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ADM695AR-REEL

更新时间： 2024-12-01 13:05:27

品牌	Logo	应用领域
亚德诺 - ADI		微处理器监控
页数	文件大小	规格书
16页	199K
描述
Microprocessor Supervisor with Backup Battery Switchover, Adjustable Reset Period

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ADM695AR-REEL 数据手册

Microprocessor

Supervisory Circuits

ADM690–ADM695

FEATURES

FUNCTIO NAL BLO CK D IAGRAMS

Superior Upgrade for MAX690–MAX695

Specified Over Tem perature

V_BATT

Low Pow er Consum ption (5 m W)

Precision Voltage Monitor

Reset Assertion Dow n to 1 V V_CC

Low Sw itch On-Resistance 1.5 ⍀ Norm al,

20 ⍀ in Backup

V_OUT

V_CC

RESET

4.65V¹

GENERATOR²

RESET

High Current Drive (100 m A)

Watchdog Tim er—100 m s, 1.6 s, or Adjustable

600 nA Standby Current

Autom atic Battery Backup Pow er Sw itching

Extrem ely Fast Gating of Chip Enable Signals (5 ns)

Voltage Monitor for Pow er Fail

WATCHDOG

TRANSITION DETECTOR

(1.6s)

WATCHDOG

INPUT (WDI)

ADM690

ADM692

ADM694

POWER FAIL

INPUT (PFI)

POWER FAIL

OUTPUT (PFO)

APPLICATIONS

1.3V

Microprocessor System s

Com puters

¹VOLTAGE DETECTOR = 4.65V (ADM690, ADM694)

4.40V (ADM692)

Controllers

Intelligent Instrum ents

Autom otive System s

²RESET PULSE WIDTH = 50ms (ADM690, ADM692)

200ms (ADM694)

BATT ON

V_BATT

GENERAL D ESCRIP TIO N

T he ADM690–ADM695 family of supervisory circuits offers

complete single chip solutions for power supply monitoring and

battery control functions in microprocessor systems. T hese

functions include µP reset, backup battery switchover, watchdog

timer, CMOS RAM write protection, and power failure warn-

ing. T he complete family provides a variety of configurations to

satisfy most microprocessor system requirements.

V_OUT

ADM691

ADM693

ADM695

V_CC

CE_IN

CE_OUT

LOW LINE

4.65V¹

RESET

T he ADM690, ADM692 and ADM694 are available in 8-pin

DIP packages and provide:

RESET &

RESET

OSC IN

WATCHDOG

GENERATOR

OSC SEL

TIMEBASE

1. Power-on reset output during power-up, power-down and

brownout conditions. T he RESET output remains opera-

tional with V_CCas low as 1 V.

WATCHDOG

TIMER

WATCHDOG

INPUT (WDI)

WATCHDOG

OUTPUT (WDO)

TRANSITION DETECTOR

2. Battery backup switching for CMOS RAM, CMOS

microprocessor or other low power logic.

POWER FAIL

INPUT (PFI)

POWER FAIL

OUTPUT (PFO)

3. A reset pulse if the optional watchdog timer has not been

toggled within a specified time.

1.3V

¹VOLTAGE DETECTOR = 4.65V (ADM691, ADM695)

4.40V (ADM693)

4. A 1.3 V threshold detector for power fail warning, low battery

detection, or to monitor a power supply other than +5 V.

T he ADM690–ADM695 family is fabricated using an advanced

epitaxial CMOS process combining low power consumption

(5 mW), extremely fast Chip Enable gating (5 ns) and high reli-

ability. RESET assertion is guaranteed with V_CCas low as 1 V.

In addition, the power switching circuitry is designed for mini-

mal voltage drop thereby permitting increased output current

drive of up to 100 mA without the need for an external pass

transistor.

T he ADM691, ADM693 and ADM695 are available in 16-pin

DIP and small outline packages and provide three additional

functions.

1. Write protection of CMOS RAM or EEPROM.

2. Adjustable reset and watchdog timeout periods.

3. Separate watchdog timeout, backup battery switchover, and

low V_CCstatus outputs.

REV. A

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/ 329-4700

Fax: 617/ 326-8703

12 3 4 5 6 7...16

中文翻译

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ADM695AR-REEL 替代型号

型号	品牌	替代类型	描述	数据表
ADM695ARZ-REEL	ADI	完全替代	Microprocessor Supervisor with Backup Battery Switchover, Adjustable Reset Period
ADM695AR	ADI	完全替代	Microprocessor Supervisory Circuits
ADM695AQ	ADI	完全替代	Microprocessor Supervisory Circuits

与ADM695AR-REEL相关器件

型号	品牌	获取价格	描述	数据表
ADM695ARZ	ADI	获取价格	Microprocessor Supervisory Circuits
ADM695ARZ-REEL	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16, SO-16
ADM695ARZ-REEL	ADI	获取价格	Microprocessor Supervisor with Backup Battery Switchover, Adjustable Reset Period
ADM695SQ	ADI	获取价格	Microprocessor Supervisory Circuits
ADM696	ADI	获取价格	Microprocessor Supervisory Circuits
ADM696_15	ADI	获取价格	Microprocessor Supervisory Circuits
ADM696AN	ADI	获取价格	Microprocessor Supervisory Circuits
ADM696ANZ	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16, PLASTIC, DIP-16
ADM696ANZ	ADI	获取价格	暂无描述
ADM696AQ	ADI	获取价格	Microprocessor Supervisory Circuits

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