Datasheet > ADM8611N263ACBZ-R7

ADM8611N263ACBZ-R7

更新时间： 2024-09-24 15:27:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	491K
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Ultralow Power Voltage Supervisor with Manual Reset

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Ultralow Power Supervisory ICs with

Watchdog Timer and Manual Reset

Data Sheet

ADM8611/ADM8612/ADM8613/ADM8614/ADM8615

FEATURES

FUNCTIONAL BLOCK DIAGRAMS

VCC

Ultralow power consumption with I_CC= 92 nA (typical)

Continuous monitoring with no blank time

Pretrimmed voltage monitoring threshold options

10 options from 2 V to 4.63 V for the ADM8611

20 options from 0.5 V to 1.9 V for the ADM8612/ADM8615

5 options from 2.32 V to 4.63 V for the ADM8613/ADM8614

1.3% threshold accuracy over full temperature range

Manual reset input

ADM8612

RESET

VIN

RESET

GENERATOR

DEBOUNCE

(ADM8611/ADM8612/ADM8613/ADM8615)

200 ms (typical) reset timeout

GND

Figure 1. ADM8612 Functional Block Diagram

Low voltage input monitoring down to 0.5 V (ADM8612/

ADM8615)

Watchdog timer (ADM8613/ADM8614/ADM8615)

Watchdog function disable input (ADM8613/ADM8614 only)

Watchdog timeout extension input (ADM8614 only)

Active low, open-drain RESET output

VCC

ADM8614

RESET

GENERATOR

WATCHDOG

DETECTOR

Power supply glitch immunity

WDI

Available in a 1.46 mm × 0.96 mm WLCSP

Operational temperature range: −40°C to +85°C

GND

WD_DIS

WDT_SEL

APPLICATIONS

Figure 2. ADM8614 Functional Block Diagram

Portable/battery-operated equipment

Microprocessor systems

Energy metering

Energy harvesting

GENERAL DESCRIPTION

The ADM8611/ADM8612/ADM8613/ADM8614/ADM8615

are voltage supervisory circuits that monitor power supply voltage

levels and code execution integrity in microprocessor-based

systems. Apart from providing power-on reset signals, an on-

chip watchdog timer can reset the microprocessor if it fails to

strobe within a preset timeout period. A reset signal can also be

asserted by an external push-button through a manual reset input.

both the ADM8613 and ADM8614. A separate supply input

allows the ADM8612 and ADM8615 to monitor 20 different

low voltage levels from 0.5 V to 1.9 V. Not all device options are

available as standard models. See the Ordering Guide for details.

The ADM8611, ADM8612, ADM8613, and ADM8615 can

reset on demand through the manual reset input. The watchdog

function on the ADM8613, ADM8614, and ADM8615 monitors

the heartbeat of the microprocessor through the WDI pin. The

ADM8613 and ADM8614 have a watchdog disable input, which

allows the user to disable the watchdog function, if required. The

ADM8614 also has a watchdog timeout extension input, allowing

the watchdog timeout to be extended from 1.6 sec to 100 sec.

The ultralow power consumption of these devices makes them

suitable for power efficiency sensitive systems, such as battery-

powered portable devices and energy meters.

The features of each member of the device family are shown in

Table 9. Each device subdivides into submodels with differences

in factory preset voltage monitoring threshold options. In the

range of 2 V to 4.63 V, 10 options are available for the ADM8611.

In the range of 2.32 V to 4.63 V, five options are available for

The ADM8611/ADM8612/ADM8613/ADM8614/ADM8615

are available in a 6-ball, 1.46 mm × 0.96 mm WLCSP. These

devices are specified over the temperature range of −40°C to +85°C.

Rev. F

Document Feedback

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

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

Technical Support

www.analog.com

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