mk2069-01 Integrated Device Technology, mk2069-01 Datasheet - Page 14

• Manufacturer Part Number: mk2069-01
• Description: Vcxo-based Line Card Clock Synchronizer
• Manufacturer: Integrated Device Technology

Recommended PCB Layout Diagram
Components are identified by function (top line) and by typical package type (bottom line) which may vary.
Legend:
IDT™ / ICS™ VCXO-BASED LINE CARD CLOCK SYNCHRONIZER
G = Via to PCB Ground plane
V = Via to PCB Power Plane
CE = EMI suppression cap, typical value 0.1 µF (ceramic)
FC = Ferrite chip
CBD = Bulk decoupling capacitor for chip power supply, 1
CBB = Bulk bypass cap for chip power supply, typical
CD = Decoupling capacitor for VDD pin (ceramic)
CL = Optional load capacitor for crystal tuning (do not
CS = External loop capacitor C
MK2069-01
VCXO-BASED LINE CARD CLOCK SYNCHRONIZER
µF minimum (tantalum)
value 1000 nF (ceramic)
stuff)
THRU HOLE FOR 3RD LEAD (XTAL CASE GROUND)
OPTIONAL CRYSTAL SHIELDING
SHIELD TRACE (TOP LAYER)
G
G
CUT CHANNEL IN GROUND PLANE
G
G
G
S
(film type)
XTAL
G
G
G
G
603
RS
G
RSET
603
V
14
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
SUPPLY SOURCE TO DEVICE
(SUCH AS VIA TO SUPPLY PLANE)
CP = External loop capacitor C
RS = External loop resistor R
RSET = Resistor R
RT = Series termination resistor for clock output, typical
RLD* = External resistor for lock detector circuit
CLD* = External capacitor for lock detector circuit
*Note: If output LD is not used, RLD and CLD may be
G
603
CE
G
FC
A
G
G
value 33 Ω
omitted. See text on page 10.
G
MK2069
CBB
603
CBD
A
G
G
SET
G
G
G
used to set charge pump current
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
S
VCXO AND SYNTHESIZER
G
P
603
CD
(film type)
MK2069-01
RLD
CLD
603
603
603
RT
603
RT
G
G
REV H 050203