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參數資料
| 型號： | ADM6822WYRJZ-RL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5 |
| 封裝： | LEAD FREE, SOT-23, 5 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 219K |
| 代理商： | ADM6822WYRJZ-RL7 |
Low Voltage Supervisory Circuits with
Watchdog and Manual Reset in 5-Lead SOT-23
ADM6821/ADM6822/ADM6823/ADM6824/ADM6825
Rev. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
Precision low voltage monitoring
9 reset threshold options: 1.58 V to 4.63 V
140 ms (min) reset timeout
Watchdog timer with 1.6 sec timeout
Manual reset input
Reset output stages
Push-pull active-low
Open-drain active-low
Push-pull active-high
Low power consumption (7 μA)
Guaranteed reset output valid to VCC = 1 V
Power supply glitch immunity
Specified from 40°C to +125°C
5-lead SOT-23 package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
FUNCTIONAL BLOCK DIAGRAM
ADM6823
VCC
MR
GND
WDI
RESET
GENERATOR
WATCHDOG
DETECTOR
DEBOUNCE
VREF
04535-001
Figure 1.
GENERAL DESCRIPTION
The ADM682x are supervisory circuits that monitor power
supply voltage levels and code execution integrity in
microprocessor-based systems. As well as providing power-on
reset signals, an on-chip watchdog timer can reset the
microprocessor if it fails to strobe within a preset timeout
period. A reset signal can also be asserted by means of an
external push-button through a manual reset input. The parts
feature different combinations of watchdog input and manual
reset input and output stage configurations, as shown in Table 1.
Each part is available in nine reset threshold options, ranging
from 1.58 V to 4.63 V. The reset and watchdog timeout periods
are fixed at 140 ms (min) and 1.6 sec (typ), respectively.
The ADM682x are available in 5-lead SOT-23 packages and
typically consume only 7 μA, making them suitable for use in
low power, portable applications.
Table 1. Selection Table
Output Stage
Part No.
Watchdog Timer
Manual Reset
RESET
ADM6821
Yes
-
Push-Pull
ADM6822
Yes
Open-Drain
-
ADM6823
Yes
Push-Pull
-
ADM6824
Yes
-
Push-Pull
ADM6825
-
Yes
Push-Pull
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADM6822YART-RL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23 |
| ADM6822YART-RL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23 |
| ADM6822ZART-RL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23 |
| ADM6822ZART-RL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23 |
| ADM6823 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23 |
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