TDA5736 Datasheet, PDF (14/28 Pages) NXP Semiconductors – 5 V VHF, hyperband and UHF mixers/oscillators for TV and VCR 3-band tuners

Philips Semiconductors
5 V VHF, hyperband and UHF mixers/oscillators
for TV and VCR 3-band tuners
Product specification
TDA5736; TDA5737
handbook, full pag^ueⁿw^widt^ah^nted
signal
50 Ω source
AC
AM = 30%
eu
HYBRID
50 Ω
B
wanted
ew
signal
source
D
50
Ω
AC
VIMB _HYBRID
(VIMC)
BD
50
Ω
RFB
IF
(RFC)
out
D.U.T.
RFB
IF
(RFC)
out
Vo
2x5
turns
FILTER
18 dB
attenuator
33.9 MHz
2
V
turns
N1/N2 = 5 RMS
voltmeter
modulation
analyzer
50 Ω
MGE973
V’_meas = V_o − 15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).
Wanted output signal at f_RFW = 170 or 450 MHz (450 or 860 MHz); V_ow = 70 dBµV.
We measure the level of the unwanted signal V_ou causing 1% AM modulation in the wanted output signal;
f_RFU = 165.5 or 445.5 MHz (445.5 or 855.5 MHz); f_OSC = 203.9 or 483.9 MHz (483.9 or 893.9 MHz).
V_ou = V’_meas + 15.4 dB.
Filter characteristics: f_c = 33.9 MHz, f_−3dBBW = 1 MHz; f_−30dBBW = 2.3 MHz.
Fig.11 Cross modulation measurement in bands B and C.
handbook, full pagewidth
1
2
0.5
5
0.2
10
–j
∞
10 5
2
1
0.5
0.2 40 MHz
0
+j
10
200 MHz
5
0.2
2
0.5
1
MBH055
Fig.12 Input admittance (S₁₁) of the band A mixer input (40 to 200 MHz); Y_o = 20 mS.
1997 Feb 24
14