TDA5630 Datasheet, PDF (11/28 Pages) NXP Semiconductors – 9 V VHF, hyperband and UHF mixer/oscillator for TV and VCR 3-band tuners

Philips Semiconductors
9 V VHF, hyperband and UHF
mixer/oscillator for TV and VCR 3-band tuners
Product specification
TDA5630;
TDA5631
handbook, full pagewidth
NOISE
SOURCE
BNC
RIM
INPUT
CIRCUIT
(see Fig. 5)
AIN IFOUT1
D.U.T.
GND IFOUT2
TR
NOISE
METER
2x5
turns
2
turns
N1/N2 = 5
MBH046
(1) NF = NF_meas − loss (input circuit) dB.
Fig.6 Noise figure measurement in band A.
handbook, full pagewidth ^unwanted
signal
50 Ω source
AC
AM = 30%
eu
1 kHz
HYBRID
50 Ω
BD
wanted
ew
signal
source
AIN IFOUT1
D.U.T.
Vo
2x5
turns
FILTER
18 dB
attenuator
38.9 MHz
2
V ^Vmeas
turns
modulation
analyzer
50 Ω
GND IFOUT2
50
Ω
N1/N2 = 5 RMS
voltmeter
MBH047
V_meas = V_o − 15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).
Wanted output signal at f_RFW = 180 MHz: V_ow =104 dBµV (V_meas = 88.6 dBµV).
We measure the level of the unwanted signal V_ou causing 0.3 % AM modulation in the wanted output signal; f_RFU = 185.5 MHz.
V_ou = V_meas + 15.4 dB.
f_osc = 218.9 MHz.
Filter characteristics: f_c = 38.9 MHz, f_−3dBBW = 1.2 MHz, f_−30dBBW = 2.64 MHz.
Fig.7 Cross modulation measurement in band A.
1996 Mar 21
11