ADM6710 Analog Devices, ADM6710 Datasheet

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ADM6710

Manufacturer Part Number
ADM6710
Description
Low Voltage, High Accuracy, Triple/Quad Voltage Microprocessor Supervisory Circuit
Manufacturer
Analog Devices
Datasheet

Specifications of ADM6710

# Of Monitored Voltages
4
Manual Reset Capability
No
Package
SOT
Reset Threshold Summary
11 Options-- 0.62 to 5V
Reset Output-stage
Active-Low/Open-Drain
Min Reset Timeout (ms)
140
Typ Watchdog Timeout (ms)
---

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FEATURES
Accurate monitoring of up to four power supply voltages
5 factory-set threshold options: 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5 V
Adjustable input threshold voltage = 0.62 V (1.5% accuracy)
200 ms typical reset timeout
Open-drain RESET output (10 μA internal pull-up)
Reset output stage: active low, valid to IN
Low power consumption (35 μA)
Power supply glitch immunity
Specified from −40°C to +85°C
6-lead SOT-23 package
APPLICATIONS
Telecommunications
Microprocessor systems
Desktop and notebook computers
Data storage equipment
Servers/workstations
GENERAL DESCRIPTION
The ADM6710 is a low voltage, high accuracy supervisory
circuit. The device monitors up to four system supply voltages.
The ADM6710 incorporates a variety of internally pretrimmed
undervoltage threshold options for monitoring 1.8 V, 2.5 V,
3.0 V, 3.3 V and 5.0 V supply voltages. The ADM6710Q offers
three adjustable thresholds for monitoring voltages down to
0.62 V. See the Ordering Guide section for a list and description
of all available options.
If a monitored power supply voltage falls below the minimum
voltage threshold, a single active low output asserts, triggering a
system reset. The output is open drain with a weak internal
pull-up to the monitored IN
Rev. A
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.
2
supply (or to V
1
= 1 V or IN
CC
Voltage Microprocessor Supervisory Circuit
in the case of the
Low Voltage, High Accuracy, Triple/Quad
2
= 1 V
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
ADM6710Q) of typically 10 μA. Once all voltages rise above the
selected threshold level, the reset signal remains low for the
reset timeout period (200 ms typical).
The ADM6710 output remains valid as long as IN
exceeds 1 V, whereas for the ADM6710Q, the output remains
valid as long as V
Unused monitored inputs should not be allowed to float or to
be grounded, instead they should be connected to a supply
voltage greater than their specified threshold voltages.
The ADM6710 is available in a 6-lead SOT-23 package. The
device operates over the extended temperature range of −40°C
to +85°C.
V
IN
IN
IN
IN
CC
2
1
3
4
,
0.62V REF
FUNCTIONAL BLOCK DIAGRAM
CC
©2007–2010 Analog Devices, Inc. All rights reserved.
exceeds 2 V.
Figure 1.
ADM6710
TIMEOUT
200ms
UVLO
ADM6710
www.analog.com
IN
1
2
or IN
, V
CC
2
RESET

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ADM6710 Summary of contents

Page 1

... The device monitors up to four system supply voltages. The ADM6710 incorporates a variety of internally pretrimmed undervoltage threshold options for monitoring 1.8 V, 2.5 V, 3.0 V, 3.3 V and 5.0 V supply voltages. The ADM6710Q offers three adjustable thresholds for monitoring voltages down to 0.62 V. See the Ordering Guide section for a list and description of all available options ...

Page 2

... ADM6710 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 Configurations and Function Descriptions ........................... 5 REVISION HISTORY 10/10—Rev Rev. A Added Figure 17 ................................................................................ 9 6/07—Revision 0: Initial Version Typical Performance Characteristics ..............................................6 Theory of Operation .........................................................................8 Input Configuration ......................................................................8 RESET Output Configuration ...

Page 3

... RESET DELAY ( RESET TIMEOUT PERIOD ( RESET OUTPUT LOW ( RESET OUTPUT HIGH ( RESET OUTPUT HIGH SOURCE CURRENT ( Note that the ADM6710Q is powered from The RESET output is guaranteed the correct state for IN Min Typ Max Units 2.0 5.5 V 1.0 5.5 V 1.2 5 ...

Page 4

... ADM6710 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter , RESET to GND Continuous RESET Current Storage Temperature Range Operating Temperature Range Lead Temperature (10 sec) Junction Temperature Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 5

... Figure 2. ADM6710 Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 IN Input Voltage Input Voltage the power supply input for the ADM6710Q not a monitored input Input Voltage Input Voltage GND Ground. 6 RESET Active Low RESET Output ...

Page 6

... ADM6710 TYPICAL PERFORMANCE CHARACTERISTICS 3.0V 25°C, unless otherwise noted. IN2 –40 – TEMPERATURE (ºC) Figure 4. IN Input Current vs. Temperature 2 120 100 1.5 2 2.5 3 IN2 VOLTAGE (V) Figure 5. IN Input Current vs ...

Page 7

... EDGE Figure 10. RESET Pull-Up and Pull-Down Response (10 μs/div) INx C3 RESET C2 0.0µs C2 BwL –520mV 2.00V/div NEGATIVE –6.000V offset Figure 11. RESET Timeout Delay (50 ms/div) Rev Page ADM6710 DC1M C3 BwL DC1M Timebase –101ms Trigger C3 2.00V/div 50.0 ms/div Normal 680mV 2.000V offset 500kS 1 ...

Page 8

... ADDITION OF MANUAL RESET Use the circuit shown in Figure 15 to add manual reset to any of the ADM6710 adjustable inputs. When the switch is closed, the analog input shorts to ground and a RESET output commences. The switch must remain open for a minimum of 140 ms for the RESET output to deassert ...

Page 9

... MAX 0.22 0.08 0.50 SEATING 0.30 PLANE COMPLIANT TO JEDEC STANDARDS MO-178-AB Figure 16. 6-Lead Small Outline Transistor Package [SOT-23] (RJ-6) Dimensions shown in millimeters ROUND SPROCKET HOLES PIN 1 MARKER DIRECTION OF FEED Figure 17. ADM6710 Reel Orientation Supply Temperature IN IN Tolerance (%) Range 3 4 2.5 Adj. 10 −40°C to +85°C 2.5 Adj. 5 −40°C to +85°C 1 ...

Page 10

... ADM6710 NOTES Rev Page ...

Page 11

... NOTES Rev Page ADM6710 ...

Page 12

... ADM6710 NOTES ©2007–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06626-0-10/10(A) Rev Page ...

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