參數資料
型號: TEA6100
文件頁數: 23/27頁
文件大?。?/td> 513K
代理商: TEA6100
August 1987
23
Philips Semiconductors
Product specification
FM/IF system and microcomputer-based
tuning interface
TEA6100
Double tuned circuit
Fig.19 Double tuned demodulator circuit.
R1 = 5,1 k
, R2 = 1,5 k
C1 = C2 = 150 pF (n = 220)
C3 = C4 = 10 pF
L1 = L2 = 1,6
μ
H
Alignment of the circuit is obtained with an IF input signal > 200
μ
V. Tuning the circuit is performed by, detuning L2,
adjusting L1 to obtain a minimum distortion level and then adjusting L2 to obtain a minimum distortion level.
Fig.20 Total harmonic distortion plotted against IF detuning; for
f =
±
75 kHz, f
mod
= 1 kHz and V
O
= 500 mV.
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