Part Number: LMX2594
Other Parts Discussed in Thread: LMX2820
Hello,
Could you please suggest the possible ways to improve the Turn ON time of the LMX2594 PLL chip with below requirements.
Normally the locking time of the PLL chip was combination of VCO calibration time(which can be minimized by full assist pre calibrated register settings) and analog settling time of PLL loop(which can be minimized by loop band width) and we had optimized the switching time from one frequency to another frequency to <25usec.
Now we had requirement of Turn ON time of < 500nsec and do you have any suggestion and is this requirement practically possible with PLL based synthesizer design.
Also do you have any suggestions on the voltage regulator with fast settling with input of 12V and output of 3.3V to supply required voltage to PLL chip.
Step 1: Turn ON the PLL chip and load the the required register for the locking.
Step 2: Turn OFF the PLL chip and Turn ON the PLL chip and measure the time delay to get the frequency output.
Regards,
Varaprasad.R
