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TDA7546 Datasheet(PDF) 14 Page - STMicroelectronics

No. de pieza TDA7546
Descripción Electrónicos  Multichip module for TMC tuner applications
PDF  68 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7546 Datasheet(HTML) 14 Page - STMicroelectronics

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Electrical specification
TDA7546
14/68
AGC Time Constant Output
V6
Max. AGC output voltage
V3-5 = 0mVRMS
VREF1
+VBE
V
Min. AGC output voltage
V3-5 = 50mVRMS
0.5
V
I6
Min. AGC charge current
V3-5 = 0mVRMS,V10 = 2.5V
-16.5
-12.5
-8.5
μA
Max. AGC discharge current V3-5 = 50mVRMS,V10 = 2.5V
0.9
1.25
1.6
mA
AGC PIN Diode Driver Output
I2
AGC OUT, current min.
V3-5 = 0mVRMS, V2 = 2.5V
9
12
15
μA
AGC OUT, current max.
V3-5 = 50 mVRMS, V2 = 2.5V
-22
-17
-13
mA
I/Q Mixer1 (10.7MHz)
RIN
Input resistance
differential
10
k
Ω
ROUT
Output resistance
differential
100
k
Ω
V3-5
Input dc bias
2.4
2.65
2.9
V
gm
Conversion
transconductance
17
ms
F
Noise figure
400
Ω generator resistance (1)
3dB
CP1dB
1dB compression point
referred to diff. mixer input
100
dB
μV
IIP3
3rd order intermodulation
(1)
122
dB
μV
IQG
I/Q gain adjust
G
-1
+1
%
IQP
I/Q phase adjust
PH
-7
+8
°
IRR
Image rejection ratio
with gain and phase adjust
40
dB
IF1 Amplifier1,2 (10.7MHz)
G1min
Min. gain
IFG, referred to 330
Ω
7.5
9
10.5
dB
G1max
Max. gain
IFG, referred to 330
Ω
13.5
15
16.5
dB
G2min
Min. gain
IFG, referred to 330
Ω
7.5
9
10.5
dB
G2max
Max. gain
IFG, referred to 330
Ω
9.5
11
13.5
dB
RIN
Input resistance
250
330
400
Ω
ROUT
Output resistance
250
330
400
Ω
CP1dB
1dB compression point
referred to 330
Ω input (1)
105
dB
μV
IIP3
3rd order Intermodulation
referred to 330
Ω input (1)
126
dB
μV
Demodulator, Audio Output
THD
Total Harmonic Distortion
dev. = 75kHz, V = Mix2 = 10 mVrms
0.1
%
Table 5.
Tuner (continued)
(Tamb = -40 to +85°C, VCC1 = VCC2 = VCC3 = VCCVCO = VCCMIX1 = VCCIF1=8.5V,
fRF = 98.1MHz, dev. = 40KHz, fMOD = 1KHz, fIF1 = 10.7MHz, fIF2 = 450KHz,
fXtal = 10.25MHz, in application circuit, unless otherwise specified.)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit



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