tda5636 NXP Semiconductors, tda5636 Datasheet - Page 14

• Manufacturer Part Number: tda5636
• Description: 9 V Vhf, Hyperband And Uhf Mixers- Oscillators For Tv And Vcr 3-band Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1996 Jun 10
handbook, full pagewidth
handbook, full pagewidth
9 V VHF, hyperband and UHF mixers-
oscillators for TV and VCR 3-band tuners
Wanted input signal = 70 dB V; unwanted input signal modulated with 30% AM at 100 kHz; V
output signal is modulated with 0.3% AM.
f
loss
In band B: f
In band B: f
In band B: f
We measure the level of the unwanted signal V
V
UNWANTED
iu
= V
(hybrid)
meas
= 1 dB.
= f
RFW
OSC
RFU
loss
WANTED
e w
e u
= 430 MHz = f
= 429.9 MHz (in band C: f
= 391 MHz (in band C: f
(hybrid)
50
50
+ 5.5 MHz; f
unwanted
signal
source
.
input signal
input signal
unwanted
e u
wanted
source
source
RFW
50
V meas
Fig.11 N + 5 1 MHz pulling measurement in bands B and C.
OSC
+ 5
Fig.10 Cross modulation measurement in bands B and C.
= f
A
B
RFW
8 MHz
HYBRID
WANTED
V
OSC
= 781 MHz). These wanted signals are not used during the measurement.
= 819.9 MHz).
iu
50
+ 38.9 MHz.
C
D
1 MHz. (in band C: f
causing fm sidebands 30 dB below the oscillator carrier at the LO output.
50
50
A
B
50
HYBRID
wanted
signal
input
C
D
RFU
A
B
HYBRID
14
= 820 MHz = f
V
V i
BIN1
(CIN1)
BIN2
(CIN2)
C
D
voltmeter
D.U.T.
50
RMS
RFW
IFOUT
+ 5
ou
(CIN1)
(CIN2)
BIN1
BIN2
= unwanted output signal V
8 MHz
D.U.T.
V o
IFOUT
modulation analyzer
(unwanted AM on
the output wanted
frequency)
MBH471
1 MHz).
27
50
TDA5636; TDA5637
V o
MBH472
modulation analyzer
(unwanted AM on
the output wanted
frequency)
out
27
when the wanted
50
Product specification