LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 28

• 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

Clock Outputs
The LMK04000 Family features LVDS, LVPECL, 2VPECL, and LVCMOS types of outputs.
Included below are various phase noise measurements for each output.
Note: The device in parenthesis is the device used for the measurement in these evaluation board
instructions.
Clock Output Measurement Technique
The measurement technique for each output type varies.
LVDS – measured with an ADT2-1T balun to test equipment.
LVPECL/2VPECL – Measured by terminating complementary output with 50 ohm load, then
taking output to test equipment.
LVCMOS – Measured by enabling only one side of the LVCMOS output and taking the
operating output to test equipment.
The following table lists the test conditions used for the phase noise measurements for the
VCXO option:
Table 12 . LMK040xxB test conditions
Parameter
PLL1 Reference clock input
PLL1 Reference Clock frequency 122.88 MHz
PLL1 Phase detector frequency
PLL1 Charge Pump Gain
VCXO frequency
PLL2 phase detector frequency
PLL2 Charge Pump Gain
PLL2 REF2X mode
(LMK04000B)
(LMK04031B)
(LMK04002B)
(LMK04033B)
LMK040x0B
LMK040x1B
LMK040x2B
LMK040x3B
Device
L M K 0 4 0 X X - R E V 3
LVDS
X
X
LVPECL/2VPECL
Value
CLKin0* single-ended input, CLKin0 AC-coupled to GND
1024 kHz
100 uA
122.88 MHz
61.44 MHz
3200 uA
Disabled
E V A L U A T I O N
X
X
X
X
28
B O A R D
O P E R A T I N G
LVCMOS
X
X
X
X
I N S T R U C T I O N S
1185 to 1296 MHz
1430 to 1570 MHz
1566 to 1724 MHz
1840 to 2160 MHz
VCO Frequency