L M K 0 4 9 0 6 E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S
SNAU126
42
Appendix C: Schematics
Power Supplies
1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
2
8
Power Supplies
1/25/2012
Power.SchDoc
Sheet Title:
Size:
Schematic:
Mod. Date:
File:
Rev:
Sheet:
of
B
Texas Instruments and/or its licensors do not warrant the accuracy or completeness of this
specification or any information contained therein. Texas Instruments and/or its licensors do not
warrant that this design will meet the specifications, will be suitable for your application or fit for
any particular purpose, or will operate in an implementation. Texas Instruments and/or its
licensors do not warrant that the design is production worthy. You should completely validate
and test your design implementation to confirm the system functionality for your application.
http://www.ti.com
Contact:
http://www.national.com/support
LMK049xx Evaluation Board
Project:
Designed for:
Evaluation Customer
870
600738
1
Assembly Variant:
12-21-2011
© Texas Instruments CopyrightYear
VccPLLPlane
0.1µF
C81
FB 1000 ohm 600 mA
R96
DNP
FB 1000 ohm 600 mA
R98
DNP
VccCLKoutPlane
FB 1000 ohm 600 mA
R97
DNP
0.1µF
C78
LDO Power Options
Power Plane for LMK Except Outputs
Power Planes for LMK CLKout Outputs
Vcc
VccAuxPlane
VccCLKoutPlane
VccPLLPlane
Direct Power
120
R103
VccAuxPlane
IN
4
ADJ
6
GND
3
NC
7
SD
8
DAP
9
OUT
5
BYP
1
NC
2
U5
LP3878SD-ADJ
LP3878-ADJ 3.3 V component values:
C340 = 4.7 uF
R350= 51 k
C346 = 0.01 uF
R356= 866
C352 = 10 uF
R351= 2.00 k
C341 = 2.2 nF
0.1µF
C72
1µF
C71
1µF
C89
DNP
1µF
C93
DNP
1
1
2
2
J1
TERMBLOCK_2
IN
6
OUT
1
GND
3
EN
4
NC
5
DAP
7
NC
2
U7
LP5900SD-3.3
GND
C359 = 0.47 uF
C360 = 0.47 uF
R369 = 51 k
Designators greater than and equal to 300 are placed on bottom of PCB
LP3878SD-ADJ
LP5900SD-3.3
LP5900 Component values
0
R99
FB 120 ohm
R104
120
R106
0.1µF
C63
1µF
C62
DNP
10µF
C61
0.1µF
C69
1µF
C68
DNP
10µF
C67
0.1µF
C75
1µF
C74
DNP
10µF
C73
Aux Power for XO/VCXO
0.1µF
C65
1µF
C64
1µF
C82
DNP
Vcc2_CLKout_CG1
Vcc1_VCO
Vcc4_Digital
Vcc5_CLKin
Vcc6_PDCP1
Vcc7_OSC
Vcc8_PDCP2
Vcc9_PLL2
CG3
CG4
CG5
CG0
CG2
CG1
Vcc13_CLKout_CG0
VCO
Digital
CLKin
PDCP1
OSC
PDCP2
PLL2
0
R101
0
R105
120
R111
Vcc_VCO
VccAuxPlane
0
R112
DNP
120
R100
VccCLKoutPlane
120
R102
VccPLLPlane
LDO_Out_LP3878
TESTPOINT
0.1µF
C66
DNP
0.1µF
C70
DNP
100pF
C76
DNP
0.1µF
C77
DNP
100pF
C79
DNP
0.1µF
C80
DNP
51k
R107
0.01µF
C88
2.00k
R108
866
R110
51k
R125
0.47µF
C94
0.47µF
C96
0
R122
DNP
4.7µF
C83
1µF
C85
2200pF
C84
Vcc10_CLKout_CG3
Vcc11_CLKout_CG4
Vcc3_CLKout_CG2
Vcc12_CLKout_CG5
1µF
C95
DNP
1µF
C90
DNP
1µF
C87
DNP
120
R109
120
R115
120
R124
120
R121
IN
6
OUT
1
GND
3
EN
4
NC
5
DAP
7
NC
2
U6
LP5900SD-3.3
DNP
GND
C359 = 0.47 uF
C360 = 0.47 uF
R369 = 51 k
LP5900SD-3.3
LP5900 Component values
51k
R118
DNP
0.47µF
C92
DNP
0.47µF
C91
DNP
Vcc
0
R114
DNP
0
R117
DNP
Vcc_VCO_LDO
0
R113
DNP
0
R116
DNP
Vcc_VCXO
0
R123
Switch resistor
for power.
10µF
C86
Vcc
0
R120
VccAuxPlane
0
R119
DNP
Switch resistor
for power.
Vcc
VccVCO/Aux
DNP