I require someone skilled at data acquisition systems to do a PCB schematic and PIC program for a low noise data acquisition system with the following basic requirements:
1- 0-5V operation (+/-5V will be a nice-to-have)
2- Sampling rate at least 2 MSPS (10 MSPS will be a nice-to-have)
3- ADC resolution at least 16Bit
4- 2 channels
The application is for the analysis of coil decay curves. This is similar to MRI machines and pulse induction metal detectors. The sampling period is in the order of 3 to 6 us.
The design must be based on components that have specifications equal or better than the following:
Pre-Amp (Gain=100): OPA211 (http://focus.ti.com/lit/ds/symlink/opa2211a.pdf)
ADC : ADS8481 (http://focus.ti.com/docs/prod/folders/print/ads8481.html?lpos=See_Also_Container&lid=Alternative_Devices)
Voltage Regulator : REF5010 (http://focus.ti.com/docs/prod/folders/print/ref5010.html)
PIC: DSP30F2020 @ 30 MIPS
PIC software must preferably be written for CCS compiler
PCB design must be compatible with CadSoft Eagle
1- PCB schematic (PCB layout not required)
2- PIC software code to initiate ADC and read at least 60 ADC data points into an array
If you bid, please send me examples of similar work that you have done.
If you can do PCB prototype board manufacture and testing, please mention that in your bid.
Good luck in bidding!