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ADM9690ARN-REEL

更新时间： 2024-01-20 16:26:21

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
6页	78K
描述
IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, SOIC-8, Power Management Circuit

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ADM9690ARN-REEL 技术参数

是否无铅：	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：	SOP,	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.12
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-G8	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
信道数量：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.75 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	4.3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	3.9 mm	Base Number Matches：	1

ADM9690ARN-REEL 数据手册

Power Supply and Watchdog Timer

Monitoring Circuit

ADM9690

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Precision Voltage Monitor (4.31 V)

Watchdog Timeout Monitor

Selectable Watchdog Timeout—0.75 ms, 1.5 ms,

12.5 ms, 25 ms

MON

ADM9690

Two RESET Outputs

4.31V

APPLICATIONS

Microprocessor Systems

Computers

Printers

Controllers

RESET(1)

OSC SEL1

OSC SEL2

TIMER

WATCHDOG

TIMEBASE

RESET(2)

TIMER

RESET(2)

Intelligent Instruments

WATCHDOG

TRANSITION

DETECTOR

WATCHDOG

INPUT (WDI)

GND

GENERAL DESCRIPTION

The watchdog timer monitoring circuit is designed to monitor

the activity on the WDI input. This input is normally connected

to an output line on the µP. Its function is to check that the

microprocessor has not stalled in an infinite loop. If there is a

period of inactivity for the watchdog timeout period, both reset

outputs are activated. As above, RESET(1) remains low for

50 ms while RESET(2) remains low for an additional 10 ms.

The watchdog timer is restarted when RESET(1) goes inactive.

The actual watchdog timeout period is adjustable using two

select inputs SEL1 and SEL2.

The ADM9690 contains a voltage monitoring comparator and a

watchdog timer monitor. It is designed to monitor the 5 V

power supply to a microprocessor and the microprocessor opera-

tion via a watchdog function.

The voltage monitoring comparator monitors the voltage on

_MON. If it drops outside tolerance, as will happen during a

power-fail, two reset signals are generated. Both reset signals go

active (low) simultaneously. They will remain active while

V_MONis below the threshold, and for 50 ms (RESET(1)) or

60 ms (RESET(2)) after V_MONclimbs above the reset thresh-

old. RESET(1) is intended to provide a power-on reset signal

for the µP while RESET(2) is used to hold additional circuitry

in a reset state until the µP has regained control following a

power-up. The voltage monitoring circuitry remains operational

with V_CCas low as 2 V.

The ADM9690 is available in an 8-lead SOIC package. It is

specified over the industrial temperature range.

REV. A

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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