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TDA7540N Datasheet(PDF) 20 Page - STMicroelectronics

No. de pieza TDA7540N
Descripción Electrónicos  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)
PDF  76 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7540N Datasheet(HTML) 20 Page - STMicroelectronics

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Electrical specifications
TDA7540N
20/76
Vpuafs
Pull up voltage for AFS pin
3.1
3.3
3.5
V
Rpuafs
Pull up resistor for AFS pin
25
k
Ω
VTH1
1. threshold for AFS PIN
2.2
2.4
2.6
V
VTH2
2. threshold for AFS PIN
0.6
0.8
1.0
V
Mono/stereo-switch
VPTHST1
Pilot threshold voltage
for Mono->Stereo, PTH = 1
6
10
15
mVrms
VPTHST0
Pilot threshold voltage
for Mono->Stereo, PTH = 0
10
14
19
mVrms
VPTHMO1
Pilot threshold voltage
for Stereo->Mono, PTH = 1
4
8
12
mVrms
VPTHMO0
Pilot threshold voltage
for Stereo->Mono, PTH = 0
7
12
16
mVrms
19kHz PLL
flock
PLL lock range
Pilot magnitude
20 mVrms = 4%
18.9
19.1
kHz
DP
Pilot deviation
Pilot frequency 19kHz
4
30
%
Deemphasis- and highcut
tHC50
Deemphasis time constant
DEEMP = 0, DESFT = 1
VLEVEL >> VHCH
50
μs
tHC75
Deemphasis time constant
DEEMP = 1, DESFT = 1
VLEVEL >> VHCH
75
μs
tHC25
Deemphasis time constant
DEEMP = 0, DESFT = 0
VLEVEL >> VHCH
25
μs
tHC37
Deemphasis time constant
DEEMP = 1, DESFT = 0
VLEVEL >> VHCH
37.5
μs
tHC50
Highcut time constant
DEEMP = 0, DESFT = 1
VLEVEL << VHCL
150
μs
tHC75
Highcut time constant
DEEMP= 1, DESFT = 1
VLEVEL << VHCL
225
μs
FAMCMin
Min. AM corner frequency
DEEMP = 0, DESFT = 1
AMCF
1.06
kHz
FAMCMin
Max. AM corner frequency
DEEMP = 0, DESFT = 1
AMCF
3.18
kHz
Stereoblend- and highcut-control
LGmin
Min. level gain
LG
-0.5
0
0.5
dB
LGmax
Max. level gain
LG
4.0
4.7
5.2
dB
LGstep
Level gain step resolution
LG
0.4
0.67
0.9
dB
Table 8.
Stereodecoder electrical characteristics (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
VMPX = 500mVrms mono, f = 1kHz, deemphasis = 50µs, fXtal = 10.25MHz, in application
circuit, unless otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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