TDA5632 Datasheet, PDF (8/20 Pages) NXP Semiconductors – 9 V VHF and UHF mixers/oscillators for TV and VCR cable tuners

Philips Semiconductors
9 V VHF and UHF mixers/oscillators for TV
and VCR cable tuners
Product specification
TDA5632; TDA5633
handbook, full pagewidth
signal
source
50 Ω
e
Vmeas _V
A IN
IF
27 Ω
out
50 Ω _Vin
D.U.T.
Vout
V'meas
spectrum
analyzer
50 Ω
A IN
RMS
voltmeter
MBH333
Z_i >> 50 Ω => V_in = 2V_meas (V_in = 80 dBµV); V_out = V'_meas × ^{5----0---5--+}-0----2---7-- ; voltage gain for band A = 20 log -V-V---^o-_i--^un--^t .
Fig.4 Band A gain measurement.
handbook, full pagewidth
BNC ^C1
L1
I1
PCB
plug
C2
RIM-RIM
(a)
I3
PCB
BNC ^C3
I2
plug
RIM-RIM
C4
(b)
MBE286 - 1
(a) For f_RF = 50 MHz:
mixer A frequency response measured = 57 MHz, loss = 0 dB
image suppression = 16 dB.
C1 = 9 pF.
C2 = 15 pF.
L1 = 7 turns (5.5 mm, wire diameter = 0.5 mm).
l1 = rigid cable (RIM): 5 cm long
(rigid cable (RIM); 33 dB/100 m; 50 Ω, 96 pF/m).
(b) For f_RF = 150 MHz:
mixer A frequency response measured = 150.3 MHz, loss = 1.3 dB
image suppression = 13 dB.
C3 = 5 pF.
C4 = 25 pF.
l2 = rigid cable (RIM): 30 cm long.
l3 = rigid cable (RIM): 5 cm long
(rigid cable (RIM); 33 dB/100 m; 50 Ω; 96 pF/m).
Fig.5 Input circuit for minimum noise figure.
1996 Aug 16
8