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| UTC1353 TV SOUND SYSTEM DESCRIPTION LI NEAR I NTEGRATED CI RCUI T The UTC1353 is a monolithic integrated circuit designed for the SIF and audio section in television receivers. This IC has all functions including sound IF amplifier, FM detector, DC volume control circuit, audio output amplifier with 2.4Watts output power and voltage regulator. FEATURES *Wide operating voltage (9V to 18V) 2.4W, at Vcc=18V, RL=8(For 17" TV) 1.2W, at Vcc=12V, RL=8(For 12" TV) *linear volume control *Low Harmonic distortion *Differential peak detector *Enough attenuation (typical, 80dB) by squelch circuit DIP-14H TYPICAL APPLICATION CIRCUIT RB Vcc 220F Deemphasis 0.015F SIF Detector 4.7F Sound Power input 3 22k 4 7 5 Volume VR Control 5k 270 0.1F 14 Electronic attenuation Voltage Regulator 100F 0.01F Supply voltage for sound power stage 10 12 Input 0.022F 13 IF input Amp squelch FM Detector 9 Audio power Amp 100F 8 330F 22 TAB FM Detetor Coil 1 2 100F 10pF 6 11 470pF 47F Feedback Capacitor Decoupling w w w .d sh ta a ee u. 4 CS LTD tYOUW ANG ELECTRONI CO. om c 1 www..com Bootstrap capacitor Speakphone UTC1353 Characteristic Supply Voltage(pin10) Supply Current(pin10) Supply Current(pin5) Input Signal voltage Operating Temperature Storage Temperature Power dissipation Power dissipation LI NEAR I NTEGRATED CI RCUI T Symbol V10 I10 I5 Vi Topr Tstg PD1 PD2 ABSOLUTE MAXIMUM RATINGS(Ta=25C ) Value 20 1 100 3 -20 to +75 -40 to 150 0.8 free air,Ta=75C 1.4 Unit V A mA V C C W W ELECTRICAL CHARACTERISTICS 1.IF STAGE (Ta=25C,Vcc=12V,V14>1,3V,RB=100 fm=4.5MHz,fo=400Hz,f=25kHz,Rg=50,unless otherwise specified) Characteristic Pin 5 Voltage Pin 5 Voltage Pin 10 Current Pin10 Current IF limiting voltage Detector Output Voltage Detector Distortion Deviation of Pull-in Range vs AM Rejection Maximum Attenuation Symbol V5A V5B I10A I10B VLIM VOAF THD1 AMR VATT Test Condition Vcc=18V,Rb=330 Vi=0 Vcc=18V,Rb=330,Vi=0 VOAF(Vi=10mVrms),-3dB Vi=10mVrms Vi=10mVrms AM mod=30%,fm=400Hz, Vi=10mVrms V14=0 Min 7.5 7.5 14 16 300 -40 -60 Typ. 8.0 8.0 19 28 200 360 0.7 -50 -80 Max 8.5 8.5 24 35 400 Unit V V mA mA Vrms mVrms % dB dB 2.SOUND POWER STAGE (Ta=25C,Vcc=12V,RL=8 f=400Hz,Rg=600,unless otherwise specified) Characteristic Symbol Test Condition Min Typ. Max Sound stage voltage gain Sound Output Power Sound Output Power Sound output distortion Sound output distortion Overall Sound Output distortion (IF + Sound Power Stage) GVAF POA POB THD2A THD2B THD3 Vi=20mVrms THD=10% Vcc=18%,RB=330,THD=10% Po=0.5W Vcc=18%,RB=330,Po=0.5W Po=0.5W,Vi=10mVrms 33 0.9 2.0 16 37 1.2 2.4 0.6 0.5 1.5 41 Unit dB W W % % % 2.0 2.0 4.0 3.TYPICAL DATA Characteristic Pin 10 Current Pin10 Current Sound Output Power Sound Output Power Sound Stage Band width Symbol I10A I10B POA POB Fs Test Condition THD2A=10% THD2B=10% THD=3% Vcc=18%,RB=330,THD=3% -3dB Min Typ. 205 275 1.1 2.0 Max Unit mA mA W W Hz 50 50k YOUW ANG ELECTRONI CO. CS LTD 2 UTC1353 TEST CIRCUIT 47F 47F S3 LI NEAR I NTEGRATED CI RCUI T S4 AF Signal f=400Hz KF 600 VV VV 47F 47F 0.015F 100F AMP Gv=60dB VV 3 S1 0.01F 7 4 11 6 10 DC Current Meter 220F 12 IF Signal f=6.5MHz RG=50 I10 Vcc 12V or 18V 13 0.022F UTC1353 330F 8 100F RL=8 KF VV 9 TAB VV AV Voltage Meter S2 10pF 1 2 14 22k 5k 5 RB 0.01F 100F I5 220F V5 V14 RB : Vcc 12V:100 Vcc 18V:330 DC Voltage Meter YOUW ANG ELECTRONI CO. CS LTD 0.1F Distortion KF meter DC Voltage V1 Meter DC Voltage Meter 3 UTC1353 LI NEAR I NTEGRATED CI RCUI T TYPICAL PERFORMANCE CHARACTERISTICS Supply Current 25 20 18 20 16 RB=300 Total Harmonic Distortion f=1kHz Vcc=12V supply current (mA) 14 THD2 (%) 15 12 10 8 6 f=1kHz Vcc=18V 10 5 4 2 0 0 2 4 6 8 10 12 14 16 18 20 0 0.5 1.0 1.5 2.0 2.5 Supply Voltage (V) Output Power (W) Detected Output Voltage 500 Frequency Reponse Vcc=12V Vi=30mVrms Detected Output Voltage (mVrms) 400 0 300 Gain Reduction (dB) 6 -1 -2 -3 -4 -5 -6 -7 10 10 2 200 100 0 10 2 Vcc=12V fo=6.5MHz 100%FM 30%AM fm=400Hz f=+25kHz Vi=10mVrms 10 3 10 4 10 5 10 10 3 10 4 10 5 Input Voltage (Vrms) Frequency (Hz) Audio Amplifier Output power 5 3 Power Dissipation PCB Thickness t=1.5mm Copper Thickness t=30m Power Dissipation (W) 4 f=1kHz V=18V THD=10% Output Power (W) 2 2 50x50(mm) 3 V=12V THD=10% 2 1 Free on Air 1 0 10 100 1000 0 0 50 100 150 Input Voltage Viaf(mVrms) Temperature (k) YOUW ANG ELECTRONI CO. CS LTD 4 |
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