Hello, I’ve put out for a quote for a shunt monitor breakout board based on the LMP8481.
I’ve tried making in flexible in a number of ways.
-The LMP848x chip is powered either from the DC source or from 5VDC by usb or headers. The chip is rated at 85V
-The refA+B inputs can be accessed for bidirectional monitoring with a chosen ref voltage. (refA+refB) / 2 must be less than 6V.
-Pads for shunt, mounting holes, and 3.5mm screw terminals for different options on input. Pads are compatible with all EBW series manganin shunts, plus many more I’m sure.
-Various jumper locations for access.
I’ll have a few basic filtering capacitors SMC soldered to the board with the chip. I was going to hand-solder any Vdiv resistors, shunts, screw terminals (3.5mm pitch), and other connectors and jumpers as I need.
I’ve got to get busy finding my next £££ job in construction, my usual thing, so I hope this little breakout is useful.
Any feedback welcome. There are a number of places where DC pins are in proximity to GND pins. I think the best I can do is warn of the dangers when it comes to DC shunt monitors, especially if connected to a source that can deliver huge current, Lion battery packs, solar arrays, turbines… many things really.