Datasheet > AMS812

AMS812

更新时间： 2022-10-09 17:15:22

品牌	Logo	应用领域
奥地利微 - AMS		监控
页数	文件大小	规格书
8页	310K
描述
Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages

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AMS812 数据手册

AMS811/812

General Description

Features

The AMS811 / 812 are low-power microprocessor

(µP) supervisory circuits used to monitor power sup-

plies in µP and digital systems. They provide excellent

circuit reliability and low cost by eliminating external

components and adjustments when used with 5V-

powered or 3V-powered circuits. The AMS811 / 812

also provide a debounced manual reset input.

♦ Precision Monitoring of 3V, 3.3V, and 5V

Power-Supply Voltages

♦ 6µA Supply Current

♦ 140ms Min Power-On Reset Pulse Width;

RESET Output (AMS811), RESET Output (AMS812)

♦ Guaranteed Over Temperature

These devices perform a single function: They assert a

reset signal whenever the V

supply voltage falls

♦ Guaranteed RESET Valid to V

= 1V (AMS811)

below a preset threshold, keeping it asserted for at

♦ Power-Supply Transient Immunity

♦ No External Components

♦ 4-Pin SOT143 Package

least 140ms after V

has risen above the reset thresh-

old. The only difference between the two devices is that

the AMS811 has an active-low RESET output (which is

guaranteed to be in the correct state for V

down to

1V), while the AMS812 has an active-high RESET out-

_______________Ordering Information

put. The reset comparator is designed to ignore fast

PART*

AMS811_EUS-T

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

4 SOT143

transients on V . Reset thresholds are available for

operation with a variety of supply voltages.

AMS812_EUS-T

4 SOT143

Low supply current makes the AMS811 / 812 ideal

for use in portable equipment. The devices come in a

4-pin SOT143 package.

*This part offers a choice of five different reset threshold volt-

ages. Select the letter corresponding to the desired nominal

reset threshold voltage, and insert it into the blank to complete

the part number.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

________________________Applications

Computers

Controllers

RESET THRESHOLD

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

SUFFIX

VOLTAGE (V)

4.63

4.38

3.08

2.93

2.63

___________________Pin Configuration

___________Typical Operating Circuit

TOP VIEW

GND

AMS811

AMS812

AMS811

AMS812

μP

RESET

INPUT

RESET

(RESET)

(RESET) RESET

GND

SOT143

PUSHBUTTON

SWITCH

( ) ARE FOR AMS812

NOTE: SEE LAST PAGE FOR MARKING INFORMATION.

Advanced Monolithic Systems http://www.ams-semitech.com

12 3 4 5 6 7 8

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与AMS812相关器件

型号	品牌	描述	获取价格	数据表
AMS812-EUS-T	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格
AMS812L	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格
AMS812M	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格
AMS812R	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格
AMS812S	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格
AMS812T	AMS	Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages	获取价格