 2 3.08 ADM811-3TART-REEL7 3.08 2 ADM811-3TARTZ-RL 3.08 2 ADM811-3TARTZ-RL7 3.08 ADM811SART-REEL 2.93 ADM811SART-REEL7 2.93 2 ADM811SARTZ-REEL 2.93 2 ADM811SARTZ-REEL7 2.93 ADM811RART-REEL7 2.63 ADM811RARTZ-REEL 2 2.63 2 ADM811RARTZ-REEL7 2.63 ADM811ZART-REEL 2 ...

Page 11

... NOTES Rev Page ADM811/ADM812 ...

Page 12

... ADM811/ADM812 NOTES ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00092-0-8/09(F) Rev Page ...

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