Dear Alfred,
I want to design a low pass filter and a high pass filter:
50kHz with ripple 0,3dB
And as fast down as possible to -100dB
For the High pass: (at the -100dB) stopband 17kHz is probably the best I can get for the sharpest result at…
Deepak,
I see two problems.
1) The LM339 common mode range does not include VCC+ 2) The comparators need an offset of about 15mV added. So 0mV input is off and 30mV is on.
High voltage (>6V) comparators with rail to rail (or VCC+) common mode…
Hi Marceli,
the output current of XTR111 must be limited to less than 50mA or you risk that the XTR111 becomes damaged. The XTR111 is not designed to output a current of 100mA.
I would think about using the improved Howland current pump:
3835.snoa474a…
Part Number: OPA547 Other Parts Discussed in Thread: TINA-TI Team,
We are using the OPA547 for an "improved Howland current pump" to turn voltage to a 0–20 mA output.
It works ok until a given input voltage level. When this input voltage is reached…
Hi Faisal,
A complete discussion of the Improved Howland Current Pump is covered in TI Application Report, SNOA474 (AN-1515), A Comprehensive Study of the Howland Current Pump. That should answer most any question you may have about the fundamentals…
Hey Dan,
LM120K-5.0/883 is indeed obsolete. I've attached the PDN.
We don't have an exact P2P replacement so I'd recommend the UA79 series as the closest alternatives.
~ Aaron
PDN 200824.pdf
