TDA7546TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7546TR Datasheet PDF : 68 Pages
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Electrical specification
TDA7546
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
AGC Time Constant Output
Max. AGC output voltage
V3-5 = 0mVRMS
V6
Min. AGC output voltage
V3-5 = 50mVRMS
Min. AGC charge current
V3-5 = 0mVRMS,V10 = 2.5V
I6
Max. AGC discharge current V3-5 = 50mVRMS,V10 = 2.5V
AGC PIN Diode Driver Output
-16.5
0.9
AGC OUT, current min.
V3-5 = 0mVRMS, V2 = 2.5V
9
I2
AGC OUT, current max.
V3-5 = 50 mVRMS, V2 = 2.5V
-22
I/Q Mixer1 (10.7MHz)
RIN
ROUT
V3-5
gm
F
Input resistance
Output resistance
Input dc bias
Conversion
transconductance
Noise figure
differential
differential
100
2.4
400Ω generator resistance (1)
CP1dB
IIP3
1dB compression point
3rd order intermodulation
referred to diff. mixer input
(1)
IQG I/Q gain adjust
G
-1
IQP I/Q phase adjust
PH
-7
IRR Image rejection ratio
with gain and phase adjust
40
IF1 Amplifier1,2 (10.7MHz)
G1min Min. gain
IFG, referred to 330Ω
7.5
G1max Max. gain
IFG, referred to 330Ω
13.5
G2min Min. gain
IFG, referred to 330Ω
7.5
G2max Max. gain
IFG, referred to 330Ω
9.5
RIN Input resistance
250
ROUT Output resistance
250
CP1dB 1dB compression point
referred to 330Ω input (1)
IIP3 3rd order Intermodulation referred to 330Ω input (1)
Demodulator, Audio Output
THD Total Harmonic Distortion dev. = 75kHz, V = Mix2 = 10 mVrms
VREF1
+VBE
V
0.5
V
-12.5 -8.5 μA
1.25 1.6 mA
12
15
μA
-17
-13
mA
10
kΩ
kΩ
2.65 2.9
V
17
ms
3
dB
100
dBμV
122
dBμV
+1
%
+8
°
dB
9
10.5 dB
15 16.5 dB
9
10.5 dB
11 13.5 dB
330 400
Ω
330 400
Ω
105
dBμV
126
dBμV
0.1
%
14/68
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