Are there power supply ripple or noise requirements for MAX5860

There are no datasheet requirements for the noise or ripple on the power supply inputs; however, Maxim recommends specific LDOs for all of the analog supplies. The recommended LDOs are shown below: AVDD33 -> MAX1793 AVCLK -> MAX1793 AVDD18 -> MAX8902A VDD10 -> MAX15023 VDD18 -> MAX1793 VDD18L -> MAX1793 VDDDLL -> MAX1793

What is the recommended power sequence for MAX5860?

There is protective circuitry within MAX5860 that protects against improper power sequencing; however, the recommended power-on sequencing is shown below. The recommended power-off sequence is the reverse order of the power-on sequence. For a 1.8V common supply source, the recommended power supply sequence is: AVDD33 1.8V (AVDD18, AVCLK, VDD18, VDD18L, and VDDDLL) VDD10 For separate supplies, the recommended power supply sequence is: AVDD33 AVCLK AVDD18 VDD10 VDD18 VDD18L VDDDLL