參數(shù)資料
型號(hào)： TDA6500TT/C4,118
廠商： NXP SEMICONDUCTORS
元件分類： 調(diào)諧器
英文描述： 3-BAND, VIDEO TUNER, PDSO32
封裝： 6.10 MM, 0.65 MM PITCH, PLASTIC, MO-153, SOT487-1, TSSOP-32
文件頁數(shù)： 22/37頁
文件大?。?/td> 223K
代理商： TDA6500TT/C4,118
9397 750 15057
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 14 June 2005
29 of 37
Philips Semiconductors
TDA6500; TDA6501
5 V mixer/oscillator and synthesizer for PAL and NTSC standards
13.3 Test circuit for mid and high band measurements
Loss in hybrid = 1 dB.
Vi =Vmeas loss = 70 dBV
Vo =V’meas ×
=V’meas + attenuation
Gv = 20 log
PAL: IF = 38.9 MHz; L = 680 nH; C = 25.9 pF and attenuation = 10.2 dB
Fig 13. Gain (GV) measurement in mid and high bands
Loss in hybrid = 1 dB.
NF = NFmeas loss.
PAL: IF = 38.9 MHz; L = 680 nH; C = 25.9 pF
Fig 14. Noise gure (NF) measurement in mid and high bands
fce216
Vi
50
50
50
50
V
MHBIN1
MHBIN2
IFOUT
Vmeas
RMS
voltmeter
spectrum
analyzer
Vo
DUT
V'meas
signal
source
A
B
C
D
HYBRID
C
L
e
50
2
L
2ω2
+
--------------------------------
V
o
V
i
------
fce217
50
MHBIN1
MHBIN2
IFOUT
DUT
A
B
C
D
HYBRID
C
L
NOISE
SOURCE
NOISE
FIGURE
METER
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