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TDA7541 数据表(PDF) 14 Page - STMicroelectronics

部件名 TDA7541
功能描述  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  76 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7541 数据表(HTML) 14 Page - STMicroelectronics

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Electrical specifications and characteristics
TDA7541
14/76
12.5
(S+N)/N
Signal plus noise-to-noise
ratio
In weatherband mode
Δf=1.5KHz, f
mod =1KHz, V56
=100dBµ,
Deemphasis=75µs, setting see
Table 10
40
dB
13. Quality detection
Unweighted field strength (FSU) and weighted field strength
13.1
V37
DC output voltage
V56 = 20 dBμV, FMON=1,
FSWO = OFF
2.5
V
13.2
V37
DC output voltage
V56 = 50 dBμV, FMON=1,
FSWO = OFF
3V
13.3
V37
DC output voltage
V56 = 70 dBμV, FMON=1,
FSWO = OFF
3.5
V
13.4
V37
DC output voltage
V56 > 120 dBμV, FMON=1,
FSWO = OFF
4.6
V
13.5
ΔV37
Slope
25
mV/dB
13.6
ΔV37
DC offset
-200
0
mV
13.7
ROUT
Output impedance
FSWO
17
23.5
30
k
Ω
13.8
V27
DC output voltage
V56 = 20 dBμV, FMON=1,
SL=”101”
0.1
0.4
V
13.9
V27
DC output voltage
V56 = 50 dBμV, FMON=1,
SL=”101”
1V
13.10
V27
DC output voltage
V56 = 70 dBμV, FMON=1,
SL=”101”
2V
13.11
V27
DC output voltage
V56 > 120 dBμV, FMON=1,
SL=”101”
4V
13.12
ΔV
27
Slope
50
mV/dB
13.13
ROUT
Output impedance
FSU
320
400
480
Ω
13.14
Rload
Load resistor
FSU
20
k
Ω
13.15
V27
DC output voltage AM
V47 = 20 dBμV, FMON = 0,
SL= ”010”
0.1
0.3
V
13.16
V27
DC output voltage AM
V47 = 40 dBμV, FMON = 0,
SL= ”010”
1.25
V
13.17
V27
DC output voltage AM
V47 = 60 dBμV, FMON = 0,
SL= ”010”
3.0
V
13.18
V27
DC output voltage AM
V47 > 100 dBμV, FMON = 0,
SL= ”010”
4.5
V
13.19
ΔV
27
Slope AM
FMON=0
90
mV/dB
Table 6.
FM section (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCCMIX1 = VCCVCO = VCCIF = 8.5V, fXtal = 10.25 MHz,
fRF = 98MHz, dev = 40 kHz, fMod = 1 kHz, in application circuit, unless otherwise specified)
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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