TUA6036-T Infineon Technologies Corporation, TUA6036-T Datasheet - Page 57

• Manufacturer Part Number: TUA6036-T
• Description: 3-band Digital TV / Set-top-box Tuner IC
• Manufacturer: Infineon Technologies Corporation

4.5.5
Figure 14
4.5.6
Figure 15
•
•
•
•
Specification
Z
V’
wanted output signal at f
unwanted output signal at f
unwanted
signal source
AM = 80 %, 1 kHz
i
meas
>> 50
50
50
Source
= V
wanted
signal
source
Noise
Noise figure (NF) measurement in MID and HIGH bands
Cross modulation measurement in LOW band
0
Noise figure (NF) measurement in MID and HIGH bands
Cross modulation measurement in LOW band
=> V
- 16 dB (transformer ratio N1:N2 and transformer loss)
A
Hybrid
B
i
50
= 2 x V
Voltmeter
loss of balun = 1 dB
NF = NFmeas - loss of balun (dB)
C
D
V
RMS
meas
Balun
1:1
meas
pix
V
V
i
, V
snd
o
= 100 dBµV
50
MIDIN
HIGHIN
MIDIN
HIGHIN
LOWIN
Device
Device
under
under
Test
Test
IFOUT
IFOUT
IFOUT
IFOUT
57
N1 : N2 = 10 : 2 turns
N1 : N2 = 10 : 2 turns
V
0
Transformer
Transformer
C
C
N1
N1
N2
N2
Votmeter
TUA6034, TUA6036
attenuator
RMS
V
18 dB
V'
meas
V 2.5, 2004-04-28
38.9 MHz
modulation
Figure
Noise
Meter
analyser
Reference
50