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TDA1579T Scheda tecnica(PDF) 9 Page - NXP Semiconductors |
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TDA1579T Scheda tecnica(HTML) 9 Page - NXP Semiconductors |
9 / 13 page May 1992 9 Philips Semiconductors Product specification Decoder for traffic warning (VWF) radio transmissions TDA1579 TDA1579T FILTER INFORMATION Gain Amplifier conditions: Go >> Gv and Go >> 2 ⋅ Q2 , in which p = j ω and Gv =. Recommended components GENERAL EQUATION C1 = C2 = C C1 = C2 = C R2 < < R1 Resonance frequency ωr = Gain at ω = ω r −Gvr = Quality Q= C1, C2 metallized polycarbonate film (MKC) capacitors; ± 5% and R1, R2, R3 metal film (MR) resistors; ± 2% or C1, C2 metallized polyester film (MKT) capacitors; ± 5% and R1, R2, R3 carbon film (CR) resistors; ± 2% G v p R1 C1 ⋅ -------------------- p 2 p C1 C2 + R3 C1 C2 ⋅⋅ --------------------------------- R1 R2 + R1 R2 R3 C1 C2 ⋅⋅⋅⋅ ---------------------------------------------------------- ++ ------------------------------------------------------------------------------------------------------------------- – = V o V i ------ 1 R1 R2 ⋅ R1 R2 + ---------------------- R3 C1 C2 ⋅⋅⋅ ----------------------------------------------------------------- 1 C R1 R2 ⋅ R1 R2 + ---------------------- R3 ⋅ -------------------------------------------- 1 CR2 R3 ⋅ ----------------------------- C2 C1 C2 + ---------------------- R3 R1 -------- ⋅ 1 2 --- R3 R1 -------- ⋅ 1 2 --- R3 R1 -------- ⋅ C1 C2 ⋅ C1 C2 + ------------------------ R3 R1 R2 + () R1 R2 ⋅ -------------------------------------- ⋅ 1 2 --- R3 R1 R2 + () R1 R2 ⋅ -------------------------------------- 1 2 --- R3 R2 -------- ⋅ |
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