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LA1837 Datasheet(PDF) 2 Page - Sanyo Semicon Device |
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LA1837 Datasheet(HTML) 2 Page - Sanyo Semicon Device |
2 / 9 page No. 5688-2/9 LA1837 Parameter Symbol Conditions Ratings Unit min typ max [FM Mono Characteristics] fc = 10.7 MHz, fm = 1 kHz, with the coil adjusted so that VAFC – VREG = 0 V Current drain ICCO-FM With no input 18 31 44 mA Demodulation output VOFM 100 dBµ, 100% mod. The pin 16 output 730 1100 1460 mVrms Channel balance C.B-mono 100 dBµ, 100% mod. The pin 16 output/pin 17 output –1.5 0 +1.5 dB Total harmonic distortion (mono) THDFM(1) 100 dBµ, 100% mod. The pin 16 output 0.3 1.3 % Total harmonic distortion (mono) THDFM(2) 100 dBµ, 200% mod. The pin 16 output 1.0 5 % Signal-to-noise ratio S/NFM 100 dBµ, 100% mod. The pin 16 output 72 80 dB AM rejection ratio AMR 100 dBµ, AM 30 % mod. The pin 16 output 45 65 dB Limiting input voltage –3 dBL.S. 100 dBµ, 100% mod. Referenced to the output. 26 32 38 dBµ The input such that the output is down –3 dB. LED sensitivity SDOn-FM 51 60 69 dBµ LED bandwidth SDBW 100 dBµ 85 120 170 kHz IF count buffer output VIFBuff-FM 100 dBµ. The pin 13 output 80 120 160 mVrms S-meter output VSM-FM(1) 0 dBµ. The pin 11 output 0 0.1 0.5 V VSM-FM(2) 100 dBµ. The pin 11 output 3.6 4.3 5.0 V Muting attenuation Mute-Att 100 dBµ, 100% mod. The pin 16 output 75 85 dB [FM Stereo Characteristics] fc = 10.7 MHz, 100 dBµ, fm = 1 kHz, L + R = 90%, Pilot = 10% Separation (left) SepL L mod. The pin 16 output/pin 17 output 30 45 dB Separation (right) SepR R mod. The pin 17 output/pin 16 output 30 45 dB Stereo on level STON The pilot modulation such that V7 is under 0.7 V. 1.3 2.7 5 % Stereo off level STOFF The pilot modulation such that V7 is over 4.5 V. 1.5 % Total harmonic distortion (main) THD-main L+R mod. The pin 16 output 0.3 1.3 % Brej-3rd fs = 113 kHz, Vs = 90 %, Pilot = 10 %, The pin 40 dB Adjacent channel interference 16 output vs. the L-R mod. 1 kHz demodulated output rejection ratio Brej-5th fs = 189 kHz, Vs = 90 %, Pilot = 10 %, The pin 40 dB 16 output vs. the L-R mod. 1 kHz demodulated output [AM Characteristics] fc = 1000 kHz, fm = 1 kHz Current drain ICCO-AM With no input 15 25 35 mA Detector output VOAM(1) 23 dBµ, 30% mod. The pin 16 output 100 180 360 mVrms VOAM(2) 80 dBµ, 30% mod. The pin 16 output 200 320 500 mVrms Signal-to-noise ratio S/NAM(1) 23 dBµ, 30% mod. The pin 16 output 18 22 dB S/NAM(2) 80 dBµ, 30% mod. The pin 16 output 49 55 dB Total harmonic distortion (mono) THDAM(1) 80 dBµ, 30% mod. The pin 16 output 0.4 1.2 % THDAM(2) 80 dBµ, 80% mod. The pin 16 output 1.0 4.0 % LED sensitivity SDOn-AM 17 27 37 dBµ Local oscillator buffer output VOSC-AM With no input. The pin 30 output 110 160 220 mVrms IF counter buffer output VIFBuff-AM 80 dBµ, no modulation. The pin 13 output 160 220 300 mVrms ST-IF output VSTIF-AM 80 dBµ, no modulation. The pin 7 output 16 34 48 mVrms S-meter output VSM-AM 0 dBµ, no modulation. 0 0 0.2 V Electrical Characteristics at Ta = 25°C, VCC = 9 V, in the specified Test Circuit Ambient temperature, Ta – °C Pd max – Ta |
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