LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 36

• Manufacturer Part Number: LMK04000BEVAL/NOPB
• Description: BOARD EVAL PRECISION CLOCK PLL
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMK04000BEVAL/NOPB

• Main Purpose: Timing, Clock Conditioner
• Embedded: No
• Utilized Ic / Part: LMK04000
• Primary Attributes: 122.88 MHz VCXO
• Secondary Attributes: Integrated PLL & VCO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMK04000BEVAL; LMK04000BEVAL

Appendix D: Board Layers Stackup
Layers of the 6 layer evaluation board include:
Blue is dielectrics
Top to bottom layer order:
LMK04000.GTL
LMK04000.GP1
LMK04000.GP2
LMK04000.GP3
LMK04000.G1
LMK04000.GBL
• Top layer for high priority high frequency signals
• RO4003 Dielectric, 16 mils
• Ground plane
• FR4, 2.5 mils thick.
• Power plane #1 – VccCLK
• FR4, xx mils
• middle ground plane
• FR4, xx mils
• VccPLL, VccAux
• FR4, xx mils
• Bottom layer copper clad for thermal relief
o 1 oz CU
L M K 0 4 0 X X - R E V 3
(1) top copper
(2) gnd
(3) vcc
(4) gnd
(5) vcc
(6) bottom copper
E V A L U A T I O N
B O A R D
O P E R A T I N G
36
I N S T R U C T I O N S
Top Copper. 1oz thick [LMK04000.GTL]
RO4003 (Er = 3.38)
CONTROLLED THICKNESS of
16 mils thick
GND plane [LMK04000.GP1]
FR4 (Er = ~4.6)
CONTROLLED THICKNESS: 2.5 mils
VccCLK plane [LMK04000.GP2]
FR4
Middle Ground Plane
FR4
Vcc mixed plane [LMK04000.G1]
FR4
Bottom Copper – Thermal relief
[LMK04000.GBL]