The GBP definition, and what you need for TIA design, is the single pole projection to 0dB. Get that by going to the Aol=40dB point and multiplying that frequency by 100X, 1.59GHz here,
This recent article tries to explain this confusion, and also some…
Other Parts Discussed in Thread: OPA846 Hi Team,
A customer is looking for a part with an open-loop gain greater than 20dB or as high as it comes at 20MHz. with low noise of 1nV/RT-HZ or up to 2nV/RT-HZ.
Can you please help?
Regards,
Marvin
Other Parts Discussed in Thread: OPA380 , OPA846 Dear sir,
I am a student and doing on an optical sensor project.
Figure 1. whole circuit.
I choose OPA380 as the TIA, transimpedance gain is set to 1K, choose OPA846 as the post amp with gain of 470, when…
Other Parts Discussed in Thread: OPA846 , TINA-TI Hi All, We'd like to ask the measurement of phase margin and gain margin on OPA846. <Question> Please refer to attached file.This is the result of phase and gain simulation using OPA846. 2678.Phase…
Hi Minglai, We have six amplifiers available in DIE form: OPA857-DIE, OPA656-DIE, OPA657-DIE, OPA846-DIE, THS3001-DIE, and OPA2835-DIE.
The OPA2835-DIE is a dual amplifier, with Iout= 40mA max, and supports a Vs=3.3V.
Other Parts Discussed in Thread: OPA846 Hi everybody,
I'm using an OPA846
for a transimpedance amplifier. I would like to simulate my system
using PSpice, but I get an error. I've tried to simulate it with other amplifier models and it works.…
Hi Sima,
Thanks for your recommendations and the powerpoint.
Actually, there is no amplification stage before opa846. When a photon avalanche occurs, the current flows to the shunt resistor (Rs).
Here i leave a basic photo of how it is at the moment(withouth…
Part Number: OPA828 Other Parts Discussed in Thread: OPA3S328 So I had gotten involved in what is out there in compensating a transimpedance design, There is a newer one I will mention at the end that seems very accurate, wondering what equation sits…
Hi Luis,
Vin would be 12V maximum, but typically 6V. So the max Vcm is around 12V.
Of course the BW should be the highest possible, but with 5Khz we should be good.
Fast switch is only needed to minimize voltage drop on 10 Ohm resistor. Typically use…