Part Number: LMH5401 Hello
Please let let me know if the LMH5401 has been characterized for Rf = 1K or 2K.
What will be the 3db bandwidth at G =1 and or g = 5?
Will a compensating Cf need to be added?
Hi Michael, sorry for the delay in response. I have updated my simulation to include the PD capacitance and trace capacitance. I am using a 0.9pF FB capacitor to improve stability, calculated using a TI app note. Running the AC analysis shows instability…
Part Number: LMH5401 How much do you expect the CMRR to change vs. temperature/Rload/gain? I'm designing a circuit with tight CMRR specifications,and wanted to get an idea of how much variation I should expect to have.
Thank you!
Part Number: LMH5401 Out of curiosity, was this ever measured? If not, would you be able to possible provide me with a simulated current (and voltage, if you have it) noise model out to 8 GHz?
Hi Yangang,
The LMH5401 is not stable for unity gain in the standard EVM configuration. However, it can be achieved by few changes. The excel calculator you are referring doesn't account for lower gains. You can follow the below reference design when…
Hi Hruday,
thanks for getting back to me on this. I asked this question with a limited understanding of how FDAs actually work. I initially thought I could set up the FDA in the same way as a conventional (single ended) difference amplifier, but after …
Part Number: LMH5401 Other Parts Discussed in Thread: LMH3401 , Dear team,
May I know do we have the below data of LMH5401 and LMH3401?
1. Gain vs. Frequency ( from10kHz~10MHz) 2. OP1dB vs. Frequency ( from 10kHz~10MHz)
Thanks.
B.R.
Lucas
Part Number: LMH5401 Other Parts Discussed in Thread: TIDA-00659 , TINA-TI , OPA855
Hi experts
How are you?
I am trying to design a two stage cascaded amplifiers to get desired gain with 3dB bandwidth of around 800Mhz
LMH5401 is the FDA chosen.
Circuits…