ADM707ARZ

更新时间： 2024-11-18 11:52:47

品牌	Logo	应用领域
亚德诺 - ADI		电源电路电源管理电路微处理器光电二极管监控输入元件
页数	文件大小	规格书
12页	333K
描述
Low Cost Microprocessor Supervisory Circuits

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ADM707ARZ 数据手册

Low Cost Microprocessor

Supervisory Circuits

ADM705/ADM706/ADM707/ADM708

FEATURES

FUNCTIONAL BLOCK DIAGRAMS

Guaranteed RESET valid with V_CC= 1 V

190 μA quiescent current

WATCHDOG

TRANSITION

DETECTOR

WATCHDOG

INPUT (WDI)

WATCHDOG

TIMER

WATCHDOG

OUTPUT (WDO)

Precision supply voltage monitor

4.65 V (ADM705/ADM707)

RESET AND

WATCHDOG

TIMEBASE

4.40 V (ADM706/ADM708)

250μA

200 ms reset pulse width

RESET

Debounced TTL/CMOS manual reset input (MR)

Independent watchdog timer (ADM705/ADM706)

1.60 sec timeout (ADM705/ADM706)

Active high reset output (ADM707/ADM708)

Voltage monitor for power-fail or low battery warning

Superior upgrade for MAX705 to MAX708

RESET

GENERATOR

4.65V*

ADM705/

ADM706

POWER-FAIL

INPUT (PFI)

POWER-FAIL

OUTPUT (PFO)

1.25V

VOLTAGE REFERENCE = 4.65V (ADM705), 4.40V (ADM706)

Figure 1. ADM705/ADM706

APPLICATIONS

Microprocessor systems

Computers

Controllers

Intelligent instruments

Critical microprocessor supply monitoring

250μA

RESET

GENERATOR

4.65V*

1.25V

ADM707/

ADM708

POWER-FAIL

INPUT (PFI)

POWER-FAIL

OUTPUT (PFO)

* VOLTAGE REFERENCE = 4.65V (ADM707), 4.40V (ADM708)

Figure 2. ADM707/ADM708

GENERAL DESCRIPTION

The ADM705/ADM706/ADM707/ADM708 microprocessor

supervisory circuits are suitable for monitoring 5 V power

supplies/batteries and can also monitor microprocessor activity.

The ADM705 and ADM706 are identical except for the reset

threshold monitor levels, which are 4.65 V and 4.40 V, respectively.

The ADM707 and ADM708 provide a similar functionality to

the ADM705 and ADM706 and only differ in that a watchdog

timer function is not available. Instead, an active high reset

output (RESET) is available as well as the active low reset output

The ADM705/ADM706 provide power-supply monitoring

circuitry that generate a reset output during power-up, power-

down, and brownout conditions. The reset output remains

operational with V_CCas low as 1 V. Independent watchdog

monitoring circuitry is also provided. This is activated if the

watchdog input has not been toggled within 1.60 seconds.

RESET

(

). The ADM707 and ADM708 are identical except for

the reset threshold monitor levels, which are 4.65 V and 4.40 V,

respectively.

In addition, there is a 1.25 V threshold detector to warn of

power-failures, to detect low battery conditions, or to monitor an

additional power supply. An active low, debounced manual reset

All parts are available in narrow 8-lead PDIP and 8-lead SOIC

packages.

input (

) is also included.

Rev. G

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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中文翻译

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ADM707ARZ 替代型号

型号	品牌	替代类型	描述	数据表
ADM707AR	ADI	类似代替	Low Cost uP Supervisory Circuits

与ADM707ARZ相关器件

型号	品牌	获取价格	描述	数据表
ADM708	ADI	获取价格	Low Cost uP Supervisory Circuits
ADM708_15	ADI	获取价格	Low Cost Microprocessor Supervisory Circuits
ADM708AN	ADI	获取价格	Low Cost uP Supervisory Circuits
ADM708ANZ	ADI	获取价格	3 V, Voltage Monitoring Microprocessor Supervisory Circuit
ADM708AR	ADI	获取价格	Low Cost uP Supervisory Circuits
ADM708ARM	ADI	获取价格	Low Cost uP Supervisory Circuits
ADM708ARM-REEL	ADI	获取价格	IC 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, M0-187AA, MSOP-8, Power Management Circuit
ADM708ARZ	ADI	获取价格	Low Cost Microprocessor Supervisory Circuits
ADM708ARZ-REEL	ADI	获取价格	3 V, Voltage Monitoring Microprocessor Supervisory Circuits
ADM708R	ADI	获取价格	+3 V, Voltage Monitoring uP Supervisory Circuits

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