Ordering number : ENN6655 LA1787M Monolithic Linear IC LA1787M Specifications Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit V 1 max Pins 6, 40, and 61 9 V CC Maximum supply voltage V 2 max Pins 7, 45, 54, 59, and 60 12 V CC Allowable power dissipation Pd max Ta 55C 950 mW Operating temperature Topr 40 to +85 C Storage temperature Tstg 40 to +150 C Operating Conditions at Ta = 25C Parameter Symbol Conditions Ratings Unit V Pins 6, 7, 40, 45, 54, 59, 60, and 61 8 V CC Recommended supply voltage V ST IND Pin 26 5 V CC Operating supply voltage range V op 7.5 to 9.0 V CC Operating Characteristics at Ta = 25C, V = 8.0V, in the specified test cricuit for the FM IF input CC Ratings unit Parameter Symbol Conditions min typ max FM Characteristics At the FM IF input Current drain I -FM No input, I40 + I45 + I54 + I59 + I60 + I61 60 94 110 mA CCO Demodulation output V -FM 10.7 MHz, 100dB, 1 kHz, 100%mod, The pin 15 output 205 310 415 mVrms O Pin 31 demodulation output V -FM31 10.7 MHz, 100dB, 1 kHz, 100%mod, The pin 31 output 190 295 380 mVrms O Channel balance CB The ratio between pins 15 and 16 at 10.7 MHz, 100 dB, 1 kHz 1 0 +1 dB Total harmonic distortion THD-FM mono 10.7 MHz, 100 dB, 1 kHz, 100% mod, pin 15 0.3 1 % Signal-to-noise ratio: IF S/N-FM IF 10.7 MHz, 100 dB, 1 kHz, 100% mod, pin 15 75 82 dB AM suppression ratio: IF AMR IF 10.7 MHz, 100 dB, 1 kHz, f = 1 kHz, 30% AM, pin 15 55 68 dB m 10.7 MHz, 100 dB, 1 kHz. The pin 15 Att-1 5 10 15 dB attenuation when V33 goes from 0 to 2 V 10.7 MHz, 100 dB, 1 kHz. The pin 15 Muting attenuation Att-2 15 20 25 dB *1 attenuation when V33 goes from 0 to 2 V 10.7 MHz, 100 dB, 1 kHz. The pin 15 Att-3 28 33 38 dB *2 attenuation when V33 goes from 0 to 2 V 10.7 MHz, 100 dB, L+R = 90%, pilot = 10%. The pin 15 output Separation Separation 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 dB, L+R = 90%, pilot = 10%. The pin 15 signal 0.3 1.2 % 10.7 MHz, 100 dB, pilot = 10%. Pilot cancellation PCAN 20 30 dB The pin 15 signal/the pilot level leakage. DIN audio 10.7 MHz, 100 dB, L-R = 90%, pilot = 10%. SNC output attenuation AttSNC 1 5 9 dB V28 = 3 V 0.6 V, pin 15 10.7 MHz, 100 dB, 10 kHz, L+R = 90%, pilot = 10%. AttHCC-1 0.5 4.5 8.5 dB V29 = 3 V 0.6 V, pin 15 HCC output attenuation 10.7 MHz, 100 dB, 10 kHz, L+R = 90%, AttHCC-2 6 10 14 dB pilot = 10%. V29 = 3 V 0.1 V, pin 15 100 dB, 10.7 MHz, 30% modulation. The IF input such Input limiting voltage Vi-lim 33 40 47 dB 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 dB The IF input level (unmodulated) (over 100 mV rms) SD-sen1 FM 54 62 70 dB such that the IF counter buffer output goes on SD sensitivity SD-sen2 FM 54 62 70 dB IF counter buffer output V 10.7 MHz, 100 dB, unmodulated. The pin 23 output 130 200 270 mVrms IFBUFF-FM V FM-1 No input. The pin 24 DC output, unmodulated 0.0 0.1 0.3 V SM V FM-2 50 dB. The pin 24 DC output, unmodulated 0.4 1.0 1.5 V SM Signal meter output V FM-3 70 dB. The pin 24 DC output, unmodulated 2.0 2.7 3.5 V SM V FM-4 100 dB. The pin 24 DC output, unmodulated 4.7 5.5 6.2 V SM Muting bandwidth BW-mute 100 dB. The bandwidth when V33 = 2 V, unmodulated 150 220 290 kHz Mute drive output V 100 dB, 0 dB. The pin 33 DC output, unmodulated 0.00 0.03 0.20 V MUTE-100 Continued on next page. No. 6655-2/54