TDA6651TTC1 NXP Semiconductors, TDA6651TTC1 Datasheet - Page 38
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TDA6651TTC1
Manufacturer Part Number
TDA6651TTC1
Description
Manufacturer
NXP Semiconductors
Datasheet
1.TDA6651TTC1.pdf
(54 pages)
Specifications of TDA6651TTC1
Package Type
TSSOP
Lead Free Status / Rohs Status
Compliant
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NXP Semiconductors
TDA6650TT_6651TT_5
Product data sheet
Fig 22. Noise figure (NF) measurement in high band with asymmetrical IF output
Fig 23. Cross modulation measurement in high band with asymmetrical IF output
Fig 24. Cross modulation measurement in high band with symmetrical IF output
e
e
50
50
u
w
Wanted signal source at f
Unwanted output signal at f
The level of unwanted signal is measured by causing 0.3 % AM modulation in the wanted signal.
V’
The level of unwanted signal is measured by causing 0.3 % AM modulation in the wanted signal.
N1 = 10 turns.
N2 = 2 turns.
N1/N2 = 5.
Loss in hybrid = 1 dB.
NF = NF
e
e
50
50
meas
u
w
AM = 30 %
unwanted
wanted
1 kHz
source
source
signal
signal
AM = 30 %
= V
unwanted
wanted
1 kHz
source
source
meas
signal
signal
o
(transformer ratio N1/N2 = 5 and loss)
loss.
A
B
HYBRID
A
B
HYBRID
SOURCE
C
D
NOISE
50
RFpix
C
D
50
snd
.
is 70 dB V.
50
50
50
HYBRID
A
B
A
HYBRID
B
B
A
HYBRID
C
D
Rev. 05 — 10 January 2007
C
D
C
D
HBIN1
HBIN2
HBIN1
HBIN2
DUT
HBIN1
HBIN2
IFOUTA
IFOUTB
DUT
5 V mixer/oscillator and low noise PLL synthesizer
IFOUTA
IFOUTB
DUT
TDA6650TT; TDA6651TT
IFOUTA
IFOUTB
C
V
V
V
CCA
transformer
27
o
N1
o
V
27
voltmeter
CCA
RMS
N2
V
voltmeter
attenuator
RMS
V meas
V
10 dB
attenuator
FIGURE
METER
V'
NOISE
6 dB
meas
fce753
38.9 MHz
FILTER
38.9 MHz
FILTER
© NXP B.V. 2007. All rights reserved.
modulation
analyzer
50
fce754
modulation
analyzer
50
fce794
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