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TDA6509 数据表(PDF) 22 Page - NXP Semiconductors

部件名 TDA6509
功能描述  3-band mixer/oscillator and PLL for terrestrial tuners
PDF  42 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

TDA6509 数据表(HTML) 22 Page - NXP Semiconductors

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2005 Mar 25
22
Philips Semiconductors
Product specification
3-band mixer/oscillator and PLL for
terrestrial tuners
TDA6508; TDA6508A;
TDA6509; TDA6509A
13 TEST AND APPLICATION INFORMATION
mdb265
signal
source
V
Vi(meas)
D.U.T.
LOW_RFIN
GND
IFAMP_OUT1
IFAMP_OUT2
e
50
Ω
50
Ω
50
Ω
Vi
Vo
Vo(meas)
2 x 5
turns
2
turns
RMS
voltmeter
spectrum
analyzer
N1/N2 = 5
Fig.10 Gain measurement in the LOW-band of the TDA6508; TDA6509.
Zi >> 50 Ω⇒ Vi =2 × Vi(meas) =80dBµV.
Vi =Vi(meas) +6dB =80dBµV.
Vo =Vo(meas) + 15 dB (transformer ratio N1/N2 and transformer loss).
Gv = 20 log
PAL fIF = 36.15 MHz.
V
o
V
i
------
handbook, full pagewidth
MDB266
50
Ω
27
Ω
50
Ω
50
Ω
V
LOW_RFIN
IFAMP_OUT1
e
Vi(meas)
RMS
voltmeter
spectrum
analyzer
Vo
Vo(meas)
Vi
D.U.T.
signal
source
Fig.11 Gain measurement in the LOW-band of the TDA6508A; TDA6509A.
Zi >> 50 Ω⇒ Vi =2 × Vi(meas) =80dBµV.
Vi =Vi(meas) +6dB =80dBµV.
Vo =Vo(meas) + 3.75 dB.
Gv = 20 log
PAL fIF = 36.15 MHz.
V
o
V
i
------



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