LA1844 - FM-AM HF Amplifiers - maxdat.eu

LA1844,LA1844MSpecificationsMaximum Ratings at Ta = 25°CParameter Symbol Conditions Ratings UnitMaximum supply voltage V CC max 9 VAllowable power dissipationPd maxTa ≤ 45°C 400 mWTa ≤ 80°C 260 mWOperating temperature Topr -20 to +80 °CStorage temperature Tstg -20 to +150 °COperating Conditions at Ta = 25°CParameter Symbol Conditions Ratings UnitRecommended supply voltage V CC 5 VOperating supply voltage range V CC op 4.3 to 8.0 VElectrical Characteristics at Ta = 25°CFM Mono Characteristics at fC = 10.7MHz, VCC = 5VRatingsParameter Symbol Conditionsmin typ maxUnitCurrent drain I CCO-FM With no input signal 18 28 38 mADemodulator output V OFM 100dBµ, 100% modulation, fm = 1kHz 210 330 420 mVrmsTotal harmonic distortion THD FM mono 100dBµ, 100% modulation, fm = 1kHz 0.35 1.5 %Signal-to-noise ratio S/N FM 100dBµ, 100% modulation, fm = 1kHz 73 80 dBAM rejection ratio AMR 100dBµ, AM 30% modulation, fm = 1kHz 47 65 dB3dB sensitivity Vi-limit 100dBµ, 100% modulation,32 40 dBµfm = 1kHz output reference, -3dB inputSD sensitivity LED Sens 0% modulation 37 47 57 dBµIF counter buffer output V IFBuff-FM 100dBµ 200 275 400 mVrmsMute attenuation Mute-Att 100dBµ, 100% modulation, fm = 1kHz 76 dBFM Stereo Characteristics at fC = 10.7MHz, 100dBµ, VCC = 5VRatingsParameter Symbol Conditionsmin typ maxUnitSeparation Sep L+R = 90%, Pilot = 10%, fm = 1kHz 30 42 dBStereo on level ST ON Pilot input 1.5 3.5 5.5 %Total harmonic distortion THD-main Pilot input 0.45 1.5 %Adjacent channel rejection ratio 1 BR1 fs = 113kHz, Vs = 90%, pilot = 10% :36 dBThe left - right modulation, demodulated outputAdjacent channel rejection ratio 2 BR2 fs = 189kHz, Vs = 90%, pilot = 10% :41 dBThe left - right modulation, demodulated outputCarrier leak CL L+R = 90%, pilot = 10% reference,pilot = 10% output38 44 dBAM Characteristics at fC = 1000kHz, VCC = 5VRatingsParameter Symbol Conditionsmin typ maxUnitCurrent drain I CCO-AM With no input signal 11 22 33 mADetector outputV OAM1 23dBµ, 30% modulation, fm = 1kHz 40 80 160 mVrmsV OAM2 80dBµ, 30% modulation, fm = 1kHz 90 160 230 mVrmsSignal-to-noise ratioS/N AM1 23dBµ, 30% modulation, fm = 1kHz 17 23 dBS/N AM2 80dBµ, 30% modulation, fm = 1kHz 48 54 dBTotal harmonic distortionTHD AM1 80dBµ, 30% modulation, fm = 1kHz 0.4 1.1 %THD AM2 107dBµ, 30% modulation, fm = 1kHz 0.5 1.3 %SD sensitivity SD-Sens 0% modulation 11 21 31 dBµLocal oscillator buffer output V OSC-AM With no input signal 100 140 200 mVrmsIF counter buffer output V IFBuff-AM 23dBµ 140 285 400 mVrmsNo.7930A-2/11