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ADV7441A Power Supply architecture

Question asked by KevinL Employee on Apr 13, 2010
Latest reply on Jul 26, 2010 by ALaMothe

The ADV7441A has 6 power domains: 4 @ 1.8V and 2 @ 3.3V. The ADV7441A Video Input Module design uses a separate LDO for each domain, with an EMC filter included on each. Customers would like to combine supplies where possible to reduce cost,... Please provide some guidance on what supplies can be combined, the need for the EMC filters and other strict design rules that should be followed for the power supplies.