TDA7540B Datasheet, PDF (12/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

Electrical specifications
TDA7540B
Table 5.
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).
Item Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
13.16 R_OUT Output resistance
Multipath Channel Gain
4
kΩ
13.17
13.18
G_min
G_max
Gain minimum
Gain maximum
Multipath Bandpass Filter
MPG=0
MPG=1
12
dB
23
dB
13.19 f_BP19
13.20 f_BP31
13.21 Q
Centre frequency
Centre frequency
Quality factor
MPF=0
MPF=1
19
kHz
31
kHz
5
8
10
Multipath Output
13.22
13.23
13.24
V₂₄
V₂₄
R_OUT
Output voltage low
Output voltage high
Output resistance
14 ISS (intelligent Selectivity System)
0.1
V
4.9
V
2.5
kΩ
Filter 450kHz
14.1 f_centre Centre frequency
14.2 BW 3dB Bandwidth, -3dB
f_{REF_intern} = 450kHz
ISS80 = 1
14.3 BW 20dB Bandwidth, -20dB
ISS80 = 1
14.4 BW 3dB Bandwidth, -3dB
ISS80 = 0
14.5 BW 20dB Bandwidth, -20dB
ISS80 = 0
14.6 BW 3dB Bandwidth weather band ISS30 = 1
14.7 BW 20dB -20dB weather band
ISS30 = 1
Adjacent Channel ISS Filter Threshold
14.8
14.9
14.10
14.11
V_NTH
V_NTH
V_WTH
V_WTH
Internal low threshold
Internal high threshold
Internal low threshold
Internal high threshold
Multipath Threshold
ACNTH
ACNTH
ACWTH
ACWTH
14.12
14.13
V_THMP
V_THMP
Internal low threshold
Internal high threshold
ISS Filter Time Constant
MPTH
MPTH
14.14
14.15
14.16
I₂₇,I₂₈
I₂₇,I₂₈
I₂₇,I₂₈
Charge current low mid TISS, ISSCTL = 1
Charge current high mid TISS, ISSCTL = 1
Charge current low narrow TISS, ISSCTL = 1
450
kHz
80
kHz
150
kHz
120
kHz
250
kHz
30
kHz
80
kHz
0
V
0.3
V
0.25
V
0.95
V
0.50
V
1.25
V
-74
µA
-60
µA
-124
µA
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