UTC KA22427 LINEAR INTEGRATED CIRCUIT I-CHIP AM/FM RADIO IC DESCRIPTION UTC KA22427 is a one-chip AM/FM radio integrated circuit that is suitable for portable radio applications. It includes AM amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE, FM AGE circuit and also class b Audio Power Amplifier. FEATURES *Low external components count. *Wide operating voltage : 3 - 13 V. *Internal regulated supply for constant current operation. *DC selection of AM/FM mode. DIP-16 BLOCK DIAGRAM AM/FM IN AM IF OUT HF GND 4 3 2 IF bypass AGC bypass 1 16 AM/FM OUT 15 AM/FM IF IF Detector IN 14 AM/FM discriminato AM HF MIXER +Vcc 13 Regulator Audio amplifier AM LO 5 AM local OSC 6 AM HF IN 7 HF bypass 8 9 10 Audio Audio in Ripple Suppression detector out 11 12 Audio GND Audio power out ABSOLUTE MAXIMUM RATING(Ta=25°C) PARAMETER SYMBOL VALUE UNIT SUPPLY VOLTAGE VCC 11 V SUPPLY CURRENT ICC 44 mA POWER DISSIPATION PD 600 mW THERMAL RESISTANCE RJ-A 100 °C/W OPERATING TEMPERATURE TOPX -18~65 °C STORAGE TEMPERATURE TSTG -40~125 °C NOTE:Ta>25°C, DERATE WITH 10mW/°C UNLESS SPECIFIED. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-002,A UTC KA22427 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS PARAMETER Quiescent Circuit SYMBOL TEST CONDITIONS MIN TYP MAX UNIT ICCQ SW1→FM,VCC=3V 7 12 17 mA SW1→FM,VCC=9V 10 17 23 V16(FM) SW1→FM,ICC=42mA 2.0 2.4 3.1 VIN(lim) SW1→FM,VCC=5.5V,-3dB Current Pin 16 Terminal V Voltage Limiting Voltage 57 dBµV V16=2.4V,VR=Min. Internal Regulated VCC SW1→AM,ICC=42mA 12.5 13.2 14.0 V 1.9 V Voltage Pin 16 Voltage V16(AM) SW1→AM,VCC=9V 1.4 Signal to Noise VO SW1→AM,VCC=12V,VIN=37dB 1.5 3.0 V 15 20 dB Ratio SW2→45Ω,V16=1.4V Maximum Sensitivity S/N SW1→AM,VCC=5.5V, SW2→8Ω,VIN=37.5dB Power Output POUT SW2→8Ω,VCC=5.5V,f=1KHZ VR=Min. Total Harmonic THD W SW2→45Ω,ICC=42mA,f=1KHZ Distortion Voltage Gain 0.28 THD=10% VR=Min. GV 0.5 4.0 % VOUT=2V SW2→8Ω,VCC=5.5V,f=1KHZ 40 dB VR=Min. INPUT - OUTPUT IMPEDANCE(Ta=25°C,VCC=6V) SYMBOL TEST CONDITIONS Pin 2 Input ( AM ) PARAMETER Rip2(AM) f=465KHZ MIN TYP 200 MAX UNIT Impedance ( AM ) Cip2(AM) f=465KHZ 3 pF Pin 2 Input ( FM ) Rip2(FM) f=10.7MHZ 30 KΩ Impedance（FM） KΩ Cip2(FM) f=10.7MHZ 3.5 pF Pin 4 Output Rop4 f=465KHZ 300 KΩ Impedance Cop4 f=465KHZ 6 pF Pin 6 Input Rip6 f=1MHZ 50 KΩ Impedance Cip6 f=1MHZ 5 pF Pin 14 Input ( AM ) Rip14(AM) f=465KHZ 300 KΩ Impedance（AM） Cip14(AM) f=465KHZ 3.5 pF Pin14 Input ( FM ) Rip14(FM) f=10.7MHZ 300 KΩ Impedance（FM） Cip14(FM) f=10.7MHZ 4 pF Pin15 Output ( AM ) Rop15(AM) f=465KHZ 300 KΩ Impedance（AM） Cop15(AM) f=465KHZ 5.5 pF Pin15 Output ( FM ) Rop15(FM) f=10.7MHZ 300 KΩ Impedance（FM） Cop15(FM) f=10.7MHZ 6 pF UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-002,A UTC KA22427 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 0.047 µF V13 1 220pF 470 µF V16 Vcc Icc 6 2 3 4 OUTPUT 470 µF 4 1.2kΩ 3 220 µF GND 10pF AM 45Ω 4.7kΩ 1 6 SW1 8Ω 1 6 3 2 FM 470 µF 2 4 SW2 16 15 14 13 12 11 0.001 µF 10 9 UTC KA22427 22kΩ Rg=50Ω HF SIGNAL ~ 1 2 3 4 5 6 7 8 3.3 µF 0.022 µF 1 6 3 4 4 6 6 3 2 3 4 4 3 2pF ~ 1 50次 1 0.047 µF 51pF 220pF 50Ω 2 Rg=600Ω AUDIO SIGNAL 2 2 680pF 5kΩ 0.01 µF 6 1 0.022 µF 0.022 µF FM AM FM IF INOUT SW1 AM HF INPUT VOD INPUT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-002,A