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TDA7541B 数据表(PDF) 20 Page - STMicroelectronics

部件名 TDA7541B
功能描述  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  77 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7541B 数据表(HTML) 20 Page - STMicroelectronics

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Electrical specifications and characteristics
TDA7541B
20/77
Doc ID 16048 Rev 1
27.7
A
channel separation
VMPX = 500 mVrms stereo, only
L/R, ROC adjusted
35
40
-
dB
27.8
THD
Total harmonic distortion
-
-
0.02
0.3
%
27.9
(S+N)/N
Signal plus noise to noise
ratio
A-weighted, 19 kHz notch
-
85
-
dB
28. Mono/stereo switch
28.1
VPTHST1 Pilot threshold voltage
for Stereo, PTH = 1
5
8
12
mVrms
28.2
VPTHST0 Pilot threshold voltage
for Stereo, PTH = 0
7
11
16
mVrms
28.3
VPTHMO1 Pilot threshold voltage
for Mono, PTH = 1
3.5
6
10
mVrms
28.4
VPTHMO0 Pilot threshold voltage
for Mono, PTH = 0
6
9
14
mVrms
29. 19kHz PLL
29.1
flock
Capture range
Pilot magnitude 20 mVrms = 4 %
18.9
-
19.1
kHz
29.2
DP
Pilot deviation range
fpilot = 19 kHz
4
-
30
%
30. De-emphasis and high cut
30.1
tHC50
De-emphasis time
constant
DEEMP=0, High Cut OFF
45
50
55
μs
30.2
tHC75
De-emphasis time
constant
DEEMP = 1, High Cut OFF
67
75
83
μs
30.3
tHC50
High cut time constant
DEEMP = 0, High Cut ON,
V28=0.1V
135
150
165
μs
30.4
tHC75
High cut time constant
DEEMP= 1, High Cut ON,
V28 = 0.1 V
200
225
250
μs
30.5
AAmmin
Min. Attenuation in AM
Voutmax/Vout@ f = 3.5 kHz,
DEEMP = 0, AMCF “111”
-3.6
-
dB
30.6
AAmmax
Max. Attenuation in AM
Voutmax/Vout@ f = 3.5 kHz,
DEEMP= 0, AMCF “000”
-8-
dB
31. Stereo blend and high cut control
31.1
LGmin
Min. level gain
LG
-0.3
0
0.3
dB
31.2
LGmax
Max. level gain
LG
7.75
8.25
8.75
dB
31.3
LGstep
Level gain step Resolution -
0.25
0.55
0.85
dB
31.4
VSBLmin Min. voltage for mono
SBC
24
29
34
%VREF1
31.5
VSBLmax Max. voltage for mono
SBC
53
58
63
%VREF1
31.6
VSBLstep Step resolution
SBC
3.5
4.2
5
%VREF1
31.7
VHCHmin
Min. voltage for no high
cut
HCHT
374247
%VREF1
31.8
VHCHmax
Max.voltage for no high
cut
HCHT
616671
%VREF1
Table 8.
Stereo decoder section (continued)
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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