TDA7705 Datasheet, PDF (28/42 Pages) STMicroelectronics – Single 5 V supply

Electrical specifications
3.5.4
AM SW overall system performance
Antenna level equivalence: 0dBµV = 1µV_rms
Figure 13. AM SW input set-up
V_{rf + 6dB}
50Ω A
V_rf
15pF _30Ω
50Ω
68pF
TDA7705
PCB
UNDER
TEST
Level referred to SG output before antenna dummy (V_rf, node 'A'); capacitive dummy
15pF+68pF; FM input not connected. F_rf = 6000 kHz, V_rf =74 dBµV, mod = 30 %,
f_audio = 400 Hz, unless otherwise specified.
Table 20. AM SW overall system performance
Parameter
Test condition
Tuning range LW
(can be modified by the user)
Tuning step LW
(can be modified by the user)
Sensitivity
S/N =20dB
Ultimate S/N
@ 80 dBµV
AGC F.O.M.
Distortion
Ref.=74 dBµV -10dB drop point
m = 80 %
Image rejection
-
Min
2300
-
-
63
50
-
-
Typ Max Units
- 30000 kHz
1
-
kHz
29
32 dBµV
66
-
dB
62
65
dB
0.3
-
%
80
-
dB
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Doc ID 15938 Rev 9