TDA7541B Datasheet, PDF (14/77 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Electrical specifications and characteristics
Table 6. FM section (continued)
Item Symbol
Parameter
Test conditions
Δf = 40 kHz, f_mod =1 kHz,
V₅₆ =100 dBµV,
12.6
(S+N)/N
Signal plus noise-to-noise _{De-emphasis = 50 µs,}
ratio at MPXOUT
B = 200 Hz to 15 kHz
ISSENA = 0
12.7
(S+N)/N
Signal plus noise-to-noise
ratio
Δf = 3.5 kHz, f_mod =1 kHz,
V₅₆ =100 dBµV,
In weatherband mode
De-emphasis = 75 µs,
setting see Table 10
13. Quality detection
Unweighted field strength (FSU) and weighted field strength
13.1
V₃₇ DC output voltage
V₅₆ = 20 dBμV, FMON=1,
FSWO = OFF
13.2
V₃₇ DC output voltage
V₅₆ = 50 dBμV, FMON=1,
FSWO = OFF
13.3
V₃₇ DC output voltage
V₅₆ = 70 dBμV, FMON=1,
FSWO = OFF
13.4
V₃₇ DC output voltage
V₅₆ > 120 dBμV, FMON=1,
FSWO = OFF
13.5
13.6
13.7
ΔV₃₇
ΔV₃₇
R_OUT
Slope
DC offset
Output impedance
13.8
V₂₇ DC output voltage
-
-
FSWO
V₅₆ = 20 dBμV, FMON=1,
SL=”101”
13.9
V₂₇ DC output voltage
V₅₆ = 50 dBμV, FMON=1,
SL=”101”
13.10 V₂₇ DC output voltage
V₅₆ = 70 dBμV, FMON=1,
SL=”101”
13.11 V₂₇ DC output voltage
V₅₆ > 120 dBμV, FMON=1,
SL=”101”
13.12
13.13
13.14
13.15
ΔV₂₇
R_OUT
R_load
V₂₇
Slope
Output impedance
Load resistor
DC output voltage AM
-
FSU
FSU
V₄₇ = 20 dBμV, FMON = 0,
SL= ”010”
13.16 V₂₇ DC output voltage AM
V₄₇ = 40 dBμV, FMON = 0,
SL= ”010”
13.17 V₂₇ DC output voltage AM
V₄₇ = 60 dBμV, FMON = 0,
SL= ”010”
13.18 V₂₇ DC output voltage AM
V₄₇ > 100 dBμV, FMON = 0,
SL= ”010”
TDA7541B
Min. Typ. Max. Unit
70
-
-
dB
40
-
-
dB
-
2.5
-
V
-
3
-
V
-
3.5
-
V
-
4.6
-
25
-200
-
17 23.5
-
0.1
-
V
- mV/dB
0
mV
30 kΩ
0.4
V
-
1
-
V
-
2
-
V
4
-
-
50
320 400
-
20
-
0.1
-
V
- mV/dB
480 Ω
-
kΩ
0.3
V
-
1.25
-
V
-
3.0
-
V
4.5
-
-
V
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Doc ID 16048 Rev 1