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ADM8697ARWZ

更新时间： 2024-09-23 20:00:07
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
13页 331K
描述
Microprocessor Supervisor with Chip Enable Signals, Adjustable Low Line Voltage Monitor, Adjustable Watchdog Timer, Low Line, Power Fail and Watchdog Status Outputs, Reduced Power Consumption. Upgrade for ADM697

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ADM8697ARWZ 数据手册

 浏览型号ADM8697ARWZ的Datasheet PDF文件第2页浏览型号ADM8697ARWZ的Datasheet PDF文件第3页浏览型号ADM8697ARWZ的Datasheet PDF文件第4页浏览型号ADM8697ARWZ的Datasheet PDF文件第5页浏览型号ADM8697ARWZ的Datasheet PDF文件第6页浏览型号ADM8697ARWZ的Datasheet PDF文件第7页 
Microprocessor  
Supervisory Circuits  
a
ADM8696/ADM8697  
FUNCTIO NAL BLO CK D IAGRAMS  
FEATURES  
Upgrade for ADM696/ ADM697, MAX696/ MAX697  
Specified Over Tem perature  
BATT ON  
V
Adjustable Low Line Voltage Monitor  
Pow er OK/ Reset Tim e Delay  
BATT  
V
OUT  
Reset Assertion Dow n to 1 V VCC  
Watchdog Tim er—100 m s, 1.6 s, or Adjustable  
Low Sw itch On Resistance  
0.7 ⍀ Norm al, 7 ⍀ in Backup  
400 nA Standby Current  
Autom atic Battery Backup Sw itching (ADM8696)  
Fast On-Board Gating of Chip Enable Signals (ADM8697)  
Voltage Monitor for Pow er Fail or Low Battery Warning  
Also Available in TSSOP Package  
Qualified for Automotive Applications  
V
CC  
LL  
IN  
LOW LINE  
RESET  
RESET GENERATOR  
RESET  
OSC IN  
TIMEBASE FOR RESET  
AND WATCHDOG  
OSC SEL  
WATCHDOG  
OUTPUT (WDO)  
WATCHDOG  
TIMER  
APPLICATIONS  
Microprocessor Systems  
Computers  
Controllers  
Intelligent Instruments  
Automotive Systems  
Critical µP Power Monitoring  
WATCHDOG  
INPUT (WDI)  
WATCHDOG  
TRANSITION DETECTOR  
ADM8696  
POWER FAIL  
INPUT (PFI)  
POWER FAIL  
OUTPUT (PFO)  
1.3V  
GENERAL D ESCRIP TIO N  
CE  
LL  
IN  
CE  
T he ADM8696/ADM8697 supervisory circuits offer complete  
single chip solutions for power supply monitoring and battery  
control functions in microprocessor systems. T hese functions  
include µP reset, backup battery switchover, watchdog timer,  
CMOS RAM write protection and power failure warning.  
OUT  
IN  
LOW LINE  
RESET  
RESET GENERATOR  
RESET  
T he ADM8696/ADM8697 are available in 16-pin DIP and small  
outline packages (including T SSOP) and provide the following  
functions:  
OSC IN  
TIMEBASE FOR RESET  
AND WATCHDOG  
OSC SEL  
WATCHDOG  
OUTPUT (WDO)  
WATCHDOG  
TIMER  
1. Power-On Reset output during power-up, power-down and  
brownout conditions. T he RESET voltage threshold is  
adjustable using an external voltage divider. T he RESET out-  
put remains operational with VCC as low as 1 V.  
WATCHDOG  
INPUT (WDI)  
WATCHDOG  
TRANSITION DETECTOR  
ADM8697  
POWER FAIL  
INPUT (PFI)  
POWER FAIL  
OUTPUT (PFO)  
2. A Reset pulse if the optional watchdog timer has not been  
toggled within specified time.  
1.3V  
3. Separate watchdog timeout and low line status outputs.  
4. Adjustable reset and watchdog timeout periods.  
T he ADM8696/ADM8697 is fabricated using an advanced  
epitaxial CMOS process combining low power consumption  
(0.7 mW), extremely fast Chip Enable gating (2 ns) and high re-  
liability. RESET assertion is guaranteed with VCC as low as 1 V.  
In addition, the power switching circuitry is designed for mini-  
mal voltage drop thereby permitting increased output current drive  
of up to 100 mA without the need for an external pass transistor.  
5. A 1.3 V threshold detector for power fail warning, low battery  
detection or to monitor a power supply other than VCC  
.
6. Battery backup switching for CMOS RAM, CMOS micro-  
processor or other low power logic (ADM8696).  
7. Write protection of CMOS RAM or EEPROM (ADM8697).  
REV. A  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700  
Fax: 617/ 326-8703  
World Wide Web Site: http:/ / w w w .analog.com  
©1997-2010 Analog Devices, Inc. All rights reserved.  
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ADM8697ARWZ 替代型号

型号 品牌 替代类型 描述 数据表
ADM8697ARW ADI

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