5 BAND DUAL GRAPHIC EQ AMP S1A0234B01 INTRODUCTION 24−SZIP−275 The S1A0234B01 is a monolithic integrated circuit developed for the tereo 5 band graphic equalizer amplifier. It consists of an operational amplifier, and four resonant circuits with an active filter. It is suitable for radio cassette-tape recorders, car stereos or music centers. FEATURES • Tone control with independent adjustment of each band through external capacitor • Gain control through external variable resistor (Gain = ±11dB) • Excellent cross talk characteristics (CT = 70dB Typ, at RG = 0) • Wide operating supply voltage range: VCC = 3.5V — 14V ORDERING INFORMATION Device Package Operating Temperature S1A0234B01-Y0B0 24−SZlP−275 −20°C — + 70°C BLOCK DIAGRAM NF1 BASE1 2 4 NF2 BASE2 NF3 6 8 10 BASE3 NF4 12 14 BASE4 16 BUFFER OUT OUT2 18 20 IN2 GND 22 24 BIAS 1 3 NF1 BASE1 5 7 NF2 BASE2 9 NF3 11 13 BASE3 NF4 15 17 19 21 BASE4 OUT1 BUFFER IN1 OUT 23 GND 1 S1A0234B01 5 BAND DUAL GRAPHIC EQ AMP ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Characteristic Symbol Value Unit Supply Voltage VCC 15 V Power Dissipation PD 500 mW Operating Temperature TOPR −20 — + 70 °C Storage Temperature TSTG −40 — + 125 °C ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 8V, RL= 20K, Flat Mode, unless otherwise specified) Test Conditions Characteristic Quiescent Circuit Current Symbol f(Hz) ICCQ Min. Typ. Max. Unit VI = 0 4.0 7.0 10.0 mA Conditions VO 1K THD = 1% 500 600 − mV THD 1K − − 0.1 0.3 % Channel Balance CB 1K − −1.0 0 1.0 dB Cross Talk CT 1K − 50 70 − dB Output Noise Voltage VNO − 10 20 µV VI = 100mV −2.0 −1.5 1.0 dB VI = 100mV 9.0 11.0 14.0 dB VI = 100mV −14.0 −11.0 −9.0 dB Output Voltage Total Harmonic Distortion Flat GV (Flat) Flat, RG = 2.2K BW(-3 dB) = 10Hz − 30kHz 1K 100 300 Boost GV (Boost) 1K 3K Voltage Gain 10 K 100 300 Cut GV (Cut) 1K 3K 10 K 2 5 BAND DUAL GRAPHIC EQ AMP S1A0234B01 TEST CIRCUIT 0.022µF 1kΩ 100Hz 300Hz 50kΩ 3kHz 1kHz 50kΩ 50kΩ 10kHz 50kΩ 50kΩ OUT2 1µ F 0.33µ F 0.1µ F 0.033µ F 0.033µ F 0.01µ F 0.0033µ F 0.001µ F 4.7µ F IN2 4.7µ F 4.7µ F 2 4 6 8 10 12 14 16 18 20 22 24 15 17 19 21 23 S1A0234B01 1 3 5 7 9 11 13 4.7µ F 0.033µ F 0.01µ F 0.0033µ F 0.001µ F µ 1µ F 0.33µ F 0.1µ F 0.033µ F µ OUT1 220µF 50kΩ 50kΩ 100Hz 50kΩ 300Hz 50kΩ 1kHz 50kΩ 3kHz 10kHz 1kΩ 0.022µF 3 S1A0234B01 4 5 BAND DUAL GRAPHIC EQ AMP