tda6508 NXP Semiconductors, tda6508 Datasheet - Page 19

• Manufacturer Part Number: tda6508
• Description: 3-band Mixer/oscillator And Pll For Terrestrial Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
8. This is the level of signals close to the IF frequency which can interfere with the dividers. Typical interference signals
9. Crystal oscillator interference is the 4 MHz sidebands produced by the crystal oscillator. The rejection must be
10. Reference frequency rejection measures the level of reference frequency sidebands with respect to the sound
11. Channel SO2 beat is the interfering product of the picture carrier frequency f
2005 Mar 25
handbook, full pagewidth
3-band mixer/oscillator and PLL for
terrestrial tuners
are channel S3: f
any load or cable; the HIGH RF inputs are connected to a hybrid (balun).
greater than 60 dB for an IF output signal of 110 dB V for versions TDA6508; TDA6509 or 100 dB V for versions
TDA6508A; TDA6509A.
sub-carrier f
f
V
BEAT
RF
= 80 dB V.
= f
osc
Fig.5 Input admittance (S
ssc
2
.
osc
f
IF
= 37.35 MHz. Another possible mechanism is: 2
= 256.15 MHz,
5
11
32
2
) of the LOW band mixer (43.25 to 161.25 MHz); Y
2
f
osc
2
= 40.02 MHz. The LOW and MID RF inputs must not be connected to
19
1
1
1
0.5
f
pc
0.5
0.5
161.25 MHz
43.25 MHz
f
osc
pc,
MDB220
. For the measurement,
TDA6508; TDA6508A;
f
IF
TDA6509; TDA6509A
and f
0
j
j
OSC
O
in channel SO2:
= 20 mS.
Product specification