Datasheet > ADM809-5LART-REEL7

ADM809-5LART-REEL7

更新时间： 2024-09-15 19:46:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
8页	185K
描述
Microprocessor Supervisory Circuit in 3-Lead SOT-23 & SC70, Active-Low Push-Pull Output

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Microprocessor

Supervisory Circuit

ADM809-5L/ADM809-5S

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Specified over temperature

ADM809-5L/

ADM809-5S

Low power consumption: 17 μA

Precision voltage monitor: 3 V, 5 V options

Reset assertion down to 1 V V_CC

30 ms minimum power-on reset

Logic low RESET output

RESET

GENERATOR

RESET

55ms

REF

Available in SOT-23 and SC70 packages

GND

Figure 1.

APPLICATIONS

Microprocessor systems

Computers

Controllers

Intelligent instruments

Automotive systems

GENERAL DESCRIPTION

TYPICAL OPERATING CIRCUIT

The supervisory circuit of the ADM809-5L/ADM809-5S monitors

the power supply voltage in microprocessor systems. It provides

a reset output during power-up, power-down, and brownout

conditions. On power-up, an internal timer holds reset asserted

for 55 ms. This holds the microprocessor in a reset state until

MICROPROCESSOR

SYSTEM

ADM809-5L/

ADM809-5S

RESET INPUT

RESET

conditions have stabilized. The

with V_CCas low as 1 V. The ADM809-5L/ADM809-5S provide

RESET

output remains operational

GND

an active low reset signal (

The reset comparator features built-in glitch immunity, making

it immune to fast transients on V_CC

Figure 2.

The ADM809-5L/ADM809-5S consume only 17 μA, making

them suitable for low power, portable equipment.

Rev. B

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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