TDA6650TT Datasheet, PDF (30/55 Pages) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

Philips Semiconductors
5 V mixer/oscillator and low noise PLL synthesizer
for hybrid terrestrial tuner (digital and analog)
Product specification
TDA6650TT;
TDA6651TT
−100
handbook, full pagewidth
Φ_osc
(dBc/Hz)
−105
FCE920
−110
−115
−120
40
140
240
340
440
540
640
740
840
940
fRF (MHz)
Fig.13 100 kHz phase noise typical performance in hybrid application (Figs 29 and 30).
handbook, full pagewidth
signal
50 Ω source
e
Vmeas _V
50
Ω
RMS
voltmeter
LBIN
or
IFOUTA
MBIN
DUT
Vi
IFOUTB
27 Ω
Vo ^V'meas
VCCA
spectrum
analyzer
50 Ω
FCE747
Z_i >> 50 Ω → V_i = 2 × V_meas = 70 dBµV.
V_i = V_meas + 6 dB = 70 dBµV.
V_o = V’_meas + 3.75 dB.
G_v = 20 log -VV----^o-_i .
DVB-T and PAL.
IF = 38.9 MHz.
Fig.14 Gain (G_V) measurement in low and mid band with asymmetrical IF output.
2004 Mar 22
30