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LA1781M Folha de dados(PDF) 2 Page - Sanyo Semicon Device |
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LA1781M Folha de dados(HTML) 2 Page - Sanyo Semicon Device |
2 / 48 page LA1781M No.6038-2/48 Specifications Maximum Ratings at Ta = 25 °C Parameter Symbol Conditions Ratings Unit VCC1 max Pins 6, 40, and 61 9 V Maximum supply voltage 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 Operating Conditions at Ta = 25 °C Parameter Symbol Conditions Ratings Unit VCC Pins 6, 7, 40, 45, 54, 59, 60, and 61 8 V Recommended supply voltage VCCST IND Pin 26 5V Operating supply voltage range VCC op 7.5 to 9.0 V Electrical Characteristics at Ta = 25°C, VCC = 8V, in the specified test circuit for the FM IF input 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 10.7MHz, 100dB μ, 1kHz, 100%mod, The pin 15 output 205 310 415 mVrms Pin 31 demodulation output VO-FM31 10.7MHz, 100dB μ, 1kHz, 100%mod, The pin 31 output 190 295 380 mVrms Channel balance CB The ratio between pins 15 and 16 at 10.7MHz, 100dB μ, 1kHz -1 0 +1 dB Total harmonic distortion THD-FM mono 10.7MHz, 100dB μ, 1kHz, 100% mod, pin 15 0.3 1.0 % Signal-to-noise ratio : IF S/N-FM IF 10.7MHz, 100dB μ, 1kHz, 100% mod, pin 15 75 82 dB AM suppression ratio: IF AMR IF 10.7MHz, 100dB μ, 1kHz, fm = 1kHz, 30% AM, pin 15 55 68 dB Att-1 10.7MHz, 100 dB μ, 1kHz. The pin 15 attenuation when V33 goes from 0 to 2V 5 10 15 dB Att-2 10.7MHz, 100 dB μ, 1kHz. The pin 15 attenuation when V33 goes from 0 to 2V* 1 15 20 25 dB Muting attenuation Att-3 10.7MHz, 100 dB μ, 1kHz. The pin 15 attenuation when V33 goes from 0 to 2V* 2 28 33 38 dB Separation Sep 10.7MHz, 100dB μ, L + R = 90%, pilot = 10%. The pin 15 output ratio 30 40 dB Stereo on level ST-ON The pilot modulation such that V26 < 0.5V 2.1 4.1 6.5 % Stereo off level ST-OFF The pilot modulation such that V26 > 3.5V 1.2 3.1 % Main total harmonic distortion THD-Main L 10.7MHz, 100dB μ, L + R = 90%, pilot = 10%. The pin 15 signal 0.3 1.2 % Pilot cancellation PCAN 10.7MHz, 100dB μ, pilot = 10%. The pin 15 signal/the pilot level leakage. DIN audio 20 30 dB SNC output attenuation AttSNC 10.7MHz, 100dB μ, L - R = 90%, pilot = 10%. V28 = 3V → 0.6V, pin 15 1 5 9 dB AttHCC-1 10.7MHz, 100dB μ, 10kHz, L + R = 90%, pilot = 10%. V29 = 3V → 0.6V, pin 15 0.5 4.5 8.5 dB HCC output attenuation AttHCC-2 10.7MHz, 100dB μ, 10kHz, L + R = 90%, pilot = 10%. V29 = 3V → 0.1V, pin 15 6 10 14 dB Input limiting voltage VIN-LIM 100dB μ, 10.7MHz, 30% modulation. The IF input such that the input reference output goes down by 3dB 33 40 47 dB μ Muting sensitivity VIN-MUTE The IF input level (unmodulated) when V33 = 2V 27 35 43 dB μ SD-sen1 FM The IF input level (unmodulated) (over 100mV rms) such that the IF counter buffer output goes on 54 62 70 dB μ SD sensitivity SD-sen2 FM 54 62 70 dB μ IF counter buffer output VIFBUFF-FM 10.7MHz, 100dB μ, unmodulated. The pin 23 output 130 200 270 mVrms VSMFM-1 No input. The pin 24 DC output, unmodulated 0.0 0.1 0.3 V VSMFM-2 50dB μ. The pin 24 DC output, unmodulated 0.4 1.0 1.5 V VSMFM-3 70dB μ. The pin 24 DC output, unmodulated 2.0 2.7 3.5 V Signal meter output VSMFM-4 100dB μ. The pin 24 DC output, unmodulated 4.7 5.5 6.2 V Muting bandwidth BW-MUTE 100dB μ. The bandwidth when V33 = 2V, unmodulated 150 220 290 kHz Mute drive output VMUTE-100 100dB μ, 0dBμ. The pin 33 DC output, unmodulated 0.00 0.03 0.20 V Continued on next page. |
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