TDA7705_10 Datasheet, PDF (23/42 Pages) STMicroelectronics – Highly integrated tuner for AM/FM car radio

TDA7705
Electrical specifications
3.5
3.5.1
Overall system performance
All measurements obtained with application of Figure 16 (FM tuned application / SPI
control) unless otherwise specified.
FM overall system performance
Antenna level equivalence: 0 dBµV = 1 µV_rms (Antenna terminal voltage with 50 Ω source).
Figure 10. FM input set-up
V_{rf + 6dB}
50Ω A
V_rf
50Ω
50Ω
V_{rf + 6dB}
PCB
UNDER
TEST
Input level referred to signal generator loaded with 50 Ω (V_rf, node 'A'); no antenna dummy;
AM input not connected. F_rf = 98.1 MHz, V_rf = 60 dBµV, mono modulation, f_dev = 40 kHz,
f_audio = 1 kHz. De-emphasis = 50 µs. Unless otherwise specified
Table 17. FM overall system performance
Parameter
Test condition
Min
Typ Max Units
Tuning range FM Eu
Tuning step FM Eu
Tuning range FM US
Tuning step FM US
Tuning range FM Jp
Tuning step FM Jp
Tuning range FM EEu
Tuning step FM EEu
Sensitivity
S/N
Ultimate S/N
(can be modified by the user)
(automatic FE alignment
87.5
available)
(can be modified by the user) -
(can be modified by the user)
(automatic FE alignment
87.5
available)
(can be modified by the user) -
(can be modified by the user)
(automatic FE alignment
76
available)
(can be modified by the user) -
(can be modified by the user)
(automatic FE alignment not ⁶⁵
available)
(can be modified by the user) -
S/N =26dB
-
@ 10 dBµV, no highcut, DISS
BW = #3
-
@ 60 dBµV, mono
72
@ 60 dBµV,
Deviation = 75 kHz, mono
78
@ 60 dBµV, stereo
70
-
108 MHz
100
-
kHz
-
107.9 MHz
200
-
kHz
-
90
MHz
100
-
kHz
-
74
MHz
100
-
kHz
-7
-4
dBµV
55
-
dB
75
-
dB
81
-
dB
73
-
dB
Doc ID 15938 Rev 8
23/42