Hello,
I plan to use the PGA309 for a number of Weigh Scale applications in a new product line and have a few questions.
1. Is the PGA309 recommended for new designs?
2. Do I need to use the One-Wire interface to write / read the internal PGA309 registers or can I do this with I2C?
3. If I connect an EEPROM to the PGA309 can I also have the system micro talk directly to the PGA309 or EEPROM using the I2C lines?
The system could have as many as 8 PGA309 & EEPROM pairs, so I need to keep them all isolated from each other; I plan to use a TCA9617 so when the system micro wants to access the EEPROM it enables the TCA9617 first. Do I need to use the TEST pin to accomplish this?
4. The Load Cells are 350 ohm, which is too much load for the EEXC output. Is there anything wrong with putting a buffer IC on this line to drive the load cells?
Thanks for your help.
Paul
