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FD2157H डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Smart motor driver - Feeling Technology

भाग संख्या FD2157H
समारोह Smart motor driver
मैन्युफैक्चरर्स Feeling Technology 
लोगो Feeling Technology लोगो 
पूर्व दर्शन
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FD2157H pdf
FEELING
TECHNOLOGY
Pin Connection
FD2157H
Marking Distinguish
2157H
YMV-XX
12 34
2157H
YMV- XX
Lot Number
Mass Production Version
Half month(ex :A,B ~ X)
Year (ex:2008 8)
Figure.2
Figure.3
Pin Descriptions
Name
I/O FD2157H
Description
VDD
P1
Positive Power Supply
NO O 2
Driver Output 1
SO O 3
Driver Output 2
VSS G 4
Ground
Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground
Functional Descriptions
Refer to the block diagram (Figure.1), FD2157H is composed of the following building blocks:
Bias Generator
The bias generator provides precise, temperature- and process-insensitive bias references for the analog blocks.
These references guarantee proper operation of the IC under all conditions specified in this specification.
Oscillator
The built-in oscillator provides the clock signal for the digital control logic.
Power On Reset
Used to detect the power-up ramp and reset the digital circuits to achieve correct operation as soon as the power is
ready.
Chopper Amplifier
To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design. Use of this
structure dynamically removes both the offset and flicker noise at the same time.
Digital Control Logic
Hall sensor part – generates magnetic pole signals from the Hall-effect sensor.
Driver part – generates switching signals to the open drain MOS driver.
Timer part – generates an interval of time when rotor locked event is occurred.
Rev1.2 Jul. 06, 2009
P.2

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भाग संख्याविवरणविनिर्माण
FD2157HSmart motor driverFeeling Technology
Feeling Technology


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