Datasheet Summary
PT7954:
Pin No
1 2 3 4 symbol
VINFC CFCerr1 CFCerr2 VINSL＋
Description
Pin NO
15 16 17 18
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Symbol
VOTK＋ VOTKVOLD＋ VOLD-
Description
Tracking drive output (+) Tracking drive output (-) Loader drive output(+) Loading drive output(-) Power GND Tracking driver feedback end
FOCUS DRIVE INPUT Error-amplifier filter condenser Error-amplifier filter condenser Operational amplifier input of sled drive
VINSL－
Operational amplifier input of sled drive
19 20 21 22 23 24 25 26 27 28
PGND
VOSL
Operational amplifier output of sled drive
VNFTK
7 8 9 10 11 12 13 14
VNFFC VCC PVCC1 PGND VOSL－ VOSL＋ VOFC－ VOFC＋
Focus drive Pre Vcc, Sled drive Vcc Loading drive output...