UTC KA22241 LINEAR INTEGRATED CIRCUIT DUAL EQUALIZER AMPLIFIER WITH ALC DESCRIPTION The UTC KA22241 is a monolithic integrated circuit, consisting of dual equalizer amplifier with ALC, and it is suitable for stereo radio cassette tape recorders. FEATURES *Dual equalizer amplifier with built-in ALC circuit *Low noise VNI=1.0µV(Typical) *High open loop voltage gain: Gv=80dB(Typical) *Good ALC response balance between channels *Not necessary the input coupling capacitor *Not necessary the diode or transistor for ALC *Built in power supply muting circuit *Minimum number of external parts required SIP-9 BLOCK DIAGRAM channel 1 channel 2 mute ALC 1 2 3 NF1 IN1 OUT1 4 GND 5 6 7 8 ALC Vcc OUT2 IN2 9 NF2 ABSOLUTE MAXIMUM RATING(Ta=25°C) PARAMETER SYMBOL VALUE VCC 16 V Operating Temperature TOPR -20 to 75 °C Storage Temperature TSTG -20 to 125 °C PD 550 mW Supply Voltage Power Dissipation UTC UNIT UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-001,A UTC KA22241 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS(Ta=25°C, VCC=7V, f=1KHZ, unless otherwise specified) MIN TYP MAX UNIT Quiescent Circuit Current PARAMETER SYMBOL ICCQ VI=0 TEST CONDITIONS 1.5 3.5 4.5 mA Open Loop Voltage Gain GVO VO=0.3V 70 80 Closed Loop Voltage GVC VO=0.3V 45 48 Output Voltage VO THD=1% 0.6 1.2 Total Harmonic Distortion THD VO=0.3V Input Noise Voltage VNI RO=2.2KΩ BW(-3dB)=20HZ¡ ª 20KHZ dB 50 dB 0.1 0.3 % 1.0 2.0 µV 15 25 45 kΩ 40 45 Game Input Resistance RI ALC Range ¦ ¤ VALC RO=3.9KΩ,THD=10% ALC Balance CBALC VI=1mV V dB 0 2.5 dB 8 9 TEST CIRCUIT UTC KA22241 10 µF 39Ω A 100 µF 10kΩ SW 5 7 3.9kΩ 330 µF 1MΩ 3.9kΩ 2.2kΩ SW 1 SW 3 C D 220Ω 4.3kΩ 120kΩ 6 SW 4 0.027 µF SW 2 15kΩ 5 ~ SW 8 ~ 0.027 µF SW 7 4 SW 9 120kΩ SW 10 4.3kΩ 15kΩ 2.2kΩ 3 SW 6 2 2.2 µF 1 10 µF 39Ω SW 11 B 10kΩ 100 µF Vcc UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-001,A UTC KA22241 LINEAR INTEGRATED CIRCUIT TEST METHOD SYMBOL ICCQ GVO GVC THD VO VNI-1 VNI-2 VALC CBALC SW1 ON ON OFF OFF OFF OFF ON OFF OFF SW2 OFF OFF ON ON ON ON OFF OFF OFF SW3 1 1 1 1 1 1 1 2 2 SW4 ON ON ON ON ON ON ON OFF OFF SW5 3 1 1 1 1 2 3 1 1 SW6 ON ON ON ON ON ON ON OFF OFF SW7 ON ON ON ON ON ON ON ON OFF SW8 3 3 3 3 3 3 2 3 1 SW9 SW10 SW11 1 OFF ON 1 OFF ON 1 OFF ON 1 OFF ON 1 OFF ON 1 OFF ON 1 ON OFF 1 OFF ON 2 OFF ON APPLICATION CIRCUIT channel 1 channel 2 mute ALC 4 5 330 µF 1MΩ 22 µF 10 µF 10 µF 3.9kΩ 100 µF 39Ω 6 7 8 9 Vcc=7V 220Ω R1 15kΩ 100 µF 39Ω 3 10 µF 3.9kΩ 2 R1 15kΩ 10 µF 1 Note: On playback, connect the time constant circuit as follows below, instead of R1, R2 of PINS 1-3, 7-9, which are used in the NAB. 120kΩ PIN1-3 4.3kΩ PIN7-9 0.027µF UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-001,A