AM7232

Motor Driver ICs

http://www.amtek-semi.com

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Specifications subject to change without notice

- 11 -

Input signal to hall amplifier is amplified to produce an output signal.

When the hall element output signal is small, the gradient of switching of output waveform is gentle;

When it is large on the contrary, the gradient of switching of output waveform is steep. Gain of 500

times (Typ.) is provided between input and output, therefore enter an appropriate hall element

output to IC where output waveform swings sufficiently.

Fig.8 Relation between hall element output amplitude and output waveform

Hall input voltage range is shown in operating conditions.

Fig.9 Hall input voltage range

Adjust the value of hall element bias resistor R1 in Fig.10 so that the input voltage of a hall

amplifier is input in "hall input voltage range" including signal amplitude. Input out of the hall input

voltage range may cause unexpected operation of output.