TDA7541B Datasheet, PDF (16/77 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Electrical specifications and characteristics
TDA7541B
Table 6. FM section (continued)
Item Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
14.17 I_30,31 Discharge current high
14.18 V_30,31 Low voltage
14.19 V_30,31 High voltage
ISS filter switch threshold
TISS, BWDEF = 0
BWDEF = 0
BWDEF = 1
14.20 V_30,31 Threshold ISS on
14.21 V_30,31 Threshold ISS off
14.22 V_30,31 Threshold ISS narrow on
14.23 V_30,31 Threshold ISS narrow off
Deviation detection
BWDEF = 0
BWDEF = 0
BWDEF = 0
BWDEF = 0
14.24
I₃
Charge current low
14.25
I₃
Charge current high
14.26
I₃
Discharge current low
14.27
I₃
Discharge current high
14.28 DEV_WTH Internal low threshold
14.29 DEV_WTH Internal high threshold
14.30 RATIO_min Referred to threshold
14.31 RATIO_max Referred to threshold
TDEV
TDEV
TDEV
TDEV
DWTH, I₃ = 1 µA
DWTH, I₃ = 1 µA
DTH
DTH
15. Weak signal mute
11
15
19
µA
-
0.1
0.2
V
4.6 4.9
-
V
-
3
-
V
-
1
-
V
-
4
-
V
-
2
-
V
-40 -32 -20 µA
-48 -39 -30 µA
0.5
1
1.5 µA
5.5
8
10.5 µA
-
20
-
kHz
-
50
-
kHz
-
1
-
-
1.5
-
15.1
V₃₇ Upper start point
WMTH = 0, WMD = 7, V_IN=V₅₆,
AF = -3 dB
-
2.9
-
V
15.2
V₃₇ Lower start point
WMTH = 7, WMD = 7, V_IN=V₅₆,
AF = -3 dB
-
2.7
-
V
15.3 a_WMD Min. mute depth
WMD = 0, WMTH = 7, V₅₆ =OFF 10
14
15.4 a_WMD Max. mute depth
WMD = 7, WMTH = 7, V₅₆=OFF 22
26
15.5
a_MTHISS
Mute threshold below
WMTH for ISS filter “ON”
WMD, WMTH, V_IN=V₅₆
-
1
-
dB
-
dB
-
dB
15.6
V_ACMTH
Internal AC mute
threshold
ACMTH
40
-
260 mV
15.7 a_ACMD AC mute depth
15.8
I₄₂ Charge current
15.9
I₄₂ Discharge current
ACMD
-
-
3
-
8
dB
-65 -47.5 -30 μA
1.5 2.5
4
μA
16. Multiplexer output
16.1
V₂₃ Output voltage low
-
16.2
V₂₃ Output voltage high
-
16.3 R_OUT Output resistance
-
16.4 R_23load Load resistor
-
-
0.1
0.2
V
4.6 4.9
-
V
200 250 300 Ω
20
-
-
kΩ
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Doc ID 16048 Rev 1