Tool/software:
The reason why I asking is because some opamps, despite being shown as bipolar in parametric search, have CMOS structures at the output
For example, LMV934-N has pure bipolar input circuits, but complementary MOSFETs at the output
PSPICE model form LM6144 doesn't give any idea because output simulated by voltage source
Is it possible to see internal schematic of this opamp?
Hi Alexander,
Unfortunately there is no simplified schematic to share for the LM6144. Looking at the input bias current I can tell that the input stage is in fact a bipolar stage. Looking at the swing to the rail of 5mV typical on the output and the fact that the output current vs output voltage curve are linear I can tell that the output stage is CMOS. In between the input and output it may be a mixture but based on the input and output characteristics we can tell that it is bipolar in and cmos out.
Best Regards,
Chris Featherstone
