??? 01/25/08 11:20 Modified: 01/25/08 11:20 Read: times |
#149943 - More details + missing detail from datasheet Responding to: ???'s previous message |
Oliver Sedlacek said:
If you can tell me the following, I can recommend something:
Supply voltage Closed loop gain Bandwidth How close to the negative rail does the input go How close to the positive rail does the input go Bias current Offset voltage Offset voltage drift Kai Klaas said:
...if an application demands input bias currents of less than 1pA. Usually you will need some protection schemes, which can heavily increase these currents. Also, if not the purest materials are used leakage across the board will be decades higher. You often can measure the moisture with such a board: The more moisture, the higher the surface leakage currents...
Ap, would you like to tell us what you want to build? Kai I am trying to figure out how to condition this http://www.ist-ag.com/english/p...14smd.html I dont get why the datasheet for TLC271 doesnt mention (Input impedance in differential / and common mode) for TLC271 , it says direct : " High Input Impedance...10 raised to the power 12 Ohm. http://focus.ti.com/docs/prod...lc271.html AP |