Datasheet > ADM13305-4ARZ1

ADM13305-4ARZ1

更新时间： 2024-11-07 04:19:15

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
12页	315K
描述
Dual Processor Supervisors with Watchdog

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ADM13305-4ARZ1 数据手册

Dual Processor

Supervisors with Watchdog

ADM13305

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Dual supervisory circuits

ADM13305-18

ADM13305-25

ADM13305-33

Supply voltage range of 2.7 V to 5.5 V

Pretrimmed threshold options: 1.8 V, 2.5 V, 3.3 V, and 5 V

Adjustable 0.6 V voltage reference

Maximum supply current of 40 μA

140 ms (minimum) reset timeout

14kΩ

RESET

SENSE1

RESET

LOGIC + TIMER

Watchdog timer with 1.6 sec (typical) timeout

RESET valid from V_DD≥ 1.1 V

SENSE2

GND

RESET

Push-pull RESET and

outputs

8-lead, narrow body SOIC package

Temperature range: −40°C to +85°C

1.25V

OSCILLATOR

APPLICATIONS

Supervising DSPs/microcontrollers

Industrial and portable equipment

Wireless systems

TRANSITION

DETECTION

WATCHDOG

LOGIC + TIMER

WDI

Figure 1.

Notebook/desktop computers

GENERAL DESCRIPTION

ADM13305-4

ADM13305-5

The ADM13305 is a dual voltage supervisor designed to

monitor two supplies and provide a reset signal to DSP and

microprocessor-based systems.

14kΩ

SENSE1

GND

RESET

There are five models available, all of which feature a combination

of internally pretrimmed undervoltage threshold options for

monitoring 1.8 V, 2.5 V, 3.3 V, and 5 V supplies. There is also

an adjustable input option with an undervoltage threshold voltage

of 0.6 V.

RESET

LOGIC + TIMER

SENSE2

The ADM13305-18, ADM13305-25, and ADM13305-33 models

have two internally fixed thresholds. The ADM13305-4 and

ADM13305-5 offer one internally fixed threshold and one

externally programmable threshold via a resistor string. See

the Ordering Guide for a list of all available options.

0.6V

OSCILLATOR

TRANSITION

DETECTION

WATCHDOG

WDI

LOGIC + TIMER

RESET

During power-up,

exceeds 1.1 V. The device then monitors the SENSEv input pins

RESET

is asserted when the supply voltage

Figure 2. .

and holds the

output low as long as either of the SENSEv

inputs remains below the rising threshold voltage, V_IT+

Once the supplies monitored at the SENSEv inputs rise above

their associated thresholds, the reset signal remains low for

the reset timeout period before deasserting. Subsequently, if a

voltage monitored by the SENSEv pins falls below its associ-

As well as providing power-on reset signals, an on-chip watchdog

timer can reset the microprocessor if it fails to strobe within the

preset timeout period. A reset signal can also be asserted by an

external push button through the manual reset input pin.

RESET

ated falling threshold, V_IT−, the

ADM13305 features both an active high RESET and an active

RESET

output asserts. The

The ADM13305 is available in an 8-lead, narrow body SOIC

package. The device operates over the extended industrial

temperature range of −40°C to +85°C.

low

output.

Rev. 0

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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与ADM13305-4ARZ1相关器件

型号	品牌	获取价格	描述	数据表
ADM13305-4ARZ-RL71	ADI	获取价格	Dual Processor Supervisors with Watchdog
ADM13305-5ARZ	ROCHESTER	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
ADM13305-5ARZ1	ADI	获取价格	Dual Processor Supervisors with Watchdog
ADM13305-5ARZRL7	ADI	获取价格	Dual Processor Supervisors with Watchdog
ADM13305-5ARZ-RL71	ADI	获取价格	Dual Processor Supervisors with Watchdog
ADM13307	ADI	获取价格	Triple Processor Supervisors
ADM13307-18ARZ	ADI	获取价格	Triple Processor Supervisors
ADM13307-18ARZ-RL7	ADI	获取价格	Triple Processor Supervisors
ADM13307-25ARZ	ADI	获取价格	Triple Processor Supervisors
ADM13307-25ARZ	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8

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