ADM8617YAYAKSZ-RL7 Analog Devices, ADM8617YAYAKSZ-RL7 Datasheet

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ADM8617YAYAKSZ-RL7

Manufacturer Part Number
ADM8617YAYAKSZ-RL7
Description
Supervisory Circuits Watchdog Supervisor - IC.
Manufacturer
Analog Devices
Series
ADM8617r
Datasheet

Specifications of ADM8617YAYAKSZ-RL7

Rohs
yes
Number Of Voltages Monitored
1
Output Type
Open Drain, Push-Pull
Manual Reset
Not Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Package / Case
SC-70-4
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
20 uA
Supply Voltage - Min
1 V
FEATURES
Precision 1.8 V to 5 V power supply monitoring
9 RESET threshold options
4 RESET timeout options
3 watchdog timeout options
RESET output stages
Low power consumption (5 μA)
Guaranteed reset output valid to V
Power supply glitch immunity
Specified over −40°C to +85°C temperature range
4-lead SC70 package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
GENERAL DESCRIPTION
The ADM8616/ADM8617 are supervisory circuits that monitor
power supply voltage levels and code execution integrity in
microprocessor-based systems. A power-on reset signal is
generated when the supply voltage rises to a preset threshold
level. The ADM8616/ADM8617 have an on-chip watchdog
timer that can reset the microprocessor if it fails to strobe
within a preset timeout period.
Each part is available in the following nine reset threshold
options: 1.58 V, 1.67 V, 2.19 V, 2.32 V, 2.63 V, 2.93 V, 3.08 V,
4.38 V, and 4.63 V. There are four reset timeout options: 1 ms,
20 ms, 140 ms, and 1120 ms. There are also three possible
watchdog timeouts available: 6.3 ms, 102 ms, and 1.6 sec.
Rev. B
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.
1.58 V to 4.63 V
1 ms, 20 ms, 140 ms, 1120 ms
6.3 ms, 102 ms, 1.6 sec
Push-pull active-low (ADM8616)
Open-drain active-low (ADM8617)
CC
= 1 V
Low Voltage Supervisory Circuits
with Watchdog in 4-Lead SC70
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The parts differ in terms of reset output configuration. The
ADM8616 is active-low with a push-pull output, while the
ADM8617 is active-low with an open-drain output.
The ADM8616/ADM8617 are available in 4-lead SC70 packages
and typically consume only 5 μA, making them suitable for use
in low power, portable applications.
V
CC
ADM8616
V
REF
FUNCTIONAL BLOCK DIAGRAM
GND
ADM8616/ADM8617
©2007 Analog Devices, Inc. All rights reserved.
GENERATOR
WATCHDOG
DETECTOR
RESET
WDI
Figure 1.
V
www.analog.com
CC
RESET

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ADM8617YAYAKSZ-RL7 Summary of contents

Page 1

... Rev. B 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. ...

Page 2

ADM8616/ADM8617 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 ...

Page 3

SPECIFICATIONS full operating range − + Table 1. Parameter SUPPLY V Operating Voltage Range CC Supply Current RESET THRESHOLD VOLTAGE ADM861xL ADM861xM ADM861xT ADM861xS ADM861xR ADM861xZ ADM861xY ADM861xW ADM861xV RESET THRESHOLD ...

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ADM8616/ADM8617 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter V CC RESET Output Current (RESET) Operating Temperature Range Storage Temperature Range θ Thermal Impedance, SC70 JA Soldering Temperature Sn/Pb Pb-Free Stresses above those listed under ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 GND Ground. 2 RESET Active-Low RESET Output. Asserted whenever V Push-Pull Output Stage for ADM8616. Open-Drain Output Stage for ADM8617. 3 WDI Watchdog Input. Generates ...

Page 6

ADM8616/ADM8617 TYPICAL PERFORMANCE CHARACTERISTICS 10.0 9.5 9.0 8 8.0 7.5 7.0 6 3.3V 6.0 CC 5.5 5.0 4 1.5V CC 4.0 3.5 –40 – TEMPERATURE (°C) Figure 3. ...

Page 7

I (mA) SINK Figure 9. Voltage Output Low vs. I SINK 2. 2.9V CC 2.90 2.88 2.86 2.84 2. Rev Page 7 ...

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ADM8616/ADM8617 CIRCUIT DESCRIPTION The ADM8616/ADM8617 provide microprocessor supply voltage supervision by controlling the microprocessors RESET input. Code execution errors are avoided during power-up, power-down, and brownout conditions by asserting a RESET signal when the supply voltage is below a preset ...

Page 9

APPLICATION INFORMATION WATCHDOG INPUT CURRENT To minimize watchdog input current (and minimize overall power consumption), leave WDI low for the majority of the watchdog timeout period. When driven high, WDI can draw as much as 160 μA. Pulsing WDI low-high-low ...

Page 10

ADM8616/ADM8617 OUTLINE DIMENSIONS RESET THRESHOLD L: 4.63V M: 4.38V T: 3.08V S: 2.93V R: 2.63V Z: 2.32V Y: 2.19V W: 1.67V V: 1.58V ORDERING GUIDE Reset 1 Model Threshold (V) 2 ADM8616LCYAKSZ-RL7 4.63 ADM8616MCYAKSZ-RL7 2 4.38 2 ADM8616TCYAKSZ-RL7 3.08 2 ...

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NOTES Rev Page ADM8616/ADM8617 ...

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... ADM8616/ADM8617 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04795-0-1/07(B) Rev Page ...

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