KKA1238NS

www.DataSheet4U.com TECHNICAL DATA FM/AM STEREO RADIORECEIVER DESCRIPTION KKA1238NS KKA1238NS is a high performance one - chip bipolar ICS designed for FM/AM stereo radios. These include an FM/AM front end, FM/AM IF amplifier, FM/AM detection output and FM stereo demodulator output. Bipolar silicon monolithic IC. FEATURES Low current consumption (In FM mode ID = 11.0 mA, in AM mode 8.5 mA, VCC = 6.0V). Built - in LED drive circuit for tuning. Built - in LED drive circuit for stereo indicator. Built - in detune muting circuit for the FM band. Few external parts. ELECTRICAL CHARACTERISTICS(TA = 25°C) Symbol ID1/D2 GV1 VD1/D3 VD2 THD1/HD2 GV2 GV3 SEP VI1 A1 Parameter AM/FM circuit current FM front end voltage gain FM/AM detection output level FM IF knee level FM/AM detection output distortion factor AM front end voltage gain AM IF voltage gain Separation M/ST switching level by IF input FM Mute Vin5=245mVrms, MONO,1kHz ATT VIN2 = 60dBmV, 1660kHz 19 15 30 38 16 Test Conditions No signal AM/FM VIN1 = 40dBmV, 100MHz 28 35 Guaranteed Limits Min Typ 8.5/11 35 77.5 25 0.3/0.6 24 21 40 43 23 48 30 Max 12.0/ 15.0 42 138 31 2.0 28 29 mA dB VRMS dBmV % dB dB dB dBmV dB Unit 1 www.DataSheet4U.com KKA1238NS BLOCK-SCHEME 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 VCO MULTIPLEX REGULATOR PD1 PD2 FM FE REGULATOR AM FE 1/2 COUNTER MUTING DC AMP FM IF DISCRI DECODE AMP BU AMP RIPPLE FILTER AUTO BLEND BU AMP DETUNE MUTING CONTROL 11 12 AM IF DET T...