UTCLAG668

UTC LAG668 LINEAR INTEGRATED CIRCUIT RADIO AND CASSETTE RECORDER CIRCUIT DESCRIPTION The UTC LAG668 is a monolithic integrated circuit, designed for portable radio cassette. FEATURES *1-Chip IC for headphone stereo SOP-28 BLOCK DIAGRAM 27 26 25 24 23 22 21 19 20 18 14 17 16 15 13 Power Amp Pre Amp Attenuator Motor Control 1/2 Vcc Bias Control 1/2 Vcc V/I Power Amp Pre Amp Attenuator Power Amp 1 2 3 28 4 5 6 7 8 9 11 10 12 UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-012,A UTC LAG668 PIN CONFIGURATION VBPRE 1IN+ 1ININFPRF IOUTPRE ATT1 CONVOL VREF 1OUTP GNDP VBP GNDMD VCON MOON LINEAR INTEGRATED CIRCUIT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 GNDPRE 2IN+ 2IN2NFPRE 2OUTPRE ATT2 PREOFF VCCPRE VCC 2OUTP MOOFF VCCMO CONT CONS PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SYMBOL VBPRE 1 IN+ 1 IN 1 NFPRE 1 OUTPRE ATT 1 CONVOL VREF 1 OUTP GNDP VBP GNDMD VCON MOON DESCRIPTION Pre Amp Bias Voltage Channel 1 “ +” Input Channel 1 “ -” Input Feedback Attenuator 1 1 1 Pre Amp Output Volume Control Reference Voltage Power Amp Output Power GND Power Amp Bias Voltage Motor GND Motor Control Voltage Motor Forced Start 1 PIN NO. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SYMBOL CONS CONT VCCMO MOOFF 2 OUTP VCC VCCPRE PREOFF ATT 2 2 OUTPRE 2 NFPRE 2 IN2 IN+ GNDPRE DESCRIPTION Speed Control Torqul Control Motor Power Control Motor Forced Stop Power Amp Output Supply Voltage Supply Voltage Pre Amp Off Attenuator Feedback 2 2 2 Pre...