TUA6045 INFINEON [Infineon Technologies AG], TUA6045 Datasheet - Page 59

• Manufacturer Part Number: TUA6045
• Description: Low Power 3-Band Digital TV / Portable Tuner IC
• Manufacturer: INFINEON [Infineon Technologies AG]

5.6
5.6.1
Figure 9
•
•
•
•
5.6.2
Figure 10
•
•
•
Data Sheet
Z
V
V
G
V
V
G
i
i
0
i
0
v
v
>> 50
= V
= V
50
= V’
= V’
= 20 log(V
= 20 log(V
Voltmeter
50
meas
meas
Voltmeter
V
meas
meas
RMS
meas
Measurement Circuits
Gain (G
Gain (G
V
RMS
meas
+ 6dB = 80 dBµV
= 70 dBµV
Gain (G
Gain (G
=> V
+ 17 dB (transformer ratio N1:N2 and transformer loss)
+ 17 dB (transformer ratio N1:N2 and transformer loss
V
0
0
V
/ V
/ V
i
= 2 x V
V
V
i
i
)
) + 1 dB (1 dB = insertion loss of balun)
) measurement in LOW band
) measurement in MID and HIGH bands
50
V
V
50
) measurement in LOW band
) measurement in MID and HIGH bands
V
V
meas
i
i
Balun
= 80 dBµV
1:1
LOWIN
Device
under
Test
SAWOUT
SAWOUT
MIDIN
HIGHIN
MIDIN
HIGHIN
Device
59
under
Test
SAWOUT
SAWOUT
N1 : N2 = 10 : 2 turns
V
0
Transformer
N1 : N2 = 10 : 2 turns
V
C
0
N1
Transformer
N2
C
N1
Revision 3.1, 2006-12-19
N2
V'
meas
V'
meas
TUA 6045-2
TAIFUN 3
50
spectrum
analyser
Reference
50
spectrum
analyser