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TDA7407 Datasheet(PDF) 16 Page - STMicroelectronics

Part # TDA7407
Description  Advanced car signal processor
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7407 Datasheet(HTML) 16 Page - STMicroelectronics

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Stereo decoder part
TDA7407
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3.1
Notes to the characteristics:
1.
Intermodulation suppression:
; fs = (2 x 10kHz) - 19kHz
; fs = (3 x 13kHz) - 38kHz
measured with: 91% pilot signal; fm = 10kHz or 13kHz.
2.
Traffic radio (V.F.) suppression: measured with: 91% stereo signal;
9% pilot signal; fm = 1kHz; 5% subcarrier (f = 57kHz, fm = 23Hz AM, m = 60%)
3.
SCA (Subsidiary Communications Authorization) measured with: 81% mono signal;
9% pilot signal; fm = 1kHz; 10% SCA - subcarrier (fs = 67kHz, unmodulated).
; Fs =(2 x 38kHz) - 67kHz
4.
ACI (Adjacent Channel Interference):
; Fs = 110kHz - (3 x 38kHz)
; Fs = 186kHz - (5 x 38kHz)
measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal
(fs = 110kHz or 186kHz, unmodulated).
α2
V
O signal
() at1kHz
()
V
O spurious
() at1kHz
()
--------------------------------------------------------
=
α3
V
O signal
() at1kHz
()
V
O spurious
() at1kHz
()
--------------------------------------------------------
=
α57 V.W > F.
()
V
O signal
() at1kHz
()
V
O spurious
() at1kHz 23kHz
±
()
----------------------------------------------------------------------------
=
α67
V
O signal
() at1kHz
()
V
O spurious
() at9kHz
()
--------------------------------------------------------
=
α114
V
O signal
() at1kHz
()
V
O spurious
() at4kHz
()
--------------------------------------------------------
=
α114
V
O signal
() at1kHz
()
V
O spurious
() at4kHz
()
--------------------------------------------------------
=



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