AD9273
Production
The AD9273 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a low noise preamplifier (LNA) with a variable...
Datasheet
AD9273 on Analog.com
Hi all,
I am currently working with AD9273. In Page 22 of the datasheet, it says that "It is highly recommended that the LG-x pins form a Kelvin type connection to the input or probe connection ground."
May I ask what does a Kelvin type connection means? I am only aware of a Kelvin connection when measuring resistance accurately by carefully calibrating out the effect of lead resistances, aka 4-wire measurement. I have no clue what a Kelvin connection means in this context.
Thanks,
YH
Figure 39 from the datasheet (above) shows the
concept -- note that the ground connection
of C_LG occurs at the shield of the transducer
cable, rather than being attached to a ground
point nearby the LG-x pin. The goal is for the
LG-x input to see the same ground value the
transducer sees.
Figure 39 from the datasheet (above) shows the
concept -- note that the ground connection
of C_LG occurs at the shield of the transducer
cable, rather than being attached to a ground
point nearby the LG-x pin. The goal is for the
LG-x input to see the same ground value the
transducer sees.
