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Hello,
I am on project about scaling human weight. I will use Loadcell and make platform scale. I will use an amplifier to amplifify signal level for measuring in 12 bit ADC on MCU.
Could you refer me a instrumentation amplifier, which is suitable for my needs. I want to amplify the output of LoadCell 500 - 1000 times(gain 500-1000).
Condition1 exc+ : 5V exc- :GND 500kg loadcell / desired resolution 100g
Loadceel produces 2uV for 100g and 10mV for 500kg
Condition2 exc+ : 12V exc- :GND 500kg loadcell / desired resolution 100g
Loadceel produces 4.86uV for 100g and 24.3mV for 500kg
LoadCell: Zemic L6G
http://www.zemic.nl/Products-Single-Point-load-cells/product-l6g-load-cell.html
Thanks
Hi,
If you would like to use your load cell in the maximum range you will need PGA
For 5V condition please look at PGA308 or PGA309.
As well, alternative for MCU ADC could be ADC with integrated PGA like ADS1130 (18-bit ADC) or ADS1230(20-bit ADC)