BD6965NUX_12 Datasheet, PDF (6/16 Pages) Rohm – 5V Single-phase Full wave

BD6965NUX
3) Hall input setting
Hall input voltage range is shown in operating conditions.
Datasheet
Vcc
Vcc-1.1V
GND
Fig.12 Hall input voltage range
Adjust the value of hall element bias resistor R1 in Fig.13 so that the input voltage of a hall amplifier is input in "hall
input voltage range" including signal amplitude.
○Reducing the noise of hall signal
Hall element may be affected by Vcc noise depending on the wiring pattern of board. In this case, place a
capacitor like C1 in Fig.13. In addition, when wiring from the hall element output to IC hall input is long, noise may
be loaded on wiring. In this case, place a capacitor like C2 in Fig.13.
H-
H+
C2
R1
RH
Hall element
Vcc
Hall bias current
C1
＝ Vcc / (R1+RH)
Fig.13 Application near of hall signal
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TSZ22111・15・001
6/12
TSZ02201-0H1H0B100130-1-2
6.Jul.2012 Rev.001