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What is AD8214?

This electronic component, produced by the manufacturer "Analog Devices", performs the same function as "High Voltage Current Shunt Comparator".


AD8214 Datasheet PDF - Analog Devices

Part Number AD8214
Description High Voltage Current Shunt Comparator
Manufacturers Analog Devices 
Logo Analog Devices Logo 


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Data Sheet
FEATURES
Input-to-output response: <100 ns
High input common-mode voltage range
Operating: 5 V to 65 V
Survival: 0 V to 68 V
Current output
Hysteresis: 10 mV
Integrated 2.4 V regulator
Wide operating temperature range: –40°C to +125°C
8-lead MSOP package
Qualified for automotive applications
APPLICATIONS
Overcurrent protection
Motor controls
Transmission controls
Diesel injection controls
DC-to-DC converters
Power supplies
Batteries
Fast Response, High Voltage
Current Shunt Comparator
AD8214
FUNCTIONAL BLOCK DIAGRAM
VS 1
+IN 2
–IN 8
5 OUT
2.4V
REGULATOR
VREG 3
Figure 1.
6
GND
GENERAL DESCRIPTION
The AD8214 is a fast response, high common-mode voltage,
current shunt comparator. The device operates on the high side
rail of any DC current sensing application, provided the voltage
is between 5 V and 65 V. Internally, the AD8214 features a fast
comparator that is optimized for high side operation. An internal
Zener regulator powers the circuit with respect to the high side
DC rail. In addition, user access to this 2.4V regulator, allows
for setting a comparator threshold voltage via external resistors.
The AD8214 will compare the voltage across the shunt resistor
to this user-selected threshold, and the AD8214 output will change
states from low to high, indicating the current across the shunt
has crossed the threshold level.
The input to output response time of the AD8214 is typically
less than 100 ns. This makes the device optimal for overcurrent
protection in applications such as motor and solenoid control.
Built-in comparator hysteresis means that once the current
across the shunt falls back to a normal limit, the AD8214 output
will change states to its original level.
The AD8214 is available in an 8-lead MSOP package. The
operating temperature range is −40°C to +125°C, and the device
is fully qualified for automotive applications.
Rev. A
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
www.analog.com
Fax: 781.461.3113 ©2006–2012 Analog Devices, Inc. All rights reserved.

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AD8214 equivalent
AD8214
ABSOLUTE MAXIMUM RATINGS
TA = –40°C to +125°C
Table 2.
Parameter
Rating
Supply Voltage
65 V
Continuous Input Voltage
68 V
Differential Input Voltage
500 mV
Reverse Supply Voltage
0.3 V
Operating Temperature Range
−40°C to +125°C
Storage Temperature Range
−65°C to +150°C
Output Short-Circuit Duration
Indefinite
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Data Sheet
Rev. A | Page 4 of 16


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