Good afternoon,
I've recently incorporated the AD8229 part into a prototype design, we are using this part in several places. I was a bit shocked when I saw the commercial part was priced at $220 per part. Needless to say, I'm looking for alternatives…
I have been using the Analog Devices version of Multisim for a while and just downloaded version 12. I modeled a simple amplifier using the AD8429.
Signal on the negative input, positive input grounded, +/-15V, gain resistor of 60.4 ohms for a gain of…
低噪声仪表放大器AD8229
专门针对高温工作环境而设计非常适用于地下钻探作业，采用介质隔离工艺，以避免高温时产生漏电流。所选设计架构可以补偿高温时的低VBE电压。尤为擅长测量微小信号，可提供业界领先的1 nV/√Hz输入噪声性能。此外AD8229具有高共模抑制比（CMRR），可防止干扰信号破坏数据采集。CMRR随着增益提高而提高，能够在最需要的时候提供高抑制性能。并且AD8229还是目前最快的仪表放大器之一。采用电流反馈型架构，能够在高增益时提供高带宽，比如G = 100时，带宽为1.2 MHz…
A little more information for other people facing a similar problem. I was able to get my output noise measurement down to 162 nV/rtHz ( I had some extra resistance at the input that wasnt exactly matching the circuit above).
I also noticed the datasheet…
Hello,
I tried several models for my design (put under NDA). Best result was with AD623. However, I wonder if there is an instrumentation amplifier with the same architecture as AD623 is available with less noise.
What I believe to be needed is not normal…
Hi dforero,
I think I see where the confusion lies. Table 4 calculates equivalent device hours at 55C by the formula Ndt=Nd*Nh*At. From the table, Nd*Nh=924000 (device-hours) and At=77. Therefore equivalent device hours is 924000*77=71148000.
It sounds…
