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Analog Devices - Ultralow Power Voltage Detector

Numéro de référence ADM8642
Description Ultralow Power Voltage Detector
Fabricant Analog Devices 
Logo Analog Devices 





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ADM8642 fiche technique
Data Sheet
FEATURES
Ultralow power consumption with ICC = 92 nA (typical)
Precision, low voltage monitoring
Pretrimmed voltage monitoring threshold options
10 options from 2 V to 4.63 V for the ADM8641
20 options from 0.5 V to 1.9 V for the ADM8642
±1.3% threshold accuracy over full temperature range
Output disable input
23 µs to 26 µs typical propagation delay
Open-drain type output
Power supply glitch immunity
Available in a 1.46 mm × 0.96 mm WLCSP
Operational temperature range: −40°C to +85°C
APPLICATIONS
Portable/battery-operated equipment
Microprocessor systems
Energy metering
Energy harvesting
GENERAL DESCRIPTION
The ADM8641 and ADM8642 are simple voltage detectors
suitable for use in general-purpose applications. 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 factory preset detection thresholds from 0.5 V to 4.63 V
with ±1.2% accuracy over the full temperature range enable the
devices to monitor the node of interest accurately with direct
contact. The DIS input lets the user hold the output low
regardless of the state of the input.
Ultralow Power Voltage Detector
ADM8641/ADM8642
FUNCTIONAL BLOCK DIAGRAMS
VCC
ADM8641
DIS
VTH
OUT
GND
Figure 1. ADM8641 Functional Block Diagram
VCC
ADM8642
DIS
VIN
VTH
OUT
GND
Figure 2. ADM8642 Functional Block Diagram
The ADM8641 monitors the voltage using the VCC pin. The
separate supply pin on the ADM8642 allows it to have a lower
detection threshold down to 0.5 V.
The ADM8641 and ADM8642 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. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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