KA22261 16-DIP-300A 4700P 4700P1

DUAL EQ AMP WITH REC AMP INTRODUCTION The KA22261 is a monolithic intergrated circuit consisting of a dual equalizer amplifier

KA22261 KA22261 DUAL EQ AMP WITH REC AMP INTRODUCTION The KA22261 KA22261 is a monolithic intergrated circuit consisting of a dual equalizer amplifier with REC AMP, and it is suitable for stereo radio cassettes. 16-DIP-300A 16-DIP-300A FEATURES · Dual equalizer amplifier with ALC circuit. · High open loop voltage gain : 78dB (Typ). · Recording amplifier available because of high open loop voltage gain. · Not necessary diode or transistor for ALC. · Good channel separation : 60dB (Typ). · Good ALC response balance between channels. · Wide operating supply voltage range : VCC = 6V ~ 15V. ORDERING INFORMATION Device Package Operating Temperature KA22261 KA22261 16-DIP-300A 16-DIP-300A -20°C~ +70°C BLOCK DIAGRAM REC MUTE OUTPUT1 OUTPUT1 PRE OUTPUT 1 5 PRE NF1 6 7 8 PRE INPU2 INPUT1 10 - PRE NF2 11 15 + ALC 3 - PRE INPU1 INPUT1 4 MUTE IN + REC VREG 16 V CC 2 PRE VS MUTE ALC PRE 9 PRE GND REC 12 PRE OUTPUT2 13 14 REC MUTE OUTPUT2 OUTPUT2 1 REC GND ABSOLUTE MAXIMUM RATINGS = 25°C) (Ta ° Characteristics Symbol Value Unit Supply Voltage Power Dissipation Operating Temperature VCC PD T OPR 16 750 -20 ~ +70 V W °C KA22261 KA22261 DUAL EQ AMP WITH REC AMP Storage Temperature T STG °C -40 ~ +150 ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 9V, f = 1KHz, unless otherwise specified) Characteristics Symbol Test Condition Quiescent Circuit Current ICCQ VI = 0 Min Typ Max Unit 8.5 10.5 Open Loop Voltage Gain GVO VI = -80dbm 65 78 mA dB Output Voltage VO1 THD = 1% 0.5 0.8 V PRE Total Harmonic Distortion THD1 VO = 0.2V 0.15 0.5 % AMP Output Noise Voltage VNO RG = 2.2K, NAB 0.26 0.6 mW Cross Talk CT RG = 2.2K 47 60 Closed Loop Voltage Gain GVC RL = 10K 12.7 14.7 2.0 2.5 BW(-3dB) = 30Ha ~ 20KHz dB 16.7 dB 1.0 % Output Voltage VO2 THD = 1% REC Total Harmonic Distortion THD2 VO = 1.5V AMP ALC Range ( Note 1) ¡âVALC VI = -60dB, RG = 2.2K 45 ALC Distortion THDALC VI = -20dBm,RG = 2.2K 0.3 1.0 VO(ALC) VI= -20dBm, RG = 2.2K 0.9 1.1 1.42 45 55 ALC Voltage Muting Attenuation ATT MUTE ALC Balance CBALC VI = -20dBm *Note 1 : Input voltage range from VI = -60dB to output voltage VO = 3dB up. TEST CIRCUIT 0.3 0 V dB V % dB 2 dB KA22261 KA22261 DUAL EQ AMP WITH REC AMP TO S5 18K CH1 CH2 IN CH1 4700P 4700P S4-1 NAB Gvc + 1000u + 47u GVO 4700P 4700P 1.6K 3.3u TO S8 S3-1 + 18p S2 OFF 9 10 11 4700P 4700P S9 ON Vcc 3.3u 13 PIN Rec OUT OFF 1.8K 12 TO 4700P 4700P 10K 10K + 180K S7 10K 3.3u 2.2K 3.3u + 6800p + 100 14 15 16 3 2 1 KA22261 KA22261 8 7 6 5 180K 3.3u 4 10K 100u + CH2 2.2K 4700p + 3.3u 18p OFF CH2 S8 CH1 1.6K ON OFF CH2 + 2.2M Mute OUT CH2 36K 47u 4700p S5 S6 CH1 6800p S3-2 Gvo + 47u 18K Pre D-OUT + 1.6K 1000u 100 Pre OUT 4700p Fig. 2 APPLICATION CIRCUIT LPF 20KHz KA22261 KA22261 DUAL EQ AMP WITH REC AMP + 100 36K RECORDING HEAD 3.3u R 18K LINE OUT P 4700p + 47u 18p 1000p 1.8K 4700p OFF 180K + + 3.3u HEAD Vcc 10K 3.3u + 9 Mute ON 10 11 12 13 14 15 16 3 2 220 100u 1 KA22261 KA22261 8 7 6 5 4 + 100u 180K + + 18p 3.3u HEAD 3.3u 10K 4700P 4700P + ON ALC + OFF 1000p 4.7u 6800p 4.7u LINE OUT P 2.2M 18K + 36K 100 R 3.3u 4700P1 4700P1 Fig. 3 RECORDING HEAD