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  • 北京元坤伟业科技有限公司

         该会员已使用本站17年以上

  • ADM823SYRJZ-R7
  • 数量-
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  • -
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  • 010-62104931、62106431、62104891、62104791 QQ:857273081QQ:1594462451
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  • ADM823SYRJZ-R7图
  • 深圳市华来深电子有限公司

     该会员已使用本站13年以上
  • ADM823SYRJZ-R7 现货库存
  • 数量3000 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号21+ 
  • 受权代理!全新原装现货特价热卖!
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    QQ:876098337QQ:876098337 复制
  • 0755-83238902 QQ:1258645397QQ:876098337
  • ADM823SYRJZ-R7图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站12年以上
  • ADM823SYRJZ-R7 现货库存
  • 数量3000 
  • 厂家TI 
  • 封装SOT23-5 
  • 批号25+ 
  • 原装正品特价销售
  • QQ:867789136QQ:867789136 复制
    QQ:1245773710QQ:1245773710 复制
  • 0755-82772189 QQ:867789136QQ:1245773710
  • ADM823SYRJZ-R7图
  • HECC GROUP CO.,LIMITED

     该会员已使用本站17年以上
  • ADM823SYRJZ-R7 现货库存
  • 数量5000 
  • 厂家ADI 
  • 封装SC70-5 
  • 批号24+ 
  • 原装假一赔百,深圳现货,北美、新加坡可发货
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  • 755-83950019 QQ:800888908
  • ADM823SYRJZ-R7图
  • 深圳市能元时代电子有限公司

     该会员已使用本站10年以上
  • ADM823SYRJZ-R7 现货库存
  • 数量92000 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号24+ 
  • 原装现货假一罚十!可含税长期供货
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    QQ:2885658492QQ:2885658492 复制
  • 0755-84502810 QQ:2885637848QQ:2885658492
  • ADM823SYRJZ-R7图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • ADM823SYRJZ-R7 现货库存
  • 数量7350 
  • 厂家ADI 
  • 封装SOT23 
  • 批号新年份 
  • 新到现货、一手货源、当天发货、bom配单
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  • 0755-84507451 QQ:1435424310
  • ADM823SYRJZ-R7图
  • 万三科技(深圳)有限公司

     该会员已使用本站2年以上
  • ADM823SYRJZ-R7
  • 数量660000 
  • 厂家ADI(亚德诺)/LINEAR(凌特) 
  • 封装SOT-23-5 
  • 批号23+ 
  • 支持实单/只做原装
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  • 0755-21006672 QQ:3008961398
  • ADM823SYRJZ-R7图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • ADM823SYRJZ-R7
  • 数量13880 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号21+ 
  • 公司只售原装 支持实单
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  • 0755-88917743 QQ:2881495751
  • ADM823SYRJZ-R7图
  • 深圳市瑞天芯科技有限公司

     该会员已使用本站7年以上
  • ADM823SYRJZ-R7
  • 数量20000 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号22+ 
  • 深圳现货库存,保证原装正品
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  • 15973558688 QQ:1940213521
  • ADM823SYRJZ-R7图
  • 深圳市一线半导体有限公司

     该会员已使用本站11年以上
  • ADM823SYRJZ-R7
  • 数量30000 
  • 厂家Analog Devices Inc. 
  • 封装 
  • 批号 
  • 全新原装部分现货其他订货
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  • 0755-88608801多线 QQ:2881493920QQ:2881493921
  • ADM823SYRJZ-R7图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • ADM823SYRJZ-R7
  • 数量85000 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号23+ 
  • 真实库存全新原装正品!代理此型号
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  • 0755-23605827 QQ:2881495753
  • ADM823SYRJZ-R7图
  • 深圳市隆鑫创展电子有限公司

     该会员已使用本站15年以上
  • ADM823SYRJZ-R7
  • 数量30000 
  • 厂家VISHAY 
  • 封装QFN 
  • 批号2022+ 
  • 电子元器件一站式配套服务QQ:122350038
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  • 0755-82812278 QQ:2355878626QQ:2850299242
  • ADM823SYRJZ-R7图
  • 深圳市创思克科技有限公司

     该会员已使用本站2年以上
  • ADM823SYRJZ-R7
  • 数量7800 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号20+ 
  • 全新原装原厂实力挺实单欢迎来撩
  • QQ:1092793871QQ:1092793871 复制
  • -0755-88910020 QQ:1092793871
  • ADM823SYRJZ-R7图
  • 深圳市恒意创鑫电子有限公司

     该会员已使用本站10年以上
  • ADM823SYRJZ-R7
  • 数量9000 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号22+ 
  • 全新原装公司现货,支持实单
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  • 0755-83235429 QQ:1493457560
  • ADM823SYRJZ-R7图
  • 深圳市英德州科技有限公司

     该会员已使用本站2年以上
  • ADM823SYRJZ-R7
  • 数量55000 
  • 厂家ADI(亚德诺) 
  • 封装SOT-23-5 
  • 批号2年内 
  • 全新原装 货源稳定 长期供应 提供配单
  • QQ:2355734291QQ:2355734291 复制
  • -0755-88604592 QQ:2355734291
  • ADM823SYRJZ-R7图
  • 北京耐芯威科技有限公司

     该会员已使用本站12年以上
  • ADM823SYRJZ-R7
  • 数量5000 
  • 厂家Analog Devices Inc. 
  • 封装SOT-23-5 
  • 批号21+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
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  • 96-010-62104931 QQ:2880824479QQ:1344056792
  • ADM823SYRJZ-R7图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • ADM823SYRJZ-R7
  • 数量
  • 厂家ADI 
  • 封装5-Lead SOT-23 
  • 批号新批次 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • ADM823SYRJZ-R7图
  • 上海意淼电子科技有限公司

     该会员已使用本站14年以上
  • ADM823SYRJZ-R7
  • 数量20000 
  • 厂家ADI 
  • 封装原厂封装 
  • 批号23+ 
  • 原装现货热卖!请联系吴先生 13681678667
  • QQ:617677003QQ:617677003 复制
  • 15618836863 QQ:617677003
  • ADM823SYRJZ-R7图
  • 北京耐芯威科技有限公司

     该会员已使用本站13年以上
  • ADM823SYRJZ-R7
  • 数量5000 
  • 厂家Analog Devices Inc. 
  • 封装SOT-23-5 
  • 批号21+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 86-010-010-62104931 QQ:2880824479QQ:1344056792
  • ADM823SYRJZ-R7图
  • 深圳市特拉特科技有限公司

     该会员已使用本站2年以上
  • ADM823SYRJZ-R7
  • 数量30000 
  • 厂家ADI 
  • 封装SOT23 
  • 批号22+ 
  • 只做原装公司现货一级代理销售
  • QQ:709809857QQ:709809857 复制
  • 0755-82531732 QQ:709809857
  • ADM823SYRJZ-R7图
  • 深圳市华芯盛世科技有限公司

     该会员已使用本站13年以上
  • ADM823SYRJZ-R7
  • 数量865000 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号最新批号 
  • 一级代理,原装特价现货!
  • QQ:2881475757QQ:2881475757 复制
  • 0755-83225692 QQ:2881475757
  • ADM823SYRJZ-R7图
  • 深圳德田科技有限公司

     该会员已使用本站7年以上
  • ADM823SYRJZ-R7
  • 数量
  • 厂家新年份 
  • 封装12000 
  • 批号 
  • 原装正品现货,可出样品!!!
  • QQ:229754250QQ:229754250 复制
  • 0755-83254070 QQ:229754250
  • ADM823SYRJZ-R7图
  • 深圳市创芯联科技有限公司

     该会员已使用本站9年以上
  • ADM823SYRJZ-R7
  • 数量13000 
  • 厂家AD 
  • 封装SOT23-5 
  • 批号24+ 
  • 原厂货源/正品保证,诚信经营,欢迎询价
  • QQ:1219895042QQ:1219895042 复制
    QQ:3061298850QQ:3061298850 复制
  • 0755-23606513 QQ:1219895042QQ:3061298850
  • ADM823SYRJZ-R7图
  • 深圳市羿芯诚电子有限公司

     该会员已使用本站7年以上
  • ADM823SYRJZ-R7
  • 数量8800 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号新年份 
  • 羿芯诚只做原装,原厂渠道,价格优势可谈!
  • QQ:2853992132QQ:2853992132 复制
  • 0755-82570683 QQ:2853992132
  • ADM823SYRJZ-R7图
  • 深圳市芯鹏泰科技有限公司

     该会员已使用本站8年以上
  • ADM823SYRJZ-R7
  • 数量7536 
  • 厂家Analog Devices Inc. 
  • 封装SOT-23-5 
  • 批号23+ 
  • PMIC监控器IC原装现货
  • QQ:3004306594QQ:3004306594 复制
  • 0755-82777852 QQ:3004306594
  • ADM823SYRJZ-R7图
  • 千层芯半导体(深圳)有限公司

     该会员已使用本站9年以上
  • ADM823SYRJZ-R7
  • 数量44300 
  • 厂家TI 
  • 封装SOT23-5 
  • 批号2019+ 
  • TI一级代理专营品牌绝对进口原装假一赔十
  • QQ:2685694974QQ:2685694974 复制
    QQ:2593109009QQ:2593109009 复制
  • 0755-83978748,0755-23611964,13760152475 QQ:2685694974QQ:2593109009
  • ADM823SYRJZ-R7图
  • 深圳市恒益昌科技有限公司

     该会员已使用本站6年以上
  • ADM823SYRJZ-R7
  • 数量3000 
  • 厂家TI 
  • 封装SOT23-5 
  • 批号25+ 
  • 原装正品长期供货
  • QQ:3336148967QQ:3336148967 复制
    QQ:974337758QQ:974337758 复制
  • 0755-82723761 QQ:3336148967QQ:974337758
  • ADM823SYRJZ-R7图
  • 深圳市赛尔通科技有限公司

     该会员已使用本站12年以上
  • ADM823SYRJZ-R7
  • 数量42000 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号NEW 
  • 原装正品可售样版可大量供货
  • QQ:1134344845QQ:1134344845 复制
    QQ:847984313QQ:847984313 复制
  • 86-0755-83536093 QQ:1134344845QQ:847984313
  • ADM823SYRJZ-R7图
  • 深圳市湘达电子有限公司

     该会员已使用本站10年以上
  • ADM823SYRJZ-R7
  • 数量3300 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号2020+ 
  • 全新原装现货,一片也是批量价。
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  • 0755-83229772 QQ:215672808
  • ADM823SYRJZ-R7图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • ADM823SYRJZ-R7
  • 数量6709 
  • 厂家AD 
  • 封装SOT23-5 
  • 批号24+ 
  • 全新原装现货,欢迎询购!
  • QQ:1950791264QQ:1950791264 复制
    QQ:221698708QQ:221698708 复制
  • 0755-83222787 QQ:1950791264QQ:221698708
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  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • ADM823SYRJZ-R7
  • 数量100 
  • 厂家ON/安森美 
  • 封装NA/ 
  • 批号23+ 
  • 优势代理渠道,原装正品,可全系列订货开增值税票
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    QQ:3007947087QQ:3007947087 复制
  • 0755-82546830 QQ:3007977934QQ:3007947087
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  • 深圳市晶美隆科技有限公司

     该会员已使用本站15年以上
  • ADM823SYRJZ-R7
  • 数量26800 
  • 厂家ADI/亚德诺 
  • 封装TSOT23-5 
  • 批号24+ 
  • 假一罚十,原装进口正品现货供应,价格优势。
  • QQ:198857245QQ:198857245 复制
  • 0755-82865294 QQ:198857245
  • ADM823SYRJZ-R7图
  • 集好芯城

     该会员已使用本站13年以上
  • ADM823SYRJZ-R7
  • 数量13681 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号最新批次 
  • 原装原厂 现货现卖
  • QQ:3008092965QQ:3008092965 复制
    QQ:3008092965QQ:3008092965 复制
  • 0755-83239307 QQ:3008092965QQ:3008092965
  • ADM823SYRJZ-R7图
  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • ADM823SYRJZ-R7
  • 数量37048 
  • 厂家ADI(亚德诺) 
  • 封装SOT23-5 
  • 批号23+ 
  • 原厂可订货,技术支持,直接渠道。可签保供合同
  • QQ:3007947087QQ:3007947087 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-83061789 QQ:3007947087QQ:3007947087
  • ADM823SYRJZ-R7图
  • 深圳市宏诺德电子科技有限公司

     该会员已使用本站8年以上
  • ADM823SYRJZ-R7
  • 数量68000 
  • 厂家ADI 
  • 封装SOT-23-5 
  • 批号22+ 
  • 全新进口原厂原装,优势现货库存,有需要联系电话:18818596997 QQ:84556259
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  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • ADM823SYRJZ-R7
  • 数量64127 
  • 厂家ADI 
  • 封装SOT23-5 
  • 批号2023+ 
  • 绝对原装全新正品现货/优势渠道商、原盘原包原盒
  • QQ:364510898QQ:364510898 复制
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  • 0755-83777708“进口原装正品专供” QQ:364510898QQ:515102657
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  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • ADM823SYRJZ-R7
  • 数量12500 
  • 厂家ADI/亚德诺 
  • 封装SOT23-5 
  • 批号2023+ 
  • 绝对原装正品全新深圳进口现货,优质渠道供应商!
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  • ADM823SYRJZ-R7.图
  • 深圳市集创讯科技有限公司

     该会员已使用本站5年以上
  • ADM823SYRJZ-R7.
  • 数量15000 
  • 厂家ADI/亚德诺 
  • 封装 
  • 批号24+ 
  • 原装进口正品现货,假一罚十价格优势
  • QQ:2885393494QQ:2885393494 复制
    QQ:2885393495QQ:2885393495 复制
  • 0755-83244680 QQ:2885393494QQ:2885393495
  • ADM823SYRJZ-R7图
  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • ADM823SYRJZ-R7
  • 数量5000 
  • 厂家Analog Devices Inc. 
  • 封装SOT-23-5 
  • 批号2024+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
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产品型号ADM823SYRJZ-R7的概述

芯片ADM823SYRJZ-R7的概述 ADM823SYRJZ-R7是一款高性能的监控电压芯片,专为低电流消费应用而设计,广泛应用于电池供电设备、移动通信和电子消费品等领域。这款芯片在执行电压监测时具备高精度和低功耗的特点,能够为系统提供可靠的电量监测,从而保护设备免受过压或欠压的损害。ADM823SYRJZ-R7的设计理念是将复杂的电源监控功能集成于一颗小型封装内,在满足小型化需求的同时,提供高效的性能。 芯片ADM823SYRJZ-R7的详细参数 ADM823SYRJZ-R7具备以下主要技术参数: - 工作电压范围:1.2V至6V - 监控电压范围:1.2V、1.3V、1.5V、1.6V、1.8V、2.5V、2.7V、3.0V - 过压监控阈值:可选(设定范围内) - 欠压监控阈值:可选(设定范围内) - 电池电压监测精度:±2% - 功耗:典型值为100nA - 输出类型:开集电...

产品型号ADM823SYRJZ-R7的Datasheet PDF文件预览

Supervisory Circuits with Watchdog and  
Manual Reset in 5-Lead SC70 and SOT-23  
ADM823/ADM824/ADM825  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Precision 2.5 V to 5 V power supply monitor  
7 reset threshold options: 2.19 V to 4.63 V  
140 ms (minimum) reset timeout  
Watchdog timer with 1.6 sec timeout (ADM823, ADM824)  
Manual reset input (ADM823, ADM825)  
Push-pull output stages  
ADM823  
V
CC  
V
CC  
RESET  
GENERATOR  
RESET  
V
REF  
DEBOUNCE  
MR  
(ADM823)  
, RESET (ADM824/ADM825)  
RESET  
RESET  
WATCHDOG  
DETECTOR  
Low power consumption: 5 µA  
Guaranteed reset output valid to VCC = 1 V  
Power supply glitch immunity  
Specified over automotive temperature range  
5-lead SC70 and SOT-23 packages  
GND  
WDI  
Figure 1.  
APPLICATIONS  
Microprocessor systems  
Computers  
Controllers  
Intelligent instruments  
Portable equipment  
GENERAL DESCRIPTION  
The ADM823/ADM824/ADM825 are supervisory circuits that  
monitor power supply voltage levels and code execution integrity  
in microprocessor-based systems. In addition to 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 an external push-  
button, through a manual reset input. The three parts feature  
different combinations of watchdog input, manual reset input,  
and output stage configuration, as shown in Table 1.  
These parts are available in a choice of seven reset threshold  
options ranging from 2.19 V to 4.63 V. The reset and watchdog  
timeout periods are fixed at 140 ms (minimum) and 1.6 sec  
(typical), respectively.  
The ADM823/ADM824/ADM825 are available in 5-lead SC70  
and SOT-23 packages and typically consume only 5 µA, making  
them suitable for use in low power, portable applications.  
Table 1. Selection Table  
Output Stage  
RESET  
RESET  
Part No.  
ADM823  
ADM824  
ADM825  
Watchdog Timer  
Manual Reset  
Yes  
Yes  
Yes  
Push-Pull  
Push-Pull  
Push-Pull  
Push-Pull  
Push-Pull  
Yes  
Rev. D  
Document Feedback  
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Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
 
ADM823/ADM824/ADM825  
Data Sheet  
TABLE OF CONTENTS  
Features .............................................................................................. 1  
Reset Output ..................................................................................9  
Manual Reset Input .......................................................................9  
Watchdog Input .............................................................................9  
Applications Information .............................................................. 10  
Watchdog Input Current ........................................................... 10  
Negative-Going VCC Transients ................................................ 10  
Ensuring Reset Valid to VCC = 0 V........................................... 10  
Watchdog Software Considerations......................................... 10  
Outline Dimensions....................................................................... 11  
Ordering Guide .......................................................................... 11  
Applications....................................................................................... 1  
Functional Block Diagram .............................................................. 1  
General Description ......................................................................... 1  
Revision History ............................................................................... 2  
Specifications..................................................................................... 3  
Absolute Maximum Ratings............................................................ 5  
ESD Caution.................................................................................. 5  
Pin Configurations and Function Descriptions ........................... 6  
Typical Performance Characteristics ............................................. 7  
Circuit Description........................................................................... 9  
REVISION HISTORY  
7/13—Rev. C to Rev. D  
Change to Figure 16 ..........................................................................9  
Updated Outline Dimensions........................................................11  
10/10—Rev. B to Rev. C  
Updated Outline Dimensions....................................................... 11  
Changes to Ordering Guide .......................................................... 11  
5/08—Rev. A to Rev. B  
Changes to General Description Section ...................................... 1  
Changes to Table 4............................................................................ 6  
Changes to Ordering Guide .......................................................... 11  
2/07—Rev. 0 to Rev. A  
Updated Format..................................................................Universal  
Changes to Ordering Guide .......................................................... 11  
10/04—Revision 0: Initial Version  
Rev. D | Page 2 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
SPECIFICATIONS  
VCC = 4.75 V to 5.5 V for ADM82xL, VCC = 4.5 V to 5.5 V for ADM82xM, VCC = 3.15 V to 3.6 V for ADM82xT, VCC = 3 V to 3.6 V  
for ADM82xS, VCC = 2.7 V to 3.6 V for ADM82xR, VCC = 2.38 V to 2.75 V for ADM82xZ, VCC = 2.25 V to 2.75 V for ADM82xY,  
TA = TMIN to TMAX, unless otherwise noted.  
Table 2.  
Parameter  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments  
SUPPLY  
VCC Operating Voltage Range  
1
1.2  
5.5  
24  
12  
V
V
µA  
TA = 0°C to 70°C  
TA = TMIN to TMAX  
WDI and MR unconnected  
ADM82xL/M  
WDI and MR unconnected  
ADM82xT/S/R/Z/Y  
Supply Current  
10  
5
µA  
RESET THRESHOLD VOLTAGE  
ADM82xL  
4.56  
4.50  
4.31  
4.25  
3.04  
3.00  
2.89  
2.85  
2.59  
2.55  
2.28  
2.25  
2.16  
2.13  
4.63  
4.38  
3.08  
2.93  
2.63  
2.32  
2.19  
4.70  
4.75  
4.45  
4.50  
3.11  
3.15  
2.96  
3.00  
2.66  
2.70  
2.35  
2.38  
2.22  
2.25  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
ADM82xM  
ADM82xT  
ADM82xS  
ADM82xR  
ADM82xZ (SC70 Only)  
ADM82xY (SC70 Only)  
RESET THRESHOLD TEMPERATURE COEFFICIENT  
RESET THRESHOLD HYSTERESIS  
40  
10  
5
ppm/°C  
mV  
mV  
ms  
µs  
ADM82xL/M  
ADM82xT/S/R/Z/Y  
RESET TIMEOUT PERIOD  
VCC TO RESET DELAY  
RESET/RESET  
140  
200  
40  
280  
VTH − VCC = 100 mV  
RESET Output Voltage  
0.4  
0.3  
0.3  
V
V
V
V
V
V
V
V
VCC = VTH min, ISINK = 3.2 mA,  
ADM82xL/M  
VCC = VTH min, ISINK = 1.2 mA,  
ADM82xT/S/R/Z/Y  
TA = 0°C to 70°C, VCC = 1 V,  
VCC falling, ISINK = 50 µA  
VCC = VTH max, ISOURCE = 120 µA,  
ADM82xL/M  
VCC = VTH max, ISOURCE = 30 µA,  
ADM82xT/S/R/Z/Y  
VCC = VTH max, ISINK = 3.2 mA,  
ADM82xL/M  
VCC = VTH max, ISINK = 1.2 mA,  
ADM82xT/S/R/Z/Y  
VCC ≥ 1.8 V, ISOURCE = 150 µA  
VCC − 1.5  
0.8 × VCC  
RESET Output Voltage (ADM824, ADM825)  
0.4  
0.3  
0.8 × VCC  
Rev. D | Page 3 of 12  
 
ADM823/ADM824/ADM825  
Data Sheet  
Parameter  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments  
WATCHDOG INPUT (ADM823, ADM824)  
Watchdog Timeout Period  
WDI Pulse Width  
WDI Input Threshold, VIL  
WDI Input Current  
1.12  
50  
0.7 × VCC  
1.6  
2.40  
sec  
ns  
V
µA  
µA  
VIL = 0.4 V, VIH = 0.8 × VCC  
0.3 × VCC  
160  
120  
−15  
VWDI = VCC, time average  
VWDI = 0 V, time average  
−20  
MANUAL RESET INPUT (ADM823, ADM825)  
MR Input Threshold  
0.7 × VCC  
1
0.3 × VCC  
75  
V
MR Input Pulse Width  
µs  
ns  
kΩ  
ns  
MR Glitch Rejection  
100  
52  
MR Pull-Up Resistance  
MR to Reset Delay  
35  
500  
Rev. D | Page 4 of 12  
Data Sheet  
ADM823/ADM824/ADM825  
ABSOLUTE MAXIMUM RATINGS  
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.  
Table 3.  
Parameter  
Rating  
VCC  
−0.3 V to +6 V  
20 mA  
Output Current (RESET, RESET)  
All Other Pins  
Operating Temperature Range  
Storage Temperature Range  
θJA Thermal Impedance  
SC70  
−0.3 V to (VCC + 0.3 V)  
−40°C to +125°C  
−65°C to +150°C  
ESD CAUTION  
146°C/W  
270°C/W  
SOT-23  
Lead Temperature  
Soldering (10 sec)  
Vapor Phase (60 sec)  
Infrared (15 sec)  
300°C  
215°C  
220°C  
Rev. D | Page 5 of 12  
 
 
ADM823/ADM824/ADM825  
Data Sheet  
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS  
RESET  
GND  
MR  
1
2
3
5
V
RESET  
GND  
1
2
3
5
V
RESET  
GND  
1
2
3
5
V
CC  
CC  
CC  
ADM823  
ADM824  
ADM825  
TOP VIEW  
TOP VIEW  
TOP VIEW  
(Not to Scale)  
(Not to Scale)  
(Not to Scale)  
4
WDI  
RESET  
4
WDI  
RESET  
4
MR  
Figure 2. ADM823 Pin Configuration  
Figure 3. ADM824 Pin Configuration  
Figure 4. ADM825 Pin Configuration  
Table 4. Pin Function Descriptions  
Pin No.  
Mnemonic  
Description  
1
Active Low, Push-Pull Reset Output. Asserted whenever VCC is below the reset threshold, VTH  
.
RESET  
2
3
GND  
MR (ADM823)  
Ground.  
Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates  
a reset. It features a 52 kΩ internal pull-up.  
RESET (ADM824/ADM825)  
WDI (ADM823/ADM824)  
Active High, Push-Pull Reset Output.  
4
5
Watchdog Input. Generates a reset if the voltage 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.  
Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates  
a reset. It features a 52 kΩ internal pull-up.  
MR (ADM825)  
VCC  
Power Supply Voltage Being Monitored.  
Rev. D | Page 6 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
TYPICAL PERFORMANCE CHARACTERISTICS  
10.0  
9.5  
9.0  
8.5  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
ADM823L  
8.0  
7.5  
7.0  
6.5  
6.0  
ADM824Y  
5.5  
5.0  
4.5  
4.0  
3.5  
ADM825R  
40  
–40  
–20  
0
20  
60  
80  
100  
120  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 5. Supply Current vs. Temperature  
Figure 8. Reset Comparator Propagation Delay vs. Temperature (VCC Falling)  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
15  
10  
5
340  
320  
300  
280  
260  
240  
220  
200  
180  
160  
140  
120  
100  
0
–40  
–20  
0
20  
40  
60  
80  
100  
120  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5  
(V)  
TEMPERATURE (°C)  
V
CC  
Figure 6. Supply Current vs. Supply Voltage  
Figure 9. Manual Reset to Reset Propagation Delay vs. Temperature  
(ADM823/ADM825)  
1.05  
1.04  
1.03  
1.02  
1.01  
1.00  
0.99  
0.98  
0.97  
0.96  
0.95  
250  
240  
230  
220  
210  
200  
190  
180  
170  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 7. Normalized Reset Threshold vs. Temperature  
Figure 10. Reset Timeout Period vs. Temperature  
Rev. D | Page 7 of 12  
 
ADM823/ADM824/ADM825  
Data Sheet  
2.0  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
190  
180  
170  
160  
150  
140  
130  
120  
110  
100  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
–50  
0
50  
100  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 11. Watchdog Timeout Period vs. Temperature  
(ADM823/ADM824)  
Figure 13. Manual Reset Minimum Pulse Width vs. Temperature  
(ADM823/ADM825)  
160  
140  
120  
100  
80  
3.8  
3.6  
RESET OCCURS ABOVE GRAPH  
3.4  
NEGATIVE PULSE  
3.2  
3.0  
2.8  
2.6  
V
= 4.63V  
TH  
60  
40  
POSITIVE PULSE  
2.4  
2.2  
2.0  
20  
V
= 2.93V  
TH  
0
10  
100  
1000  
–40  
10  
60  
110  
160  
OVERDRIVE VOD (mV)  
TEMPERATURE (°C)  
Figure 12. Maximum VCC Transient Duration vs. Reset Threshold Overdrive  
Figure 14. Watchdog Input Minimum Pulse Width vs. Temperature  
(ADM823/ADM824)  
Rev. D | Page 8 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
CIRCUIT DESCRIPTION  
MANUAL RESET INPUT  
The ADM823/ADM824/ADM825 provide microprocessor  
supply voltage supervision by controlling the reset input of the  
microprocessor. 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 threshold.  
Errors are also avoided by allowing supply voltage stabilization  
with a fixed timeout reset pulse after the supply voltage rises  
above the threshold. In addition, problems with microprocessor  
code execution can be monitored and corrected with a watchdog  
timer (ADM823/ADM824). By including watchdog strobe  
instructions in microprocessor code, a watchdog timer can  
detect whether the microprocessor code breaks down or becomes  
stuck in an infinite loop. If this happens, the watchdog timer  
asserts a reset pulse that restarts the microprocessor in a known  
state. If the user detects a problem with the systems operation, a  
manual reset input is available (ADM823/ADM825) to reset the  
microprocessor with an external push-button, for example.  
MR  
The ADM823/ADM825 feature a manual reset input (  
)
MR  
which, when driven low, asserts the reset output. When  
transitions from low to high, reset remains asserted for the  
duration of the reset active timeout period before deasserting.  
MR  
The  
always high when unconnected. An external push-button  
MR  
input has a 52 kΩ internal pull-up so that the input is  
switch can be connected between  
user can generate a reset. Debounce circuitry for this purpose is  
MR  
and ground so that the  
integrated on chip. Noise immunity is provided on the  
input and fast, negative-going transients of up to 100 ns (typical)  
MR  
are ignored. A 0.1 µF capacitor between  
provides additional noise immunity.  
and ground  
WATCHDOG INPUT  
The ADM823/ADM824 feature a watchdog timer that monitors  
microprocessor activity. A timer circuit is cleared with every  
low-to-high or high-to-low logic transition on the watchdog  
input pin (WDI), which detects pulses as short as 50 ns. If the  
timer counts through the preset watchdog timeout period (tWD),  
reset is asserted. The microprocessor is required to toggle the  
WDI pin to avoid being reset. Failure of the microprocessor to  
toggle WDI within the timeout period, therefore, indicates a  
code execution error, and the reset pulse generated restarts the  
microprocessor in a known state.  
RESET OUTPUT  
The ADM823 features an active low, push-pull reset output, and  
the ADM824/ADM825 feature dual active low and active high  
push-pull reset outputs. For active low and active high outputs,  
the reset signal is guaranteed to be logic low and logic high,  
respectively, for VCC ≥ 1 V.  
The reset output is asserted when VCC is below the reset  
MR  
threshold (VTH), when  
is driven low, or when WDI is not  
In addition to logic transitions on WDI, the watchdog timer is  
also cleared by a reset assertion due to an undervoltage condi-  
serviced within the watchdog timeout period (tWD). Reset  
remains asserted for the duration of the reset active timeout  
MR  
tion on VCC or by  
being pulled low. When reset is asserted,  
MR  
period (tRP) after VCC rises above the reset threshold, after  
transitions from low to high, or after the watchdog timer times  
out. Figure 15 illustrates the behavior of the reset outputs.  
the watchdog timer is cleared and does not begin counting again  
until reset is deasserted. The watchdog timer can be disabled by  
leaving WDI floating or by three-stating the WDI driver.  
V
CC  
V
V
TH  
TH  
V
V
CC  
V
TH  
CC  
V
CC  
1V  
0V  
1V  
0V  
V
CC  
V
CC  
RESET  
WDI  
RESET  
RESET  
tRP  
tRP  
tWD  
tRP  
tRD  
0V  
0V  
V
CC  
V
CC  
tRP  
1V  
0V  
0V  
tRD  
Figure 16. Watchdog Timing Diagram  
Figure 15. Reset Timing Diagram  
Rev. D | Page 9 of 12  
 
 
 
 
 
ADM823/ADM824/ADM825  
Data Sheet  
APPLICATIONS INFORMATION  
WATCHDOG INPUT CURRENT  
WATCHDOG SOFTWARE CONSIDERATIONS  
To minimize the 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 at a low duty cycle  
reduces the effect of the large input current. When WDI is  
unconnected, a window comparator disconnects the watchdog  
timer from the reset output circuitry so that reset is not asserted  
when the watchdog timer times out.  
In implementing the microprocessor watchdog strobe code,  
quickly switching WDI low-to-high and then high-to-low  
(minimizing WDI high time) is desirable for current consumption  
reasons. However, a more effective way of using the watchdog  
function can be considered.  
A low-high-low WDI pulse within a given subroutine prevents  
the watchdog timing out. However, if the subroutine becomes  
stuck in an infinite loop, the watchdog cannot detect this cond-  
ition because the subroutine continues to toggle WDI. A more  
effective coding scheme for detecting this error involves using a  
slightly longer watchdog timeout. In the program that calls the  
subroutine, WDI is set high (see Figure 18). The subroutine sets  
WDI low when it is called. If the program executes without error,  
WDI is toggled high and low with every loop of the program.  
If the subroutine enters an infinite loop, WDI is kept low, the  
watchdog times out, and the microprocessor is reset.  
NEGATIVE-GOING VCC TRANSIENTS  
To avoid unnecessary resets caused by fast power supply  
transients, the ADM823/ADM824/ADM825 are equipped with  
glitch rejection circuitry. The typical performance characteristic  
in Figure 12 plots VCC transient duration vs. the transient mag-  
nitude. The curves show combinations of transient magnitude  
and duration for which a reset is not generated for 4.63 V and  
2.93 V reset threshold parts. For example, with the 2.93 V  
threshold, a transient that goes 100 mV below the threshold and  
lasts 8 µs typically does not cause a reset, but if the transient is  
any larger in magnitude or duration, a reset is generated. An  
optional 0.1 µF bypass capacitor mounted close to VCC provides  
additional glitch rejection.  
START  
SET WDI  
HIGH  
RESET  
ENSURING RESET VALID TO VCC = 0 V  
PROGRAM  
CODE  
Both active low and active high reset outputs are guaranteed to  
be valid for VCC as low as 1 V. However, by using an external  
resistor with push-pull configured reset outputs, valid outputs  
for VCC as low as 0 V are possible. For an active low reset output,  
INFINITE LOOP:  
WATCHDOG  
TIMES OUT  
SUBROUTINE  
a resistor connected between  
and ground pulls the output  
RESET  
SET WDI  
LOW  
low when it is unable to sink current. For an active high reset  
output, a resistor connected between RESET and VCC pulls the  
output high when it is unable to source current. A large resist-  
ance such as 100 kΩ should be used so that the reset output is  
not overloaded when VCC is above 1 V.  
RETURN  
Figure 18. Watchdog Flow Diagram  
V
CC  
V
V
CC  
CC  
100kΩ  
ADM823/  
ADM824/  
ADM825  
RESET  
RESET  
RESET  
ADM824/  
ADM825  
ADM823  
MICROPROCESSOR  
I/O  
RESET  
100kΩ  
MR  
WDI  
Figure 17. Ensuring Reset Valid to VCC = 0 V  
Figure 19. Typical Application Circuit  
Rev. D | Page 10 of 12  
 
 
 
 
 
 
Data Sheet  
ADM823/ADM824/ADM825  
OUTLINE DIMENSIONS  
2.20  
2.00  
1.80  
2.40  
2.10  
1.80  
5
1
4
3
1.35  
1.25  
1.15  
2
0.65 BSC  
1.10  
1.00  
0.90  
0.70  
0.40  
0.10  
0.80  
0.46  
0.36  
0.26  
0.22  
0.08  
SEATING  
PLANE  
0.10 MAX  
0.30  
0.15  
COPLANARITY  
0.10  
COMPLIANT TO JEDEC STANDARDS MO-203-AA  
Figure 20. 5-Lead Thin Shrink Small Outline Transistor Package [SC70]  
(KS-5)  
Dimensions shown in millimeters  
3.00  
2.90  
2.80  
5
1
4
3
3.00  
2.80  
2.60  
1.70  
1.60  
1.50  
2
0.95 BSC  
1.90  
BSC  
1.30  
1.15  
0.90  
0.20 MAX  
0.08 MIN  
1.45 MAX  
0.95 MIN  
0.55  
0.45  
0.35  
0.15 MAX  
0.05 MIN  
10°  
5°  
0°  
SEATING  
PLANE  
0.60  
BSC  
0.50 MAX  
0.35 MIN  
COMPLIANT TO JEDEC STANDARDS MO-178-AA  
Figure 21. 5-Lead Small Outline Transistor Package [SOT-23]  
(RJ-5)  
Dimensions shown in millimeters  
ORDERING GUIDE  
Model 1  
Reset Threshold (V)  
Temperature Range  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
Quantity Package Description Package Option Branding  
ADM823LYKSZ-R7  
ADM823LYRJ-R7  
ADM823LYRJZ-R7  
ADM823MYKSZ-R7  
ADM823MYRJZ-R7  
ADM823TYKSZ-R7  
ADM823TYRJ-R7  
ADM823TYRJZ-R7  
ADM823SYKSZ-R7  
ADM823SYRJ-R7  
ADM823SYRJZ-R7  
4.63  
4.63  
4.63  
4.38  
4.38  
3.08  
3.08  
3.08  
2.93  
2.93  
2.93  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
5-Lead SC70  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
M4L  
N07  
M4L  
M4L  
M4L  
M4L  
N07  
M4L  
M4L  
N07  
M4L  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
Rev. D | Page 11 of 12  
 
 
ADM823/ADM824/ADM825  
Data Sheet  
Model 1  
Reset Threshold (V)  
Temperature Range  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
Quantity Package Description Package Option Branding  
ADM823RYRJZ-R7  
ADM823ZYKSZ-R7  
ADM823YYKSZ-R7  
2.63  
2.32  
2.19  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SC70  
RJ-5  
KS-5  
KS-5  
RJ-5  
KS-5  
KS-5  
RJ-5  
RJ-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
RJ-5  
RJ-5  
KS-5  
M4L  
M4L  
M4L  
L9M  
M8G  
M8G  
M8G  
N09  
M8H  
N09  
M8H  
N09  
M8H  
M8H  
N09  
M8H  
N09  
ADM824LYRJZ-REEL7 4.63  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SC70  
ADM824SYKSZ-REEL7  
ADM824RYKSZ-REEL7  
ADM824SYRJZ-REEL7  
ADM825LYRJ-R7  
2.93  
2.63  
2.93  
4.63  
4.63  
4.38  
3.08  
3.08  
3.08  
2.93  
2.93  
2.93  
2.63  
2.63  
2.32  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
ADM825LYRJZ-R7  
ADM825MYRJ-R7  
ADM825TYKSZ-R7  
ADM825TYRJ-R7  
ADM825TYRJZ-R7  
ADM825SYKSZ-R7  
ADM825SYRJ-R7  
ADM825SYRJZ-R7  
ADM825RYRJ-R7  
ADM825RYRJZ-R7  
ADM825ZYKSZ-R7  
M8H  
M8H  
1 Z = RoHS Compliant Part.  
©2004–2013 Analog Devices, Inc. All rights reserved. Trademarks and  
registered trademarks are the property of their respective owners.  
D04534-0-7/13(D)  
Rev. D | Page 12 of 12  
 
配单直通车
ADM823SYRJZ-R7产品参数
型号:ADM823SYRJZ-R7
是否无铅: 不含铅
是否Rohs认证: 符合
生命周期:Active
零件包装代码:SOIC
包装说明:LSSOP,
针数:5
Reach Compliance Code:unknown
风险等级:5.16
Is Samacsys:N
其他特性:RESET THRESHOLD VOLTAGE IS 2.93V
可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码:R-PDSO-G5
JESD-609代码:e3
长度:2.9 mm
湿度敏感等级:1
信道数量:1
功能数量:1
端子数量:5
最高工作温度:125 °C
最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP
封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260
座面最大高度:1.45 mm
最大供电电压 (Vsup):3.6 V
最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):3 V
表面贴装:YES
温度等级:AUTOMOTIVE
端子面层:MATTE TIN
端子形式:GULL WING
端子节距:0.95 mm
端子位置:DUAL
处于峰值回流温度下的最长时间:40
宽度:1.6 mm
Base Number Matches:1
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