Please recommend a PLL device.

JH Shin

Guru 11060 points

Other Parts Discussed in Thread: LMX2820, LMX2582

Hello,

Please recommend a PLL device suitable for the conditions below.

We cannot search using the reference clock condition on the TI website.

1. Reference clock : 1000MHz

2. Output Clock : 1200MHz, 350MHz

Thanks in advance.

over 5 years ago

0 Dinesh Jain over 5 years ago

TI__Prodigy 550 points

Hello JH,

Here are some suggestion for closest solutions.

1. LMX2820: This device can support up-to 1.4 GHz input. There are two channel dividers (binary dividers only) which can support two frequencies. For example: VCO = 9600 MHz, OUT1 = 9600/8 = 1200 MHz, OUT2 = 9600/32 = 300 MHz (not 350 MHz).

2. LMX2582/2592/2594: These devices can support up-to 1.4 GHz input. However, they have one channel divider. You will need to use external frequency divider to generate lower frequency.

3. For 1200 MHz and 350 MHz, it would be two device solution - one for each domain. A splitter can be used to feed 1 GHz input clock to both these devices.

Please let us know any follow-up questions you would have.

Regards,

dinesh.

Clock & timing

Clock & timing forum

Please recommend a PLL device.