AMC5902DSF datasheet(9/14 Pages) ETC1

9 / 14 page

AMC DOC. #: AMC5902_B

AMC5902

March 2004

 2003, 2004 ADD Microtech Corp

www.addmtek.com

6CH Motor Driver for

CD-ROM, DVD-ROM

APPLICATION INFORMATION (continued)

Loading control

The loading output voltage is set internally to be 7.5 × (LDIN-VREF).

With LDIN is higher/ equal/ lower to VREF,the motor can be set to Forward/ Short brake/ Reverse functions..

Focus / tracking channel

The focus and tracking output voltage is set internally to be 7.5 × (FOIN-VREF).

With FOIN (TKIN) is higher/ equal/ lower to VREF, the motor can be set to Forward/ Short brake/ Reverse function.

Gain expression

Gain with the added resistor Av(V/V)

Loading (LO+

- LO-)

7.5x 47k/(R1+47k)

Focus (FO+

- FO-)

7.5x 47k/(R1+47k)

Tracking (TKO+

- TKO-)

7.5x 47k/(R1+47k)

Channel

VCC4

LDIN

LDO+

LDO-

Forward

Reverse

Load input

Focus

Channel

VCC5

FOIN

FO+

FO-

Forward

Reverse

Focus input

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