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LA1787M Datasheet(PDF) 2 Page - ON Semiconductor |
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LA1787M Datasheet(HTML) 2 Page - ON Semiconductor |
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2 / 54 page  Ratings Parameter Symbol Conditions min typ max unit [FM Characteristics] At the FM IF input Current drain ICCO-FM No input, I40 + I45 + I54 + I59 + I60 + I61 60 94 110 mA Demodulation output VO-FM 10.7 MHz, 100dBµ, 1 kHz, 100%mod, The pin 15 output 205 310 415 mVrms Pin 31 demodulation output VO-FM31 10.7 MHz, 100dBµ, 1 kHz, 100%mod, The pin 31 output 190 295 380 mVrms Channel balance CB The ratio between pins 15 and 16 at 10.7 MHz, 100 dBµ, 1 kHz –1 0 +1 dB Total harmonic distortion THD-FM mono 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15 0.3 1 % Signal-to-noise ratio: IF S/N-FM IF 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15 75 82 dB AM suppression ratio: IF AMR IF 10.7 MHz, 100 dBµ, 1 kHz, fm = 1 kHz, 30% AM, pin 15 55 68 dB Att-1 10.7 MHz, 100 dBµ, 1 kHz. The pin 15 5 10 15 dB attenuation when V33 goes from 0 to 2 V Muting attenuation Att-2 10.7 MHz, 100 dBµ, 1 kHz. The pin 15 15 20 25 dB attenuation when V33 goes from 0 to 2 V*1 Att-3 10.7 MHz, 100 dBµ, 1 kHz. The pin 15 28 33 38 dB attenuation when V33 goes from 0 to 2 V*2 Separation Separation 10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. The pin 15 output 30 40 dB ratio Stereo on level ST-ON The pilot modulation such that V26 < 0.5 V 1.2 2.4 4.4 % Stereo off level ST-OFF The pilot modulation such that V26 > 3.5 V 0.6 1.6 % Main total harmonic distortion THD-Main L 10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. The pin 15 signal 0.3 1.2 % Pilot cancellation PCAN 10.7 MHz, 100 dBµ, pilot = 10%. 20 30 dB The pin 15 signal/the pilot level leakage. DIN audio SNC output attenuation AttSNC 10.7 MHz, 100 dBµ, L-R = 90%, pilot = 10%. 1 5 9 dB V28 = 3 V → 0.6 V, pin 15 AttHCC-1 10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%, pilot = 10%. 0.5 4.5 8.5 dB HCC output attenuation V29 = 3 V → 0.6 V, pin 15 AttHCC-2 10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%, 6 10 14 dB pilot = 10%. V29 = 3 V → 0.1 V, pin 15 Input limiting voltage Vi-lim 100 dBµ, 10.7 MHz, 30% modulation. The IF input such 33 40 47 dBµ that the input reference output goes down by 3 dB Muting sensitivity Vi-mute The IF input level (unmodulated) when V33 = 2 V 27 35 43 dBµ SD-sen1 FM The IF input level (unmodulated) (over 100 mV rms) 54 62 70 dBµ SD sensitivity such that the IF counter buffer output goes on SD-sen2 FM 54 62 70 dBµ IF counter buffer output VIFBUFF-FM 10.7 MHz, 100 dBµ, unmodulated. The pin 23 output 130 200 270 mVrms VSM FM-1 No input. The pin 24 DC output, unmodulated 0.0 0.1 0.3 V Signal meter output VSM FM-2 50 dBµ. The pin 24 DC output, unmodulated 0.4 1.0 1.5 V VSM FM-3 70 dBµ. The pin 24 DC output, unmodulated 2.0 2.7 3.5 V VSM FM-4 100 dBµ. The pin 24 DC output, unmodulated 4.7 5.5 6.2 V Muting bandwidth BW-mute 100 dBµ. The bandwidth when V33 = 2 V, unmodulated 150 220 290 kHz Mute drive output VMUTE-100 100 dBµ, 0 dBµ. The pin 33 DC output, unmodulated 0.00 0.03 0.20 V Operating Characteristics at Ta = 25°C, VCC= 8.0V, in the specified test cricuit for the FM IF input Continued on next page. No. 6655-2/54 LA1787M Specifications Maximum Ratings at Ta = 25°C Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC1 max Pins 6, 40, and 61 9 V VCC2 max Pins 7, 45, 54, 59, and 60 12 V Allowable power dissipation Pd max Ta ≤ 55°C 950 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –40 to +150 °C Parameter Symbol Conditions Ratings Unit Recommended supply voltage VCC Pins 6, 7, 40, 45, 54, 59, 60, and 61 8 V VCCST IND Pin 26 5 V Operating supply voltage range VCC op 7.5 to 9.0 V |
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