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參數(shù)資料
| 型號(hào)： | TDA6509TT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 3-band mixer/oscillator and PLL for terrestrial tuners |
| 中文描述： | 3-BAND, VIDEO TUNER, PDSO32 |
| 封裝： | 6.10 MM, 0.65 MM PITCH, PLASTIC, MO-153, SOT487-1, TSSOP-32 |
| 文件頁(yè)數(shù)： | 27/42頁(yè) |
| 文件大?。?/td> | 274K |
| 代理商： | TDA6509TT |
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2005 Mar 25
27
Philips Semiconductors
Product specification
3-band mixer/oscillator and PLL for
terrestrial tuners
TDA6508; TDA6508A;
TDA6509; TDA6509A
handbook, full pagewidth
50
50
50
50
ew
eu
unwanted
signal
source
wanted
signal
source
AM = 30%
Vi
MDB254
27
50
38.9 MHz
V
MID_RFIN1
MID_RFIN2
IFAMP_OUT1
A
B
C
D
HYBRID
A
B
C
D
HYBRID
18 dB
attenuator
Vo(meas)
RMS
voltmeter
modulation
analyzer
Vo
FILTER
D.U.T.
Fig.20 Cross-modulation measurement in the MID-band of the TDA6508A; TDA6509A.
V
o
= V
o(meas)
+ 3.75 dB.
Wanted output signal at fpix; V
o(w)
= 100 dB
μ
V.
Unwanted output signal at fsnd; AM = 30%; AF = 2 kHz.
Measuring the level of unwanted signal causing 0.3% AM in the wanted signal.
f
RF(w)
= 154.25 MHz (min.); 447.25 MHz (max.).
f
RF(u)
= 159.75 MHz (min.); 452.75 MHz (max.).
f
osc
= 193.15 MHz (min.); 486.15 MHz (max.).
mdb257
D.U.T.
HIGH_RFIN1
HIGH_RFIN2
IFAMP_OUT1
IFAMP_OUT2
50
2 x 5
turns
2
turns
V
i
V
o
V
o(meas)
spectrum
analyzer
signal
source
V
HYBRID
A
C
B
D
N1/N2 = 5
e
50
50
50
V
i(meas)
RMS
voltmeter
Fig.21 Gain measurement in the HIGH-band of the TDA6508; TDA6509.
Hybrid loss = 1 dB.
V
i
= V
i(meas)
loss = 70 dB
μ
V.
V
o
= V
o(meas)
+ 15 dB (transformer ratio N1/N2 and transformer loss).
V
o
V
i
G
v
= 20 log
PAL f
IF
= 36.15 MHz.
------
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