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TDA7540B bảng dữ liệu(PDF) 20 Page - STMicroelectronics

tên linh kiện TDA7540B
Giải thích chi tiết về linh kiện  AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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TDA7540B bảng dữ liệu(HTML) 20 Page - STMicroelectronics

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Electrical specifications
TDA7540B
20/75
1. Intermodulation Suppression
a2 = VO(signal,@1KHz) / VO(spurious, @1KHz) ; fs = (2x10KHz) - 19KHz
a3 = VO(signal,@1KHz) / VO(spurious, @1KHz) ; fs = (3x13KHz) - 38KHz
measured with: 91% stereo signal; 9% pilot signal; fm = 10kHz or 13kHz.
2. Traffic Radio (V.F.) Suppression
a57(V,W,F) = VO(signal,@1KHz) / VO(spurious, @1KHz+/-23KHz)
measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% sub carrier (f=57kHz,
fm=23Hz AM, m=60%)
3. SCA ( Subsidiary Communications Authorization )
a67 = VO(signal,@1KHz) / VO(spurious, @9KHz) ; fs = (2x38KHz) - 67KHz
measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA – sub carrier ( fS =
67kHz, unmodulated ).
4. ACI ( Adjacent Channel Interference )
a114 = VO(signal,@1KHz) / VO(spurious, @4KHz) ; fs = 110KHz - (3x38KHz)
a190 = VO(signal,@1KHz) / VO(spurious, @4KHz) ; fs = 186KHz - (5x38KHz)
measured with: 90% mono signal; 9% pilot signal; fm=1kHz; 1% spurious signal ( fS =
110kHz or 186kHz, unmodulated).
0) All thresholds are measured inTestmode at the quality output. The thresholds are
calculated by
VNBTH - VPEAK
VPEAK is adjusted by applying a 150kHz sinewave at MPXIN.



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