ADM8616TAKS-RL7 [ADI]
Low-Voltage Manual Reset & Watchdog Supervisory Circuits in 4-Lead SC70; 在4引脚SC70封装低电压手动复位和看门狗监控电路
| 型号： | ADM8616TAKS-RL7 |
| 厂家： | 
ADI |
| 描述： | Low-Voltage Manual Reset & Watchdog Supervisory Circuits in 4-Lead SC70 |
| 文件： | 总7页 (文件大小：109K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low-Voltage Manual Reset & Watchdog
Supervisory Circuits in 4-Lead SC70
Preliminary Technical Data
ADM8611/ADM8616/ADM8617/ADM8618
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Precision 1.8V to 5V Power Supply Monitoring
9 Reset Threshold Options:
1.58V to 4.63V
V
CC
140ms (Min) Reset Timeout
Manual Reset Input (ADM8611)
Watchdog Timer (ADM8616–ADM8618)
Reset Output Stages
ADM8616
V
CC
RESET
RESET
GENERATOR
V
REF
Push-Pull Active-Low
Open-Drain Active-Low
Push-Pull Active-High
WATCHDOG
DETECTOR
Low Power Consumption (3µA)
Guaranteed Reset Output valid to VCC=1V
Power Supply Glitch Immunity
Specified Over -40°C to +85°C Temperature Range
4-Lead SC70 Package
GND
WDI
APPLICATIONS
Microprocessor Systems
Computers
Figure 1.
Controllers
Intelligent Instruments
Portable Equipment
GENERAL DESCRIPTION
Each part is available in a choice of the following 9 reset
threshold options: 1.58V, 1.67V, 2.19V, 2.32V, 2.63V, 2.93V,
3.08V, 4.38V and 4.63V. The reset timeout periods are 20ms
(min) and 140ms (min) for the ADM8611 and ADM8616–
ADM8618, respectively. The watchdog timeout period is 1.6s
(typ). The parts differ in terms of reset output configuration, as
indicated in table 1.
The ADM8611/ADM8616/ADM8617/ADM8618 are
supervisory circuits which 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 ADM8611’s debounced
manual reset input can be used to initiate a reset by means of an
external push-button or logic signal. The ADM8616–ADM8618
have an on-chip watchdog timer which can reset the
microprocessor if it fails to strobe within a preset timeout
period.
The ADM8611/ADM8616/ADM8617/ADM8618 are available
in 4-lead SC70 packages and typically consume only 3µA,
making them suitable for use in low power portable
applications.
Table 1. Selection Table
Output Stage
Part No.
Manual Reset
Watchdog
RESET
RESET
ADM8611
ADM8616
ADM8617
ADM8618
Yes
-
Push-Pull
Push-Pull
Open-Drain
-
-
-
Yes
Yes
Yes
Push-Pull
Rev. PrB
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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
www.analog.com
© 2004 Analog Devices, Inc. All rights reserved.
ADM8611/ADM8616/ADM8617/ADM8618
Preliminary Technical Data
ADM8611/ADM8616/ADM8617/ADM8618—SPECIFICATIONS
Table 2. VCC=Full Operating Range, TA=TMIN to TMAX, unless otherwise noted
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
SUPPLY
VCC Operating Voltage Range
Supply Current
1
5.5
20
12
V
µA
µA
10
5
VCC=5.5V
VCC=3.6V
RESET THRESHOLD VOLTAGE
ADM861_L
4.50
4.25
3.00
2.85
2.55
2.25
2.12
1.62
1.52
4.63
4.38
3.08
2.93
2.63
2.32
2.19
1.67
4.75
4.50
3.15
3.00
2.70
2.38
2.25
1.71
1.62
V
V
V
V
V
V
V
V
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
TA=-40°C to +85°C
ADM861_M
ADM861_T
ADM861_S
ADM861_R
ADM861_Z
ADM861_Y
ADM861_W
ADM861_V
1.58
40
V
ppm/°C
mV
RESET THRESHOLD TEMPERATURE COEFFICIENT
RESET THRESHOLD HYSTERESIS
RESET TIMEOUT PERIOD
3
20
30
40
ms
ADM8611
140
200
40
280
ms
ADM8616–ADM8618
VCC falling at 1mV/µs
VCC TO RESET DELAY
µs
PUSH-PULL OUTPUT (ADM8611, ADM8616, ADM8618)
RESET
0.3
0.3
0.3
0.4
V
V
V
V
V
VCC>=1.0V, ISINK=50µA
VCC>=1.2V, ISINK=100µA
VCC>=2.7V, ISINK=1.2mA
VCC>=4.5V, ISINK=3.2mA
VCC>=2.7V, ISOURCE=500µA
VCC>=4.5V, I SOURCE=800µA
Output Voltage
0.8x VCC
VCC-1.5
V
RESET
5
25
ns
From 10% to 90% VCC, CL=5pF,
VCC =3.3V
Rise Time
RESET Output Voltage
0.3
0.4
V
V
V
V
VCC>=2.7V, ISINK=1.2mA
VCC>=4.5V, ISINK=3.2mA
VCC>=1.8V, ISOURCE=150µA
VCC>=2.7V, ISOURCE=500µA
VCC>=4.5V, I SOURCE=800µA
0.8x VCC
0.8x VCC
VCC-1.5
OPEN-DRAIN OUTPUT (ADM8617)
RESET
0.3
0.3
0.3
0.4
1
V
V
V
V
µA
VCC>=1.0V, ISINK=50µA
Output Voltage
VCC>=1.2V, ISINK=100µA
VCC>=2.7V, ISINK=1.2mA
VCC>=4.5V, ISINK=3.2mA
Open-Drain Reset Output Leakage Current
Rev. PrB | Page 2 of 7
Preliminary Technical Data
ADM8611/ADM8616/ADM8617/ADM8618
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
MANUAL RESET INPUT (ADM8611)
MR
0.3xVCC
V
V
µs
ns
Input Threshold
0.7xVCC
1
MR
MR
MR
MR
Input Pulse Width
Glitch Rejection
Pull-up Resistance
to Reset Delay
100
50
25
75
k⍀
ns
200
WATCHDOG INPUT (ADM8616, ADM8617, ADM8618)
Watchdog Timeout Period
4.3
71
1.12
17.9
50
6.3
102
1.6
9.3
153
2.4
ms
ms
s
s
ns
V
ADM86___W
ADM86___X
ADM86___Y
ADM86___Z
25.6
38.4
WDI Pulse Width
WDI Input Threshold
VIL=0.3xVCC, VIH=0.7xVCC,
0.3xVCC
0.7xVCC
160
V
µA
µA
WDI Input Current
120
-15
VWDI= VCC, time average
VWDI=0, time average
-20
ABSOLUTE MAXIMUM RATINGS
Table 3. TA = 25°C unless otherwise noted.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or
any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Parameter
Rating
VCC
-0.3V to +6V
-0.3V to +6V
20mA
RESET
/RESET
RESET
Output Current (RESET,
)
Operating Temperature Range
Storage Temperature Range
-40°C to +85°C
-65°C to +150°C
146°C/W
θJA Thermal Impedance, SC70
Lead Temperature
Soldering (10 sec)
Vapour Phase (60 sec)
Infrared (15 sec)
300°C
215°C
220°C
Rev. PrB | Page 3 of 7
ADM8611/ADM8616/ADM8617/ADM8618
Preliminary Technical Data
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
4
V
CC
RESET/RESET
1
ADM861x
TOP VIEW
(Not to Scale)
2
3
GND
MR/WDI
Table 4. Pin Functional Descriptions
Pin No.
Name
Description
1
RESET
Active-Low Reset Output, which is asserted whenever VCC is below the reset.threshold, VTH
Push-Pull Output Stage for ADM8616.
.
(ADM8616/ADM8617)
Open-Drain Output Stage for ADM8617.
RESET (ADM8618)
MR
Active-High, Push-Pull Reset Output.
2
Manual Reset Input. This is an active-low input which, when forced low for at least 1µs,
generates a reset.
(ADM8611)
Features a 52k⍀ internal pull-up.
WDI
Watchdog Input. Generates a reset if the logic level on the pin remains low or high for the
duration of the watchdog timeout. The timer is cleared if a logic transition occurs on this
pin or if a reset is generated. Leave floating to disable the watchdog timer.
(ADM8616/ADM8617/ADM8618)
3
4
GND
VCC
Ground
Power Supply Voltage being Monitored.
ESD 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 this product 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. PrB | Page 4 of 7
Preliminary Technical Data
OUTLINE DIMENSIONS
ADM8611/ADM8616/ADM8617/ADM8618
2.20
1.80
1.35
1.15
4
3
2.40
1.80
1
2
PIN 1
0.65 BSC
0.50 BSC
1.00
0.80
1.10
0.80
0.18
0.10
0.30
0.10
SEATING
PLANE
0.10 MAX
0.70
0.50
0.30
0.15
0.10 COPLANARITY
PACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC82
EXCEPT FOR WIDTH OF PIN-2 AS SHOWN
Figure 2. 4-Lead Plastic Surface Mount Package [SC70]
(KS-4)
Dimensions shown in millimeters
Rev. PrA | Page 5 of 7
ADM8611/ADM8616/ADM8617/ADM8618
Preliminary Technical Data
ORDERING GUIDE (ADM8611/ADM8616)
Model1
Reset Threshold (V)
4.63
4.63
4.38
4.38
3.08
3.08
2.93
2.93
2.63
2.63
2.32
2.32
2.19
2.19
1.67
1.67
1.58
1.58
4.63
4.63
4.38
4.38
3.08
3.08
2.93
2.93
2.63
2.63
2.32
2.32
2.19
2.19
1.67
1.67
1.58
1.58
Temperature Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Quantity
10k
3k
Package Type
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
Branding
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0F
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
N0G
ADM8611LABKS-RL
ADM8611LABKS-RL7
ADM8611MABKS-RL
ADM8611MABKS-RL7
ADM8611TABKS-RL
ADM8611TABKS-RL7
ADM8611SABKS-RL
ADM8611SABKS-RL7
ADM8611RABKS-RL
ADM8611RABKS-RL7
ADM8611ZABKS-RL
ADM8611ZABKS-RL7
ADM8611YABKS-RL
ADM8611YABKS-RL7
ADM8611WABKS-RL
ADM8611WABKS-RL7
ADM8611VABKS-RL
ADM8611VABKS-RL7
ADM8616LAKS-RL
ADM8616LAKS-RL7
ADM8616MAKS-RL
ADM8616MAKS-RL7
ADM8616TAKS-RL
ADM8616TAKS-RL7
ADM8616SAKS-RL
ADM8616SAKS-RL7
ADM8616RAKS-RL
ADM8616RAKS-RL7
ADM8616ZAKS-RL
ADM8616ZAKS-RL7
ADM8616YAKS-RL
ADM8616YAKS-RL7
ADM8616WAKS-RL
ADM8616WAKS-RL7
ADM8616VAKS-RL
ADM8616VAKS-RL7
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
Rev. PrB | Page 6 of 7
Preliminary Technical Data
ADM8611/ADM8616/ADM8617/ADM8618
ORDERING GUIDE (ADM8617/ADM8618)
Model
Reset Threshold (V)
4.63
Temperature Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Quantity
10k
3k
Package Type
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
SC70-4
Branding
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0H
N0J
ADM8617LACYKS-RL
ADM8617LACYKS-RL7
ADM8617MACYKS-RL
ADM8617MACYKS-RL7
ADM8617TACYKS-RL
ADM8617TACYKS-RL7
ADM8617SACYKS-RL
ADM8617SACYKS-RL7
ADM8617RACYKS-RL
ADM8617RACYKS-RL7
ADM8617ZACYKS-RL
ADM8617ZACYKS-RL7
ADM8617YACYKS-RL
ADM8617YACYKS-RL7
ADM8617WACYKS-RL
ADM8617WACYKS-RL7
ADM8617VACYKS-RL
ADM8617VACYKS-RL7
ADM8618LACYKS-RL
ADM8618LACYKS-RL7
ADM8618MACYKS-RL
ADM8618MACYKS-RL7
ADM8618TACYKS-RL
ADM8618TACYKS-RL7
ADM8618SACYKS-RL
ADM8618SACYKS-RL7
ADM8618RACYKS-RL
ADM8618RACYKS-RL7
ADM8618ZACYKS-RL
ADM8618ZACYKS-RL7
ADM8618YACYKS-RL
ADM8618YACYKS-RL7
ADM8618WACYKS-RL
ADM8618WACYKS-RL7
ADM8618VACYKS-RL
ADM8618VACYKS-RL7
4.63
4.38
4.38
3.08
3.08
2.93
2.93
2.63
2.63
2.32
2.32
2.19
2.19
1.67
1.67
1.58
1.58
4.63
4.63
4.38
4.38
3.08
3.08
2.93
2.93
2.63
2.63
2.32
2.32
2.19
2.19
1.67
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
10k
3k
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
N0J
1.67
1.58
1.58
10k
3k
N0J
1 Entries in bold type are standard models. Contact factory for availability of non-standard models.
©
2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective companies.
Printed in the U.S.A. PR04795-0-3/04(PrA)
Rev. PrA | Page 7 of 7
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