поискавой системы для электроныых деталей |
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TDA7420 датащи(PDF) 8 Page - STMicroelectronics |
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TDA7420 датащи(HTML) 8 Page - STMicroelectronics |
8 / 29 page NOTES TO THE CHARACTERISTICS 1 INTERMODULATION SUPPRESSION α2 = VO (signal)(at1KHz) VO (spurious)(at1KHZ) ;fs = (2 x 10KHz) - 19KHz α3 = VO (signal)(at1KHz) VO (spurious)(at1KHZ) ;fs = (3 x 13KHz) - 38KHz measured with : 91% mono signal; 9% pilot signal; fm=10KHz or 13KHz. 2. TRAFFIC RADIO (V.F.) suppression α57 (V.W.F.)= VO(signal) (at1KHz) VO (spurious)(at1KHZ ±23Hz) measured with : 91% stereo signal; 9% pilot signal; fm=1KHz; 5% subcarrier (f=57KHz, fm = 23Hz AM, m = 60%) 3. SCA (SUBSIDIARY COMMUNICATIONS AUTHORIZATION) α67 = VO(signal) (at1KHz) VO (spurious)(at9KHZ) ;fs = (2 x 38KHz) - 67KHz measured with : 81% mono signal; 9% pilot signal; fm=1KHz; 10% SCA - subcarrier (fs = 67KHz, unmodulated). 4. ACI (ADJACENT CHANNEL INTERFERENCE) α114 = VO(signal) (at1KHz) VO (spurious)(at4KHZ) ;fs = 110KHz - (3 x 38KHz) α190 = VO(signal) (at1KHz) VO (spurious)(at4KHZ) ;fs = 186KHz - (5 x 38KHz) - measured with 90% mono signal; 9% pilot signal; fm = 1KHz; 1% spurious signal (fs = 110KHz or 186KHz, unmodulated). 5: Control range for High Cut Control and Stereo Blend is VR - 400mV ≤ VSB,VHCC ≤VR -500 -400 -300 -200 -100 0 VHCC-VR 0 1 2 3 fc (KHz) D94AU183 Figure : High Cut Control -400 -300 -200 -100 VSB -VR 0 10 20 30 40 SEP (dB) D94AU184 Figure : Stereo Blend TDA7420 8/29 |
Аналогичный номер детали - TDA7420 |
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Аналогичное описание - TDA7420 |
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