Hi Philippe,
I've heard back from the TI modeling folks that they will update / correct the LM6172 model and have placed it in their queue for new development. Unfortunately, I don't have a proposed completion date to share.
I will post any updates…
Hi Ken,
Please keep in mind that the THS4211 quiescent supply current is as high as 24mA (=10V * 24mA= 240mW). So, you would need to add the load-related dissipation to this value. Assuming the output voltage is at ground (0V) when you are sinking 50mA…
Hi Jeff,
I think your issue is that the OPA657 1st stage has peaking / oscillations the way you've configured the circuit.
The 1pF across your input current source is being "seen" by the 5k feedback resistor and that's causing enough phase shift to…
BTW, the low pass filter on the input and the notch filter at the output that I have noted are part of our test setup and they are self-contained / custom-built filters that we have for measuring distortion. They have an input and an output port each…
Hi Satya,
To find the contribution of each resistor, you could possibly replace it with a noiseless one to see if it matters or not? Here is an Analog Wire post which describes how to do that. You could download the noiseless marco there as well (which…
Hello,
I was curious to make sure that Tina-TI can perform a time integral / integration on a waveform using the technique / command that I posted last night. I've now verified that this works correctly, as shown below where the straight line is integrated…
Hi Toshi,
I've edited the Noise Figure vs. Frequency plots (on the right) with correct notes to show mid-gain value (~4.5 V/V) when VG= 1V.
Regards,
Hooman
Hi Vish,
I've used the 2nd circuit from your link to get the Open Loop Gain / Phase response of the LMH6629, and it looks reasonable to me:
Here is the TINA-TI file associated with the image above:
/cfs-file/__key/communityserver-discussions-components…
Hello Kato,
The larger (6.8uF) cap does not need to be duplicated at every instance of the LMH6703. However, I'd still recommend the 0.01uF caps for every device.
Regards,
Hooman
