PPS output driver - questions
- IC16: what's the expected output PPS level? Why use an ultra-high speed opamp to drive it?
- AD8009 requires 10n+100n+some microfarads decoupling caps. The last ones are missing.
- IC16: No ferrite on -2V35 rail for IC16.
- What's the purpose of IC16 if we already have a diff buffer (IC18) that provides sufficient current (60 mA = 3.0V @ 50 Ohm)?
- PPS_O is 0..3.3V. Gain of AD8009 is 2x. The opamp will be overdriven (AD8009 V+ = 5V).