SAF7115ET NXP [NXP Semiconductors], SAF7115ET Datasheet - Page 20

• Manufacturer Part Number: SAF7115ET
• Description: Multistandard video decoder with super-adaptive comb filter,
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
10. Application information
Table 9.
[1]
[2]
SAF7115_1
Product data sheet
Example
1
2
3
4
5
See
See
Table
Section
Configuration examples quartz crystal (see
8.
Quartz crystal
Type
3rd harmonic
3rd harmonic
fundamental
fundamental
fundamental
10.1.1 Generic oscillator applications
10.1.2 Fundamental quartz crystals with restricted drive level
10.1.2.
10.1 Oscillator applications
10.2 PCB layout guidelines for oscillator applications
Figure 5
input.
Leave out L and C
Section
the SAF7115 provides too much power P
decreased crystal amplitude results in a lower drive level, but on the other hand the jitter
performance will decrease.
Place the quartz crystal on the PCB as close to pins XTALI and XTALO as possible to
minimize susceptibility to noise from current loops. Minimize parasitic capacitances.
Fig 5. Oscillator applications (see
[1]
f
32.11
24.576
32.11
32.11
24.576
xtal(nom)
Table 9
a. Generic oscillator circuit
10.1.1). Use a series resistance R
shows the generic oscillator circuit with quartz crystals and with direct clock
D1 (7)
(MHz) C
XTALI
shows configuration examples for different quartz crystals.
L
C 1
SAF7115
1
when using fundamental quartz crystal and restricted drive level (see
8
8
20
8
8
f xtal(nom)
Rev. 01 — 15 October 2008
L
C 2
(pF)
C1 (6)
C 3
001aah884
Figure
XTALO
R s
Oscillator circuit
L ( H)
4.7
4.7
none
none
none
Table
5)
drive
9)
s
at pin XTALO, when the internal oscillator of
to the selected quartz crystal. Note that the
C
1
1
none
none
none
1
(nF)
b. With direct clock.
D1 (7)
C
15
18
33
10
15
XTALI
Multistandard video decoder
32.11 MHz or
24.576 MHz
2
(pF)
clock
SAF7115
C
15
18
33
10
15
3
SAF7115
© NXP B.V. 2008. All rights reserved.
(pF)
C1 (6)
001aah706
n.c.
XTALO
R
0
0
0
0
0
s
( )
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[2]