TUA6036-T Infineon Technologies Corporation, TUA6036-T Datasheet - Page 58

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

4.5.7
Figure 16
•
•
•
4.5.8
Figure 17
Specification
unwanted
signal source
AM = 80 %, 1 kHz
V’
wanted output signal at f
unwanted output signal at f
meas
50
50
wanted
signal
source
= V
Cross modulation measurement in MID and HIGH bands
Ripple susceptibility measurement
0
A
Hybrid
B
Cross modulation measurement in MID and HIGH bands
Ripple susceptibility measurement
- 16 dB (transformer ratio N1:N2 and transformer loss)
500 kHz sine
50
C
D
Voltmeter
V
RMS
meas
V
i
V
Balun
pix
1:1
50
, V
Circuit to superimpose a 500 kHz ripple on V
snd
o
V
50
ripple
= 100 dBµV
MIDIN
HIGHIN
MIDIN
HIGHIN
Device
under
Test
50
10 µF
6k8
IFOUT
IFOUT
58
N1 : N2 = 10 : 2 turns
V
0
V
10 µF
BC847B
CC
V
supply
+ V
Transformer
ripple
C
N1
to application
board
CC
N2
TUA6034, TUA6036
Votmeter
attenuator
RMS
V
18 dB
V'
meas
V 2.5, 2004-04-28
38.9 MHz
modulation
analyser
Reference
50