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TDA7541B Datasheet(PDF) 17 Page - STMicroelectronics

Part # TDA7541B
Description  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7541B Datasheet(HTML) 17 Page - STMicroelectronics

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TDA7541B
Electrical specifications and characteristics
Doc ID 16048 Rev 1
17/77
3.3.3
AM section
Tamb = 25 °C, VCC1 = VCC2 = VCCMIX1 = VCCVCO = VCCIF = 8.5 V, fXtal = 10.25 MHz,
fRF = 1 MHz, m = 30%, fmod = 1 kHz, in application circuit, unless otherwise specified.
Table 7.
AM section
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
17. Global
17.1
VANT_US Usable sensitivity
(1)
(S+N)/N = 26 dB
-
19
25
dBµV
17.2
(S+N)/N
Signal to Noise Ratio
Ref.: V3 = 80 dBµV
50
55
-
dB
17.3
aIF
IF1 rejection
S/N = 26 dB, m = 30 %, fmod = 1 kHz
70
80
-
dB
17.4
V3
Min. RF AGC threshold
RFAGC
-
92
-
dBµV
17.5
V3
Max. RF AGC threshold
-
104
-
dBµV
17.6
V61
Min. IF AGC threshold
IFAGC
-
78
-
dBµV
17.7
V61
Max. IF AGC threshold
-
102
-
dBµV
17.8
V56
Min. DAGC threshold
DAGC
-
86
-
dBµV
17.9
V56
Max. DAGC threshold
-
98
-
dBµV
18. AGC voltage driver output
18.1
V4
Max. AGC output voltage
-
3.3
3.5
-
V
18.2
V4
Min. AGC output voltage
-
-
-
0.5
V
18.3
| I4 |
AGC current
V4 = 0 V, V54 = 3.5 V, LNA”00”
-
340
-
µA
19. AGC PIN diode driver output
19.1
I7
AGC driver current
-
-
-
-15
mA
20. AM Mixer1 (10.7 MHz)
20.1
RIN
Input resistance
differential
45
-
-
k
Ω
20.2
CIN
Input capacitance
differential
-
2.5
-
pF
20.3
ROUT
Output impedance
-
530
660
790
Ω
20.4
CP1dB
1dB compression point
referred to diff. mixer input
-
112
-
dB
μV
20.5
V3,6
Input DC bias
-
0.3
0.4
0.55
V
20.6
IIP3
3rd order intermodulation
-
-
132
-
dB
μV
20.7
INOISE
Equivalent input noise
-
-
5.5
-
nV/
√Hz
20.8
G
Gain
With 330
Ω filter
35.5
7
dB
21. AM mixer2
21.1
RIN
Input resistance
-
240
300
360
Ω
21.2
CIN
Input capacitance
-
-
2.5
-
pF
21.3
V55.56
DC input voltage
-
3.8
4
4.2
V
21.4
ROUT
Output resistance
-
100
-
-
k
Ω



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