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參數(shù)資料
| 型號(hào)： | TDA6509ATT |
| 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)： | 29/42頁(yè) |
| 文件大?。?/td> | 274K |
| 代理商： | TDA6509ATT |
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2005 Mar 25
29
Philips Semiconductors
Product specification
3-band mixer/oscillator and PLL for
terrestrial tuners
TDA6508; TDA6508A;
TDA6509; TDA6509A
handbook, full pagewidth
MDB256
27
HIGH_RFIN1
HIGH_RFIN2
IFAMP_OUT1
D.U.T.
NOISE
SOURCE
NOISE
FIGURE
METER
50
A
B
C
D
HYBRID
Fig.24 Noise figure measurement in the HIGH-band of the TDA6508A; 6509A.
Hybrid loss = 1 dB.
NF = NF
meas
hybrid loss.
handbook, full pagewidth
source
50
50
wanted
signal
source
50
50
MDB251
D.U.T.
HIGH_RFIN1
HIGH_RFIN2
IFAMP_OUT1
IFAMP_OUT2
18 dB
attenuator
50
o
N1/N2 = 5
2 x 5
turns
2
turns
V
FILTER
38.9 MHz
modulation
analyzer
HYBRID
A
C
B
D
HYBRID
A
C
B
D
V
RMS
voltmeter
Vi
Vo(meas)
AM = 30%
eu
ew
Fig.25 Cross-modulation measurement in the HIGH-band of the TDA6508; TDA6509.
V
o
= V
o(meas)
+ 15 dB (transformer ratio N1/N2 and transformer loss).
Wanted output signal at picture carrier frequency f
RF(w)
; V
o(w)
= 110 dB
μ
V.
Unwanted output signal at sound sub-carrier frequency f
RF(u)
; AM = 30%; AF = 2 kHz.
Measuring the level of unwanted signal causing 0.3% AM in the wanted signal.
f
RF(w)
= 439.25 MHz (min.); 863.25 MHz (max.).
f
RF(u)
= 444.75 MHz (min.); 868.75 MHz (max.).
f
osc
= 478.15 MHz (min.); 902.15 MHz (max.).
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