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AD8214ARMZ-RL 데이터시트(PDF) 1 Page - Analog Devices |
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1 / 16 page High Voltage Threshold Detector AD8214 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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 Analog Devices, Inc. All rights reserved. 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 APPLICATIONS Overcurrent protection Motor controls Transmission controls Diesel injection controls DC-to-DC converters Power supplies Batteries FUNCTIONAL BLOCK DIAGRAM 2.4V REGULATOR 1 3 6 5 8 2 VS +IN –IN OUT VREG GND Figure 1. GENERAL DESCRIPTION The AD8214 is a fast, high common-mode voltage threshold detector, which operates with a single supply of 5 V to 65 V. Internally the AD8214 features a fast comparator that is optimized for high side operation. It also includes a stable 2.4 V series regulator, which is referenced with respect to the supply voltage. The purpose of the regulator is to provide power to the internal electronics, and set an input comparison threshold below the supply voltage. The inputs of the AD8214 may be operated at, slightly above, or below the power supply. The differential voltage range between the inputs of the AD8214 is 500 mV. The device features a current output. This current is <100 nA when –IN > +IN and 1 mA when +IN > –IN. The input voltages are referenced to the supply voltage, as is the internal 2.4 V regulator. The input-to-output response time is typically <100 ns. As the output switches from low to high, a small hysteresis (10 mV) is activated to minimize the effects of noise in the system, and prevent any false state conditions. The AD8214 is available in an 8-lead MSOP package. The operating temperature range is –40°C to +125°C, making it ideal for industrial, consumer, and automotive applications. |
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