Texas Instruments Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 2.2 GHz VCO LMK04805BEVAL/NOPB LMK04805BEVAL/NOPB 데이터 시트
제품 코드
LMK04805BEVAL/NOPB
L M K 0 4 8 X X 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
5
Quick Start
Full evaluation board instructions are downloadable from the LMK048xxB device product folder
at
at
1. Connect a power supply voltage of 5 V to the Vcc SMA connector. The onboard
LP3878-ADJ LDO regulator will output a low-noise 3.3 V supply to operate the device.
2. Connect a reference clock from a signal source to the CLKin1 SMA port. Use 122.88
MHz for default. The reference frequency depends on the device programming.
3. Connect the uWire header to a PC parallel port using the CodeLoader cable. A USB
interface is also available (search for “USB2UWIRE-IFACE” at
4. Program the device with a default mode using CodeLoader. Ctrl+L must be pressed at
least once to load all registers. Alternatively click menu “Keyboard Controls” “Load
Device”. CodeLoader can be downloaded from
Device”. CodeLoader can be downloaded from
5. Measurements may be made on an active output clock port via its SMA connector.
C
L
K
o
u
t0
C
L
K
o
u
t0
*
Laptop or PC
Parallel Port
Connector
5.0 V
(LDO)
1
3
4
Program with CodeLoader
Be sure to press ‘Ctrl - L’
Be sure to press ‘Ctrl - L’
CL
Kin
1
Reference clock from
signal generator or other
external source.
122.88 MHz
(Default)
2
Power
Reference
LMK048xx
uWire
header
P
a
ra
lle
l
P
o
rt
R
ib
b
o
n
C
a
b
le
C
L
K
o
u
t2
C
L
K
o
u
t2
*
CLK
out4
CLK
out4
*
CLK
out6
*
CLK
out6
CLK
out8
CLK
out8
*
CL
Ko
ut1
0*
CL
Ko
ut1
0
O
S
C
o
u
t0
O
S
C
o
u
t0
*
CL
Kin
0
CL
Kin
0*
5.0 V
3.3 V
Factory default is LDO is used.
Customer may reconfigure to
power LMK directly.
Figure 1: Quick Start Diagram