Hi, I would like to ask what is the open loop output impedance of the OPA4348, I can't get this from the datasheet. In addition, I would like to know the calculation method or simulation(TINA TI, etc.) method of the closed-loop output impedance.
OPA4348: the impendence of opa4348
Wilton Zhu 提问时间: 2023-10-19 20:50:10 / 已解决 Part Number: OPA4348
如需获得 1个回答
Amy Luo 回答时间: 2023-10-19 21:14:42您好，
下面文档讲了怎样测量open loop output impedance 和 closed-loop output impedance
Operational Amplifier Stability - Part 3 of 15 RO and ROUT.pdf
对应的中文资料可以再下面帖子中下载：
https://e2echina.ti.com/support/amplifiers/f/amplifiers-forum/1046/ti?keyMatch=%E8%BF%90%E7%AE%97%E6%94%BE%E5%A4%A7%E5%99%A8%E7%A8%B3%E5%AE%9A%E6%80%A7%E5%88%86%E6%9E%90TI%E5%90%88%E9%9B%86&_ticdt=MTY2MDA0MzI0MHwwMTc4MTRiZmM5ZmYwMDIwM2U5N2E1OTg4NjUwMDMwNzMwMDRiMDZiMDA3ZTh8R0ExLjMuMTA3MDU4NjEzMC4xNTk4ODQ0NzQ3fDA
另外，E2E论坛有用户咨询了同样的问题，您可以看下E2E论坛的回复：
https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/846862/opa4348-output-inpedance-consult?tisearch=e2e-sitesearch&keymatch=OPA348%2520Impedance#