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Analog Devices Semiconductor Electronic Components Datasheet

ADM2914 Datasheet

Quad UV/OV Positive/Negative Voltage Supervisor

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ADM2914 pdf
Data Sheet
FEATURES
Quad UV/OV positive/negative supervisor
Supervises up to 2 negative rails
Adjustable UV and OV input thresholds
High threshold accuracy over temperature: ±1.5%
1 V buffered reference output
Open-drain UV and OV reset outputs
Adjustable reset timeout with disable option
Outputs guaranteed down to VCC of 1 V
Glitch immunity
62 µA supply current
16-lead QSOP package
APPLICATIONS
Server supply monitoring
FPGA/DSP core and I/O voltage monitoring
Telecommunications equipment
Medical equipment
GENERAL DESCRIPTION
The ADM2914 is a quad voltage supervisory IC ideally suited
for monitoring multiple rails in a wide range of applications.
Each monitored rail has two dedicated input pins, VHx and VLx,
which allow each rail to be monitored for both overvoltage (OV)
and undervoltage (UV) conditions. A common active low
undervoltage (UV) and overvoltage (OV) pin is shared by each
of the monitored voltage rails.
The ADM2914 includes a 1 V buffered reference output, REF,
that acts as an offset when monitoring a negative voltage. The
three-state SEL pin determines the polarity of the third and
fourth inputs, that is, it configures the device to monitor
positive or negative supplies.
The device incorporates an internal shunt regulator that enables
the device to be used in higher voltage systems. This feature
Quad UV/OV Positive/Negative
Voltage Supervisor
ADM2914
FUNCTIONAL BLOCK DIAGRAM
VCC TIMER
ADM2914
VH1
500mV
TIMER
VL1
VH2
500mV
UV
VL2
VH3
OUTPUT
LOGIC
500mV
VL3
VH4
500mV
VL4
MUX
SEL GND
Figure 1.
OV
LOGIC
REF
LATCH/DIS
REF
requires a resistor to be placed between the main supply rail and
the VCC pin to limit the current flow into the VCC pin to no
greater than 10 mA. The ADM2914 uses the internal shunt
regulator to regulate VCC if the supply line exceeds the absolute
maximum ratings.
The ADM2914 is available in two models. The ADM2914-1
offers a latching overvoltage output that can be cleared by
toggling the LATCH input pin. The ADM2914-2 has a disable
pin that can override and disable both the OV and UV output
signals.
The ADM2914 is available in a 16-lead QSOP package. The
device operates over the extended temperature range of −40°C
to +125°C.
Rev. E
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Technical Support
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Analog Devices Semiconductor Electronic Components Datasheet

ADM2914 Datasheet

Quad UV/OV Positive/Negative Voltage Supervisor

No Preview Available !

ADM2914 pdf
ADM2914* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
View a parametric search of comparable parts
Evaluation Kits
• ADM2914/ADM12914 Evaluation Board
Documentation
Data Sheet
• ADM2914-DSCC: Military Data Sheet
• ADM2914-EP: Enhanced Product Data Sheet
• ADM2914: Quad UV/OV Positive/Negative Voltage
Supervisor Data Sheet
User Guides
• UG-174: Evaluation Board User Guide for ADM2914 and
ADM12914
Reference Materials
Product Selection Guide
• Supervisory Devices Complementary Parts Guide for Altera
FPGAs
• Supervisory Devices Complementary Parts Guide for Xilinx
FPGAs
Design Resources
• ADM2914 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all ADM2914 EngineerZone Discussions
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Technical Support
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* This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to
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frequently modified.


Part Number ADM2914
Description Quad UV/OV Positive/Negative Voltage Supervisor
Maker Analog Devices
Total Page 17 Pages
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