How to connect cdrom motor driver to arduino?

Question

Do it yourself

there is a motor from a sidirom with an AN8473SA control mikruha, a link to the datasheet pdf.datasheetarchive.com/datasheetsmain/Datasheets... , so how to connect this miracle to arduino? Is it enough just to apply power and PWM to 30 pins?

Answer 1

30 pin is not a PWM control signal, but a selection of the PWM frequency (0=80 kHz, 1=40 kHz). Short this pin to ground or power positive.
And the control input, as I understand it, is EC / ECR. And it is analog and differential. When V _EC > V _ECR , it turns in one direction, when V _EC < V _ECR - in the other direction. The more voltage between EC and ECR, the faster it turns with more torque.
To connect this economy to the Arduino, you need a DAC. I think a simple R-2R circuit will do. If you do not need smooth speed control, it is enough to simply apply voltage to the EC from any digital output through a divider.
The ECR input is connected to ground if no reverse is needed. Or 2.5 V is supplied to it through a divider, if a reverse is still needed.