DUAL LOW NOISE EQUALIZER AMPLIFIER S1A2221A02 INTRODUCTION 8−SIP The S1A2221A02 is a monolithic integrated circuit consisting of a 2-channel pre-amplifier in a 8-pin plastic single in line package. The minimum operating voltage is 2.5V, Making it suitable for low voltage application. FEATURES • Wide operating supply voltage: VDD = 2. 5V − 6V • Low noise (VHI = 1.0µV: Typ) • High channel separation • Good ripple rejection ratio • Minimum number of external parts required ORDERING INFORMATION Device Package Operating Temperature S1A2221A02-I0U0 8-SlP −20°C − +70°C BLOCK DIAGRAM AMP1 AMP2 1 2 3 4 5 6 7 INPUT1 NF1 OUTPUT1 VCC GND OUTPUT2 NF2 8 INPUT2 1 S1A2221A02 DUAL LOW NOISE EQUALIZER AMPLIFIER ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Characteristic Symbol Value Unit Supply Voltage VCC 7.5 V Power Dissipation PD 200 mW Operating Temperature TOPR − 20 − +70 °C Storage Temperature TSTG − 40 − +125 °C ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 4V, RL = 10kΩ, RG = 600Ω, f = 1kHz, NAB, unless otherwise specified) Characteristic Symbol Test Conditions Typ. Max. Unit − 2.0 6.0 mA 65 80 − dB Quiescent Circuit Current ICCQ Open Loop Voltage Gain GVO Closed Loop Voltage Gain GVC VO = 0.2V 33 35 37 dB VO THD = 1% 0.4 0.7 − V THD VO = 0.2V − 0.1 0.3 % Output Voltage Total Harmonic Distortion VI = 0 Min. − Input Resistance RI − − 150 − kΩ Equivalent Input Noise Voltage VNI RG = 2.2kΩ BW (−3dB) = 15Hz − 30kHz − 1.0 2.0 V Cross Talk CT RG = 2. 2kΩ 50 65 − dB 2 DUAL LOW NOISE EQUALIZER AMPLIFIER S1A2221A02 + TEST CIRCUIT 240 C5 4 C2 10µ/6.3V + INPUT 1 + R1 R2 47µ/6.3V C8 0.015µ 7.5K R3 100K 2 1 + + OUTPUT 1 10K RL S1A2221X02 C4 10µ/6.3V C3 1000p C7 10µ/6.3V 3 C1 1000p INPUT 2 VCC 4V C8 47µ/6.3V C9 10µ/6.3V 8 5 7 R5 7.5K 6 C10 0.015µ + OUTPUT 2 RL 10K + C11 47µ/6.3V R4 100K R6 240 3 S1A2221A02 4 DUAL LOW NOISE EQUALIZER AMPLIFIER DUAL LOW NOISE EQUALIZER AMPLIFIER S1A2221A02 APPLICATION CIRCUIT Vcc 47 47K + 0.018µ 120K 0.018µ 4 L-CH + R/P Head 47K 3 power 1µ/50V 3300p 6.8K + power 1µ/50V 3300p 1µ/50V + S1A1222X 10µ/25V + 2 1 10µ/25V + 6.8K 470µ/10V 8 200K SW (PLAY/REC): PLAY + 6 5 1µ/50V 7 120K 47µ/10V 2200p 2200p 68 47µ/10V 56K 68 56K 0.039µ + + R/P Head 0.039µ R-CH 5 S1A2221A02 DUAL LOW NOISE EQUALIZER AMPLIFIER NOTES 6