05.14.07
Thinking about new EFPD design
Had the presentation today, went well.
More thoughts about the new circuit. Been looking at the low power side this afternoon, found a small CR2032 is a great sized battery at 20mm diameter and it does quite well at 220mAh. [1298246 FEC]
But I dont think that would be very good as a system. As a stand alone product, I should let the company worry about the power source, so I dont have to worry too much about that. More to concentrate on getting the power consumption down and providing a simple triggor solution all on one tiny chip.
So I have found an awesome amplifier to go for the 1 chip EFPD in the form of the LMC6044 with a 2fA bias current and 10uA/amp, only for £1.96 [9494626 FEC]. Just needs a power supply of 5V, and its single supply so I will also have to have a reference there.
Might be a nice idea to fit all this onto a card, or a big DIP package or something.
For a standalone product, the size doesnt matter as much becase a lot of the space will be taken up from batteries. Cost will take presidence here.
Finally also made a new filter (AGAIN) and this time its a 4th order with some cool standard components. It reaches about -65dB at 50Hz which is very good.
Phil