Hi Rich,
Sorry about not updating you earlier, as I had promised!
Please find the links to the TI Precision Labs below:
www.ti.com/.../precision-amplifier-precision-labs.page ;HQS=hpa-pa-opamp-tipl-pr-lp-en
The stability content is included…
Hi Samir and Yu,
I'm jumping in here. :-)
I recommend that the 200ohm resistor of the 2nd stage (RG) be physically moved right to the output pin of the 1st stage (if not already). In other words, move the resistor physically close to the 1st stage…
Hi Charlie,
To answer your questions:
1. The disable_bar pin current is up to 350uA (in low state). So, if you are driving all three of these together, you need to allow for 3x (or about 1mA). To limit the voltage on this pin to below the low threshold…
Hi Ken,
With a larger feedback resistor, parasitic capacitance (i.e. board layout, component) produce more prominent / lower frequency poles or zeros compared to a lower feedback resistor value. So, lower RF is better. At some point though, with a reduced…
Hi Kenneth,
I've not followed every detail in this thread, but I had something to add just in case:
In the schematic you have attached, I see that you've changed the 1st stage from your IR detector (U8) from the LMH6629 to the THS4271 (probably because…
Hello,
I don't see any issue with what you are proposing (operating off 5V total supply with VEE (or -Vs) at 200V). As long as all the op amp pins (all 4 input pins) are all "transposed" to this 200V potential, the device won't know the difference. …
Hi Chao,
You should look at the output differentially, Otherwise, you'd only get 1/2 the output power. One way would be to look at the ADC acquired data and correlate it to it Full Scale value. Example, assuming your 8 bit ADC (256 discrete values)…
Hi Karsten,
Your understanding is correct.
There will not be any reliability issues as long as you don't subject the device to less than -65C (storage temperature limit).
Regards,
Hooman
Hello again Stomp,
Just be careful with exceeding the device power dissipation which may possibly happen easier at this lower operating frequency if you don't keep close tabs on the safe waveform duty cycle.
Regards,
Hooman
