Texas Instruments Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 1.9 GHz VCO LMK04803BEVAL/NOPB LMK04803BEVAL/NOPB Ficha De Dados
Códigos do produto
LMK04803BEVAL/NOPB
28 SNAU045A
LMK040xx Evaluation Board User’s Guide
November 2013
Copyright © 2013, Texas Instruments Incorporated
www.ti.com
Appendix B: Board Layers Stackup
Layers of the 6 layer evaluation board include:
Blue is dielectrics
Top layer for high priority high frequency signals
o
1 oz CU
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
Top to bottom layer order:
LMK04000.GTL
(1)
LMK04000.GP1
(2) gnd
LMK04000.GP2
(3) vcc
LMK04000.GP3
(4) gnd
LMK04000.G1
(5) vcc
LMK04000.GBL
(6)
RO4003 (Er = 3.38)
CONTROLLED THICKNESS of
16 mils thick
Top Copper. 1oz thick [LMK04000.GTL]
GND plane [LMK04000.GP1]
FR4 (Er = ~4.6)
CONTROLLED THICKNESS: 2.5 mils
thick
VccCLK plane [LMK04000.GP2]
FR4
?? mils thick
Middle Ground Plane
Middle Ground Plane
FR4
?? mils thick
Bottom Copper – Thermal relief
Bottom Copper – Thermal relief
[Bulova.GBL]
62 mi
ls t
hick total
FR4
?? mils thick
Vcc mixed plane [LMK04000.G1]
Vcc mixed plane [LMK04000.G1]