S1A0136A01

DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01 INTRODUCTION The S1A0136A01 is a monolithic intergrated circuit designed for use in low voltage and low power applications. It has functions including dual audio pre-power amplifier, electronic volume controller and DC motor speed controller in a single chip. It is suitable for portable tape recorders headphone cassette tape recorders or radios that are battery-operated. 28−SDIP FEATURES Low current consumption in an operating voltage range Operating supply voltage range: Vcc = 2.1V − 5V Only a few components in composing a headphone cassette tape recorder Dual audio pre-power amplifier, electronic volume controller and DC motor speed controller in a single chip Reduced input and output coupling capacitors because of 1/2 Vcc AMP adoption on chip as AC GND 28−SOP ORDERING INFORMATION Device S1A0136A01-A0B0 S1A0136A01-S0B0 Package 28−SDIP 28−SOP Operating Temperature −20°C — + 65°C 1 S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER BLOCK DIAGRAM PRE GND PRE COMPEN IN2 -SATION NF2 PRE OUT2 ATT IN2 PRE OFF PRE VCC VCC PWR MOTOR MOTOR TORQUE SPEED CNT OUT2 CNT VCC ADJ 28 27 26 − 25 24 23 22 21 20 19 18 17 16 15 PRE 2 PWR 2 + VOLUME CONTROL BIAS CIRCUIT MOTOR SPEED CONTROL BIAS CIRCUIT + PRE 1 PWR 2 − 1 VCC1 2 3 4 5 PRE OUT1 6 7 8 9 10 11 12 13 14 PRE COMNF1 IN1 PENSATION ATT VOLUME VOL IN1 REF PWR PWR 1/2 VCC2 MOTOR MOTOR MOTOR OUT1 GND GND CNT ABSOLUTE MAXI...