tda5737a NXP Semiconductors, tda5737a Datasheet - Page 13

• Manufacturer Part Number: tda5737a
• Description: Tda5737a 5 V Vhf, Hyperband And Uhf Mixers/oscillators For Tv And Vcr 3-band Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Dec 19
handbook, full pagewidth
handbook, full pagewidth
5 V VHF, hyperband and UHF
mixers/oscillators for TV and VCR 3-band tuners
V’
Wanted output signal at f
We measure the level of the unwanted signal V
f
V
Filter characteristics: f
RFU
e w
ou
e u
meas
= V’
= 165.5 or 445.5 MHz (445.5 or 855.5 MHz); f
50
50
= V
meas
o
AM = 30%
unwanted
+ 15.4 dB.
source
wanted
source
signal
signal
15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).
Fig.11 Input admittance (s
c
A
HYBRID
B
= 33.9 MHz; f
RFW
= 170 or 450 MHz (450 or 860 MHz); V
C
D
50
Fig.10 Cross modulation measurement in bands B and C.
10
10
3dBBW
5
5
(V IMC )
V IMB
= 1 MHz; f
50
10
ou
A
B
HYBRID
causing 1% AM modulation in the wanted output signal;
OSC
5
2
2
11
= 203.9 or 483.9 MHz (483.9 or 893.9 MHz).
30dBBW
) of the band A mixer input (40 to 200 MHz); Y
C
D
2
= 2.3 MHz.
RFB
(RFC)
RFB
(RFC)
ow
D.U.T.
= 70 dB V.
13
1
1
1
out
out
IF
IF
0.5
V
o
2 x 5
turns
N1/N2 = 5
0.2
0.5
0.5
200 MHz
40 MHz
2
turns
MBH055
0.2
0.2
voltmeter
RMS
0
V
attenuator
18 dB
– j
+ j
o
= 20 mS.
Preliminary specification
33.9 MHz
FILTER
TDA5737A
modulation
analyzer
50
MGE973