L M K 0 3 0 0 2 C

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

10

Recommended Equipment

Power Supply

The Power Supply should be a low noise power supply. An Agilent 6623A Triple power supply with LC

filters on the output to reduce noise was used in creating these evaluation board instructions.

Phase Noise / Spectrum Analyzer

For measuring phase noise an Agilent E5052A is recommended. An Agilent E4445A PSA Spectrum

Analyzer with the Phase Noise option is also usable although the architecture of the E5052A is superior

for phase noise measurements. At frequencies less than 100 MHz the local oscillator noise of the PSA

is too high and measurements will be of the local oscillator, not the device under test.

Oscilloscope

For measuring delay an Agilent Infiniium DSO81204A was used.

Reference Oscillator

The on board crystal oscillator will provide a low noise reference signal to the device at offsets greater

than 1 kHz.

Note: The default loop filter has a loop bandwidth of ~105 kHz. Inside the loop bandwidth of a PLL the

noise is greatly affected by any noise on the reference oscillator (OSCin). Therefore any noise on the

oscillator less than ~105 kHz will be passed through and seen on the outputs. For this reason the main

output of a Signal Generator is not recommended for driving OSCin in this setup.