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TDA7705 Datenblatt(PDF) 27 Page - STMicroelectronics

Teilenummer TDA7705
Bauteilbeschribung  Highly integrated tuner for AM/FM car radio
PDF  42 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7705 Datenblatt(HTML) 27 Page - STMicroelectronics

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TDA7705
Electrical specifications
Doc ID 15938 Rev 9
27/42
3.5.3
AM LW overall system performance
Antenna level equivalence: 0 dBµV = 1 µVrms
Figure 12.
AM LW input set-up
Level referred to SG output before antenna dummy (Vrf, node 'A'); capacitive dummy
15pF+68pF; FM input not connected. Frf = 216 kHz, Vrf =74 dBµV, mod = 30 %,
faudio = 400 Hz, unless otherwise specified.
Table 19.
AM LW overall system performance
Parameter
Test condition
Min
Typ
Max
Units
Tuning range LW
(can be modified by the user)
144
-
288
kHz
Tuning step LW
(can be modified by the user)
-
1
-
kHz
Sensitivity
S/N =20 dB
-
30
33
dBµV
Ultimate S/N
@ 80 dBµV
63
66
-
dB
AGC F.O.M.
Ref.=74 dBµV
-10dB drop point
50
62
65
dB
Distortion
m = 80 %
-
0.1
-
%
Image rejection
-
-
80
-
dB
PCB
UNDER
TEST
30
Ω
Vrf + 6dB
Vrf
50
Ω
50
Ω
15pF
68pF
A



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