LMK61A2-100M: Oscillator for Agilex 5

Shuji Ishiwata

Hi All,

I'm looking for a 100MHz oscillator that satisfies the I/O PLL requirements of the Agilex 5.
Is the LMK61A2-100M00 usable with the Agilex 5?

The specifications listed in "Table 53. E-Series FPGAs I/O PLL Specifications"
https://docs.altera.com/r/docs/813918/current/agilextm-5-fpgas-and-socs-device-data-sheet/i/o-pll-specifications
• tINCCJ
• tREFPJ
• tREFPN
Does the LMK61A2-100M00 meet the above specifications? It seems that all except tINCCJ meet the specifications.

Best Regards,
Ishiwata

2 months ago

0 Jaryd Dukes 2 months ago

TI__Expert 3990 points

Hi Ishiwata,

We're looking into your inquiry, we'll get back to you early next week.

Best,
Jaryd

0 Shuji Ishiwata 2 months ago in reply to Jaryd Dukes

Mastermind 8880 points

Hi Jaryd,

Thank you for your support.

I am waiting for your reply.

Best Regards,
Ishiwata

+1 Jaryd Dukes 2 months ago in reply to Shuji Ishiwata

TI__Expert 3990 points

Hi Ishiwata,

The LMK61A2-100M should meet the RMS jitter and phase noise requirements for the Agilex 5 (tREFPJ and tREFPN).
We unfortunately do not specify cycle-to-cycle jitter in the LMK61A2-100M datasheet or in our internal database. However looking at the FPGA requirements you sent, the LMK61A2-100M should meet the cycle-to-cycle requirements since the maximum rating for cycle-to-cycle jitter at ≥ 100MHz (0.15UI) will provide more than enough margin for our device.

Best,
Jaryd

Clock & timing

Clock & timing forum

LMK61A2-100M: Oscillator for Agilex 5