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TDA7338D 데이터시트(PDF) 8 Page - STMicroelectronics |
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TDA7338D 데이터시트(HTML) 8 Page - STMicroelectronics |
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8 / 11 page ![]() 2.2V TRIG. THRESHOLD 0.9V VPEAK E’ D95AU370 MONO STEREO noisy signal good signal ATC_SB OFF (PROG=VS) NOISE ≈3V Figure 5: Behaviour of the Field Strength Controlled Threshold Adiustment 100K 68K 33K 470nF 10K 680pF MONO MPX 4) VR 17 19 20 PILOT_IND 18 16 15 SIGNAL STRENGTH 47K 47K 47K 1) 68K 1) 100K 100K VCO_OFF (FM ENABLE) 330pF 7 10K 10K MUTE 47nF 24 456KHz 3 5 VS 9V 100nF 10 µF 1nF 2) 1nF 2) 13 14 12 11 IN R OUT 9 10 IN L OUT 47K 47K 56pF 3) 56pF 3) 6 LEVEL (SIGNAL STRENGTH) D95AU371A TDA7338 1) has to be adapted to the signal strength 2) for deemphasis = 50 µs 3) not absolutely necessary 4) roll off: to be adjusted to the tuner part 1 Figure 6: Application Diagram TDA7338 8/11 |
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