LMK04000BEVALXO National Semiconductor, LMK04000BEVALXO Datasheet - Page 9

• Manufacturer Part Number: LMK04000BEVALXO
• Description: BOARD EVAL PREC CLOCK PLL XO
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMK04000BEVALXO

• Main Purpose: Timing, Clock Conditioner
• Embedded: No
• Utilized Ic / Part: LMK04000
• Primary Attributes: 122.88 MHz Crystal
• Secondary Attributes: Integrated PLL & VCO
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 3. PLL1 and PLL2 Parameters for VCXO Option, 100 MHz.
Note: PLL Loop Bandwidth is a function of Kφ, Kvco, N as well as loop components. Changing Kφ and N will
change the loop bandwidth.
Table 4. PLL1 and PLL2 Parameters for VCXO Option, 61.44 MHz
Ref Clk Frequency
Ref Clk Frequency
VCXO Frequency
VCXO Frequency
Loop Bandwidth
Loop Bandwidth
Loop Bandwidth
Loop Bandwidth
Supply Voltage
Supply Voltage
Supply Voltage
Supply Voltage
Phase Margin
Phase Margin
Phase Margin
Phase Margin
Components
Components
Components
Components
Loop Filter
Loop Filter
Loop Filter
Loop Filter
C3 = 0
L M K 0 4 0 X X
61.44 MHz VCXO option PLL 1 Loop Filter
100 MHz VCXO Option PLL 2 Loop Filter
100 MHz VCXO option PLL 1 Loop Filter
61.44 MHz VCXO PLL 2 Loop Filter
C1 = 100 nF
(From PLL1)
C1 = 100 nF
(From PLL1)
122.88 MHz
C4 = 10 pF
61.44MHz
100 MHz
3.3 Volts
3.3 Volts
3.3 Volts
3.3 Volts
301 kHz
185 kHz
10 MHz
C1 = 0
C1 = 0
20 Hz
20 Hz
E V A L U A T I O N
50º
79º
50º
74º
Output Frequency
Output Frequency
Output Frequency
Output Frequency
R3 = 0.6k ohms
C2 = 680 nF
C2 = 680 nF
B O A R D
C2 = 12 nF
C2 = 12 nF
VCO Gain
VCO Gain
VCO Gain
VCO Gain
9
Fcomp
Fcomp
Fcomp
Fcomp
Kφ
Kφ
Kφ
Kφ
O P E R A T I N G
I N S T R U C T I O N S
R2 = 1.8 k ohms
R2 = 1.8 k ohms
R4 = 0.2k ohms
R2 = 39k ohms
R2 = 39k ohms
1474.56 MHz
10 MHz/Volt
10 MHz/Volt
2.5 kHz/Volt
1.024 MHz
61.44 MHz
61.44 MHz
(To PLL 2)
(To PLL 2)
4 kHz/Volt
1500 MHz
100 MHz
3200 uA
1600 uA
50 MHz
100 uA
100 uA
1 MHz