LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 18

• 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

The PLL2 tab allows the user to change:
Any changes made on this tab are reflected in the Clock Outputs tab. Note that the PLL2 Phase Detector
polarity is fixed and cannot be changed by the user. Also note that the VCO frequency should conform to
the specified frequency range for the device (see Table 1).
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VCO frequency
PLL2 Phase detector frequency
PLL2 R-counter value
PLL2 N-counter value
The frequency of the external VCXO (or XTAL oscillator). Note: This value must be entered in
both the PLL1 and PLL2 tabs.
PLL2 Charge pump gain
PLL2 Charge pump state.
L M K 0 4 0 X X
E V A L U A T I O N
Figure 11. PLL2 tab.
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O P E R A T I N G
I N S T R U C T I O N S