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FM1246 数据表(PDF) 9 Page - NXP Semiconductors |
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FM1246 数据表(HTML) 9 Page - NXP Semiconductors |
9 / 24 page 1997 May 14 9 Philips Components Preliminary specification Desktop video & FM radio module system CCIR I FM1246 Definitions of test signals (see Fig.2) Aerial input characteristics TEST SIGNAL FREQ. (MHz) AMPLITUDE MODULATION VIDEO AUDIO A0: unmodulated vision carrier 480.25 60 dB µV A1: CCIR I standard signal with video modulation 480.25 60 dB µV (top sync) 100% (rest carrier 10%) 2T pulse and bar B1: unmodulated sound carrier I system 486.25 −7 dB w.r.t. A1 B2: FM modulated sound carrier I system 486.25 −7 dB w.r.t. A1 1 kHz; modulation frequency deviation ±27 kHz; 50 µs pre-emphasis B3: unmodulated sound carrier I system 478.25 −15 dB w.r.t. A1 C1: FM modulated sound carrier 87.5 60 dB µV 1 kHz; modulation frequency deviation ±75 kHz; 10% pilot carrier (L = R) C2: FM modulated sound carrier 98.0 60 dB µV 1 kHz; modulation frequency deviation ±75 kHz; 10% pilot carrier (L = R) C3: FM modulated sound carrier 108.0 60 dB µV 1 kHz; modulation frequency deviation ±75 kHz; 10% pilot carrier (L = R) C4: FM modulated sound carrier 98.0 60 dB µV 1 kHz; modulation frequency deviation ±22.5 kHz C5: unmodulated sound carrier 98.0 60 to 100 dB µV SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VSWR reflection coefficient referred to 75 Ω impedance (worst case on or between picture and sound carrier at maximum gain): all channels in TV mode − 5 FM (centre of channel) − 4 VPSM surge protection voltage 5 − kV Vant antenna connection disturbance voltage <1.75 GHz − 46 dB µV |
类似零件编号 - FM1246 |
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类似说明 - FM1246 |
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