AD8226
Production
The AD8226 is a low cost, wide supply range instrumentation amplifier that requires only one external resistor to set any gain between 1 and 1000.
The...
Datasheet
AD8226 on Analog.com
ADM7160
Recommended for New Designs
The ADM7160 is an ultralow noise, low dropout linear regulator that operates from 2.2 V to 5.5 V and provides up to 200 mA of output current. The low 150...
Datasheet
ADM7160 on Analog.com
Hi,
I am using AD8226 with AC coupling, supplied with single supply 3V3, with a gain of 10.
Both input are tied to 1V8 with 470R resistors.
The reference pin in set to 1V8 too.
The 1V8 is provided by an ADM7160 LDO
If i connect the reference pin, the LDO jumps to 2V5....
I i unsolder the reference pin it goes back to 1V8... and the floatting ref pin is at 2.5V
everything else has been removed from the circuit, and the amplifier in itself works properly...
it has now been tested with 3 AD8226armz, and 1 AD8226brmz, from different suppliers, on different boards, and 2 differents ADM7160 parts
never seen anything like this in 15 years of instrumentation.
Any thought?
Many thanks
