HA13631T Datasheet, PDF (12/20 Pages) Hitachi Semiconductor – CD-ROM Combo Driver

HA13631T
4. The PWM carrier frequency fpwm and the amplitude Apwm are determined by the following
equation.
fpwm =
Vrt
8 Ct1 Rt (Vct1h − Vct1l)
Apwm = ^{4 Ct1} (Vct1h − Vct1l)
Ct2
However, Ct2 = 4 Ct1
5. As 5 kΩ appears as an internal resistance at TRYIN (pin 6), caution is required when marking
the gain setting.
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