Part Number: OPA392
Dear Team,
we are looking for a opamp in smallest form factor like DCK or smaller
It will be used as buffer ( voltage follower ) foa a analog voltage from temperature IC
Requirement
-> CMOS buffer with a maximum of 20 pF input capacitance
-> input voltage to noninverting input can be from 0.9V to 1.5V
What device would you recommned?
Best Regards,
d.
Hi Chuck,
from the temperature IC i only have this two specs
-> CMOS buffer with a maximum of 20 pF input capacitance
-> input voltage to noninverting input can be from 0.9V to 1.5V
0.992 V @ -30 deg C
1.422 V @ +70 deg C
this signal needs to be buffered.
Analog signal (0.9V to 1.5V) -> OPA392 ( buffer configuration) -> 100R 10nf (Anti Aliasing filter) -> ADC input ( 100R , 3pF)
I will either supply the opamp with 1.8V or 5V for V+ and GND for V-
The size matters, smaller better but maybe avoid BGA and X2SON.
OPA392 has good noise specs...
Maybe device package where you have different pin compatible devices ( it is not a must)
Also the same OPA will be used on a different place for bias reference for ADC
1.8V -> resistor devider ( 2k61 / 1k) -> ~ 0.5V -> OPA392 ( buffer configuration) -> Riso 100R -> 100nf to GND -> ADC input ( 100R , 3pF)
Supply for opmap is 1.8V
Best Regards,
d.
