As Greg mentioned most of the diodes are just protection diodes. D1, D2, D3, D4, D5, D7, D8 , they are not needed for the functionality of the power supplies. I think they have been placed there in case someone accidentally shorts things out while probing…
if you have a schematics or block diagram of your 24V center tapped and 12V supply that would help me better understand what you are trying to do.
The best way to determine the external components needed for your design is to download the ADP1864…
I am using AD8652 for my audio application.The power supply for the Opamp is from Synchronous buck controller 12-15V dc input to 5V output.Since the Op-amp has Low PSRR at >300K.Is there any recommended filter circuits for powering the Op-amps…
Thanks for your reply.
What I was thinking was to only apply the 12Volt to Vin of the ADP1864. All other voltages would remain the same as per eval board schematic.
ADSP-21489 EZ-Board has a power section using ADP1864 and SI7601. SI7601 is obsolete, can you suggest a replacement part? I'm designing my own board and using this schematics as reference.
Perharps TPS54325 could replace both.
Hi All,I want to know how to design the ADSP-21489 Power Circuit simply,and I want to know why the Time Delay device(ADM1085) is needed in the VDDINT circuit.
The DSP has a specific power-up sequence like as below.- Power Up Sequencing Timing Requir…
I'm designing a custom Blackfin board and basing it on the BF 533 EZ-KIT. I need to put the system to sleep and have absolutely minimum quiescent current draw for a 1:10 ratio (i.e. awake and processing for 10% of the time). On the BF 533 EZ-KIT an ADP1864…
Does anyone experienced with Power Up Sequence for ADSP-21489?
I mean i try to look for any order which the two input power (VDDint and VDD ext) must be turn on.
In the ADSP-21489 Data Sheet p.23 there is a timing recommendation for the start-up…