Part Number: OPA659 Other Parts Discussed in Thread: OPA859 The OPA659 data sheet specifies the current noise as 1.8fA/rtHz at frequencies up to 10MHz. Does the current noise increase above 10MHz?
Part Number: OPA659 Other Parts Discussed in Thread: OPA657 , LMH6629 , OPA857 Hi Team,
The customer is using OPA659. The customer uses the Figure 39. Wideband, Low-Noise, Transimpedance Amplifier (TIA) of the datasheet reference circuit for his
design…
Hi Akos,
Understood. It almost looks like the frequency response of the differential probe is peaked up which is leading to sharp edges in the square waveform. Would it be possible for you to increase the size of the inverting input capacitor to 9pF…
Hi,
You could use the driven guard ring as mentioned in Figure 2 for your application, although I think it might be suitable for non-inverting gain of 2. For unity-gain buffer application, you might be able to use the below guard ring circuit where…
Part Number: OPA659 Hi,
The datasheet for OPA659 states, on the first page, that the unity gain bandwidth of the opamp is 650 MHz. Then, on page 3, OPA659 is listed as a "related part" (!) with a bandwidth of 350MHz.
Also, the label of the bag of…
Other Parts Discussed in Thread: OPA659 , TINA-TI Hi,
I receive the following question from my customer.
"Is there any important point of matter when the OPA659 is used as attenuator?"
I think that there is only general point., for example the feed…
Hi,
If you are interested in sweeping the frequency to extract the phase information, then I would suggest Bessel filter as it presents constant group delay (constant phase shift) across frequency. If not, then I would suggest going with the Butterworth…
That does look like a better option. We'll hold off on purchasing another opamp until I look at the output of the OPA659. Thanks for the help. I'm sure I'll have other questions down the road.
-Alex
Hi,
Can you please try to elaborate why using +/-5V power supply was not possible to calculate Rv and Cv? Also, it would be helpful if you could attach a schematic of your simulation circuit that does not work.
Looking at the bootstrapping technique…
Other Parts Discussed in Thread: OPA659 I am designing a pcb for high speed 3 stage amplifier...but i can not find the footprint for opa659 ic..where can i find it?
