Thanks Paul. What I understood from the cct, E-pot (U3) doing the same job you explained in the LMP7721 Eval. board manual section 4.2.1 Vref and Vbias. is it?
Still my electronics knowledge is not enough to understand what is Amplifier biasing means…
I ues this op-amp with pH sensors. In this topic, http://e2e.ti.com/support/amplifiers/precision_amplifiers/f/14/p/214032/859500.aspx#859500, Mr. Paul said me :
"The "Guard" trace should be at a potential equal to the average of the input voltage. Since…
Other Parts Discussed in Thread: LMP7717 , OPA320 , LMP7701 , LMP7715 Hi,
We are using LMP7717 as Unity gain amplifier. The datasheet says if gains<10 , op-amp should be externally compensated. But the values are mentioned based on Rf as non-zero…
Ni Norbert,
yes, this makes sense.
With a ground plane under the input signals unequal stray capacitances to the ground plane can convert common mode noise into differential noise by forming an imbalanced voltage divider. When using a common mode…
Hello Krasimir,
I am simply modifying your attached circuit from above in Tina simulation. There are many ways to bias and compensate the thermocouple sensors. Typically, if you want to measure accurate temperature, TCs will require cold-junction compensation…
Part Number: LMP7721 Other Parts Discussed in Thread: TINA-TI Hello,
Was hoping to ask for some clarifications to section 7.3.7 Input Protection of the LMP7721 datasheet (p. 17). Specifically having troubles with comprehending the significance of the…
to User473,
I searched all the op amp portfolio with the parametric search (precision, general purpose, and high-speed). There are 6 options with temperatures of 150C and above (see attached). The best match is the OPA211-HT (210C max). This is the…
