TDA6402 Datasheet, PDF (24/40 Pages) NXP Semiconductors – 5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners

Philips Semiconductors
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
Product specification
TDA6402; TDA6402A;
TDA6403; TDA6403A
handbook, full pagewidth
signal
50 Ω source
A
C
e
Vmeas V
50 Ω ^{Vi HYBRID}
RMS ^{50 Ω}
voltmeter
B
D
UHFIN1 IFOUT
22 Ω
D.U.T.
UHFIN2
Vo V'meas
Loss (in hybrid) = 1 dB.
V_i = V_meas − loss (in hybrid) = 70 dBµV.
V_o = V’_meas × ^{5----0---5--+}-0----2---2--
G_v = 20 log ^V-V----o-_i
Fig.16 Gain (G_v) measurement in UHF band.
spectrum
analyzer
50 Ω
MGE701
handbook, full pagewidth
NOISE
SOURCE
50 Ω
A
C
HYBRID
B
D
UHFIN IFOUT
D.U.T.
UHFIN
22 Ω
NOISE
FIGURE
METER
MGE702
Loss (in hybrid) = 1 dB.
NF = NF_meas − loss (in hybrid).
Fig.17 Noise figure (NF) measurement in bands UHF.
2000 Jan 24
24