PT7954 Overview
Description
Pin NO 15 16 17 18 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 5 VINSL－ Operational amplifier input of sled drive 19 20 21 22 23 24 25 26 27 28 PGND 6 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 Power GND Sled drive output Sled drive output Focus drive output Focus drive output PVCC2 PreGND VINLD CTKerr2 CTKerr1 preGND Loading drive input Error-amplifier filter condenser Error-amplifier filter condenser Tracking drive input Bias input Standby end VINTK BIAS STBY Datasheet pdf.
