DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01 INTRODUCTION 28−SDIP 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. FEATURES 28−SOP • 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 ORDERING INFORMATION Device Package S1A0136A01-A0B0 28−SDIP S1A0136A01-S0B0 28−SOP Operating Temperature −20°C — + 65°C 1 S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER BLOCK DIAGRAM PRE GND 28 PRE COMPEN IN2 -SATION NF2 PRE OUT2 ATT IN2 PRE OFF PRE VCC VCC 27 24 23 22 21 20 26 25 PWR MOTOR MOTOR TORQUE SPEED CNT OUT2 CNT VCC ADJ 19 18 17 16 15 − PWR 2 PRE 2 + VOLUME CONTROL BIAS CIRCUIT MOTOR SPEED CONTROL BIAS CIRCUIT + PWR 2 PRE 1 − 1 VCC1 2 3 4 PRE COMNF1 IN1 PENSATION 5 PRE OUT1 6 7 8 ATT VOLUME VOL IN1 REF 9 10 11 12 13 14 PWR PWR 1/2 VCC2 MOTOR MOTOR MOTOR OUT1 GND GND CNT ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Characteristic Symbol Value Unit Supply Voltage VCC 7.5 V Power Dissipation PO 450 mW Operating Temperature TOPR −20 — +70 °C Storage Temperature TSTG − 40 — +125 °C 2 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01 ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 3V, unless otherwise specified) Characteristic Symbol Test Conditions Min. Typ. Max. Unit Quiescent Circuit Current ICCQ VCC = 3V, VI = 0, IM = 0 − 18 25 mA Min. Typ. Max. Unit PRE AMPLIFIER SECTION (VCC = 3V, f = 1kHz, RL1 = 10kΩ, unless otherwise specified) Characteristic Symbol Test Conditions Open Loop Voltage Gain GVO VO = −10dBm, RL = ∞ − 70 − dB Closed Loop Voltage Gain GVC1 VO = −10dBm 40 42 44 dB VO THD = 1% 0.45 0.6 − V Total Harmonic Distortion THD VO = 0.2V − 0.05 0.5 % Output Noise Voltage VNO1 Vi = 0, Rg = 2.2kΩ, BPF(30 − 20kHz) − 150 300 µV VO = 10dBm 18 22 − kΩ RG = 2.2kΩ, VO = −10dBm 30 − − dB VI = 100mV Pre OFF (pin 22) = VCC − − −50 dB Output Voltage Input Resistance RI Cross Talk Output Voltage In Pre OFF CT1 VO (OFF) POWER AMPLIFIER SECTION (Ta = 25°C, VCC = 3V, unless otherwise specified) Characteristic Symbol Test Conditions Min. Typ. Max. Unit Closed Loop Voltage Gain GVC2 PO = 5mW 26 28 30 dB Voltage Gain Difference ∆GV VCONT = Max − 0 3 dB Output Power 1 PO1 THD = 10%, RL = 32Ω 20 28 − mW Output Power 2 PO2 THD = 10%, RL = 16Ω 30 − − mW Total Harmonic Distortion THD2 PO = 5mW − 0.2 2.0 % Pre+ Power Output Noise Voltage VNO2I VI = 0, RG = 2.2kΩ, VCONT = Max − 6 10 mV Output Noise Voltage VNO3I RG = 2.2 kΩ, VCONT = Min − 0.25 1.0 mV Cross Talk CT2 Ro = 5mW 20 30 − dB Ripple Rejection Ratio RR VCC = 3V, 100Hz, 100mVp-p 34 40 − dB 3 S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER ATTENUATOR SECTION (Ta = 25°C, VCC = 3V, f = 1kHz, unless otherwise specified) Characteristic Symbol Test Conditions Min. Typ. Max. Unit Maximum Input Voltage VI(MAX) − 0.2 − − V Maximum Attenuation VATT(MAX) VCONT = Min 66 − − dB Attenuation Error VATT(ERR) VCONT = Max − 0 − dB Input Impedance ZI 15 20 − KΩ − MOTOR SPEED CONTROLLER (Ta = 25°C, VCC = 3V, IM = 100mA, unless otherwise specified) Characteristic Symbol Test Conditions Min. Typ. Max. Unit Circuit Current IMC − − 3.0 5.0 mA Starting Current IMS − 500 − − mA 0.72 0.80 0.87 V Reference Voltage VREF V(pin 15, 16) Reference Voltage Regulation 1 ∆VREF1 VCC = 2.1 − 5.0 V − 0.05 − %/V Reference Voltage Regulation 2 ∆VREF2 IM = 25 − 250 mA − 0.01 − %/mA Reference Voltage Regulation 3 ∆VREF3 Ta = -10 ~ 50 °C − 0.01 − %/°C 32 38 43 − Current Coefficient − K Current Coefficient Regulation 1 ∆K1 VCC = 2.1 − 5.0 V − 0.50 − %/V Current Coefficient Regulation 2 ∆K2 IM = 25 − 250 mA − 0.05 − %/mA Current Coefficient Regulation 3 ∆K3 Ta = −10 − 50 °C − 0.02 − %/°C Saturation Voltage VSAT IM = 200mA, Pin14 = VCC − − 0.6 V Leakage Current ILKG Pin 18 = VCC − 50 200 µV * Voltage across Pin 13, 17 4 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01 TEST CIRCUIT S.G 28 27 26 25 RL2 16Ω S.G 33µ 0.022µ + 220µ + 24 MOTOR SW M PRE OFF SW RL1 10K OFF CONT + 220µ 2.2K 23 22 21 1.5K 0.15K 20 19 18 17 16 15 9 10 11 12 13 14 S1A0136A01 1 2 3 4 5 6 7 8 0.022µ + 30K 2.2K 3.3µ S.G RL2 16Ω RL1 10K S.G + VCC 0.1µ ON CONT 5 S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER APPLICATION CIRCUIT 220µ 102 RL1 0.022µ 10kΩ SW 33µ + 28 27 RL2 16Ω 220µ + 26 25 24 23 22 21 M SW 0.15K VCC 1.5K 20 19 18 17 16 15 9 10 11 12 13 14 S1A0136A01 2 3 4 5 6 7 8 SW + 33µ 102 6 0.022µ R L1 10kΩ 30K RL2 16Ω + 1 0.1µ