TDA7540N Datasheet, PDF (15/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

TDA7540N
Electrical specifications
Table 6.
Symbol
FM section electrical characteristics (continued)
(T_amb = 25°C, V_CC1 = V_CC2 = V_CC3 = V_CCST= V_CCVCO = V_CCMIX1 = V_CCMIX2 = V_CCIF1 = 8.5V,
f_RF = 98MHz, dev= 40kHz, f_MOD = 1kHz, f_Xtal = 10.25MHz, in application circuit, unless
otherwise specified).
Parameter
Test conditions
Min. Typ. Max. Unit
Adjacent channel gain
G_min
G_max
f_HP
f_BP
f_-20dB
Gain minimum
Gain maximum
-3dB frequency highpass
Centre frequency
Attenuation 20dB
ACG=0
ACG=1
Adjacent channel filter
ACF=0
ACF=1
Adjacent channel output
32
dB
38
dB
100
kHz
100
kHz
70
kHz
V₂₃
V₂₃
R_OUT
Output voltage low
Output voltage high
Output resistance
Multipath channel gain
0.1
V
4.9
V
3.5
4.5
5.5
kΩ
G_min
G_max
Gain minimum
Gain maximum
f_BP19
f_BP31
Q
Centre frequency
Centre frequency
Quality factor
MPG=0
MPG=1
Multipath bandpass filter
MPF=0
MPF=1
12
dB
23
dB
19
kHz
31
kHz
5
8
10
V₂₄
V₂₄
R_OUT
Output voltage low
Output voltage high
Output resistance
ISS (intelligent Selectivity System)
Multipath output
0.1
V
4.9
V
3
kΩ
Filter 450kHz
f_centre
BW 3dB
Centre frequency
Bandwidth, -3dB
BW 20dB Bandwidth, -20dB
BW 3dB Bandwidth, -3dB
BW 20dB Bandwidth, -20dB
BW 3dB Bandwidth weather band
BW 20dB -20dB weather band
f_{REF_intern} = 450kHz
ISS80 = 1
ISS80 = 1
ISS80 = 0
ISS80 = 0
ISS30 = 1
ISS30 = 1
450
kHz
70
80
90
kHz
132
150
168
kHz
106
120
135
kHz
220
250
280
kHz
20
30
40
kHz
56
80
104 kHz
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