| ??? 03/28/06 04:15 Read: times |
#113279 - Location of Supply section. |
Dear Friends,
Untill now all my mixed sigal designs were mains powered in these products I used a suppy transformer with primary connected to mains and used two separate secondaries 9V each for generating separate 5V Vcc for supplying analog and digital sections as shown below. 
Now I am desisigning a small handheld device which is going to use a 7.2V Ni-Cd rechargeable battery. In this case in order to keep things simple and smaller I am planning to use common supply regulator / section for both analog and digital sections. But still want to use separate ground planes since I target 12 bit resolution from ADC [ in dsPIC ]. I am not able to decide what would be the best location to place the supply section i.e. linear LDO regulator so that it will give best results. I have marked three location where I think I can place it? Is it going to help if I use to separate regulator / supply sections for analog and digital [ battery is common ]? 
Thanks & Regards, Prahlad Purohit |
| Topic | Author | Date |
| Location of Supply section. | 01/01/70 00:00 | |
| Traversing the gap using a pi-filter | 01/01/70 00:00 | |
| Making a new dsPIC board. | 01/01/70 00:00 | |
| 7 AAAs better than one block | 01/01/70 00:00 | |
| 7.2V Pack | 01/01/70 00:00 | |
| for handheld/battery | 01/01/70 00:00 | |
| I am planning to use 700mAh rechargeable | 01/01/70 00:00 | |
| 7.2V block = 120mAh! | 01/01/70 00:00 | |
| 700mAh 7.2V block available here. | 01/01/70 00:00 | |
| transformers | 01/01/70 00:00 | |
| Screens | 01/01/70 00:00 | |
| How do you do it? | 01/01/70 00:00 | |
Manufacturer | 01/01/70 00:00 |