Texas Instruments LMX2594EVM, User Manual

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Key Results to Expect
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6 SNAU210A – March 2017 – Revised March 2020
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LMX2594 EVM Instructions – 15-GHz Wideband Low Noise PLL With
Integrated VCO
Table 2. Loop Filter Configuration (continued)
PARAMETER VALUE
R2 68 Ω
R3_LF 0 Ω
R4_LF 18 Ω
Effective Charge Pump Gain 15 mA
Phase Detector Frequency (MHz) 200 MHz
VCO Frequency
Designed for 15 GHz, but works
over the whole frequency range
Figure 8. Loop Filter Configuration
For detailed design and simulation of TI's PLLATINUM™ integrated circuits, see the PLLatinum Sim Tool .
For application notes, blogs, or videos on TI PLL products, see http://www.ti.com/pll .
5 Key Results to Expect
Figure 9. Phase Noise Plot at 14-GHz Output Frequency
This assumes that the input reference is very clean, such as a 100-MHz Wenzel oscillator. A signal
generator is NOT sufficiently clean.