LM2904B-Q1：运放精度和收敛问题咨询

chengdp

Prodigy 70 points

Part Number: LM2904B-Q1
Other Parts Discussed in Thread: TINA-TI

你好 E2E：

我们有个绝缘检测电路，用的2904B的运放，调理电路电阻比较大有750kΩ，如下面仿真图所示。应用存在以下问题：

1.精度不是很好。

2.用这个参数结合官网的spice模型进行Simetrix和LTspice仿真，仿真不收敛，中间会卡住。

麻烦帮忙校核下这样应用，考虑运放的偏置电流、失调电压电流后对精度的影响以及仿真不收敛的原因。谢谢！

over 2 years ago

0 Gerasimos Madalvanos over 2 years ago

TI__Mastermind 33723 points

Hello Chengdp,

The E2E forums are an English forum, I will do my best to answer your question with translation software, but there may be some errors in the translation.

Our models are developed for PSpice and for TINA-TI, and we provide the netlist so that you may use them in other simulators, but we do not evaluate performance across all simulators.

I would recommend testing this circuit using TINA-TI or PSpice for TI, which are both available for free at the following links.

TINA-TI: https://www.ti.com/tool/TINA-TI

PSpice for TI: https://www.ti.com/tool/PSPICE-FOR-TI

Best,
Jerry

Amplifiers

Amplifiers forum

LM2904B-Q1：运放精度和收敛问题咨询