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ST7536 数据表(PDF) 8 Page - STMicroelectronics |
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ST7536 数据表(HTML) 8 Page - STMicroelectronics |
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8 / 9 page ![]() 20 10 0 -10 -20 -30 -40 -50 0 0.5 1 1.5 2 B Frequency (f/fc) B = 20kHz at 600 Bit/s (BRS = 0) B = 40kHz at 1200 Bit/s -BRS = 1) fc : Central Carrier Frequency S S/N (dB) Figure 5 : S/N Mask for 80% AM Sine Noise FILTER TEMPLATES Frequency (kHz) Test Conditions Amplitude (dB) Min. Typ. Max. RECEIVE AND TRANSMIT FILTER 54 BRS = 0, CHS = 0 -35 79.05 - 4 - 3 - 2 Ref 82.05 0 85.05 - 4 - 3 - 2 123 - 35 44.4 BRS = 0, CHS = 1 -35 65 -4 -3 -2 Ref 67.46 0 69.93 - 4 - 3 - 2 101.13 - 35 47.57 BRS = 1, CHS = 0 -35 69.64 - 4 - 3 - 2 Ref 72.28 0 74.92 - 4 - 3 - 2 108.36 - 35 57.08 BRS = 1, CHS = 1 -35 83.57 - 4 - 3 - 2 Ref 86.74 0 89.91 - 4 - 3 - 2 130.03 - 35 Frequency (kHz) Test Conditions Amplitude (dB) Min. Typ. Max. INTERMEDIATE FREQUENCY FILTER 1.2 BRS = 0 -35 2.15 - 5 - 3 - 2 Ref 2.7 0 3.25 - 5 - 3 - 2 5.8 - 35 2.4 BRS = 1 -35 4.3 -5 -3 - 2 Ref 5.4 0 6.5 -5 -3 - 2 11.6 - 35 ST7536 8/9 |
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