TDA3857 查看數據表（PDF） - Philips Electronics
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TDA3857 Datasheet PDF : 14 Pages
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Philips Semiconductors
Quasi-split sound processor with two FM demodulators
Product specification
TDA3857
(1) CP = 47 pF with optional use of tracking
(because of Co of the varicaps).
Fig.3 Test and application circuit for standard B/G (for application SAW-filters must be used).
(1) simple resonant circuit
(2) resonant circuit with CP = 68 pF
CS = CP (fVC/fSC)2 − CP
CS = 27 pF (see Fig.3)
Fig.4 Frequency response of the 38.9 MHz reference circuit.
June 1994
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