tda6508 NXP Semiconductors, tda6508 Datasheet - Page 28
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tda6508
Manufacturer Part Number
tda6508
Description
3-band Mixer/oscillator And Pll For Terrestrial Tuners
Manufacturer
NXP Semiconductors
Datasheet
1.TDA6508.pdf
(42 pages)
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Quantity
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tda6508TT
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PHILIPS
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44
Philips Semiconductors
2005 Mar 25
handbook, full pagewidth
3-band mixer/oscillator and PLL for
terrestrial tuners
Hybrid loss = 1 dB.
V
V
G
PAL f
Hybrid loss = 1 dB.
NF = NF
i
o
v
= V
= V
= 20 log
IF
i(meas)
o(meas)
= 36.15 MHz.
meas
V
----- -
V
+ 3.75 dB.
loss = 70 dB V.
o
i
hybrid loss.
e
Fig.23 Noise figure measurement in the HIGH-band of the TDA6508; TDA6509.
50
Fig.22 Gain measurement in the HIGH-band of the TDA6508A; TDA6509A.
V i(meas)
SOURCE
NOISE
signal
source
voltmeter
50
V
RMS
50
50
A
B
HYBRID
C
D
B
A
HYBRID
C
D
HIGH_RFIN1
HIGH_RFIN2
IFAMP_OUT1
IFAMP_OUT2
D.U.T.
28
V i
HIGH_RFIN1
HIGH_RFIN2
IFAMP_OUT1
D.U.T.
turns
2 x 5
N1/N2 = 5
V o
2
turns
TDA6508; TDA6508A;
V o(meas)
TDA6509; TDA6509A
27
METER
NOISE
mdb255
spectrum
analyzer
50
MDB258
Product specification