Texas Instruments OPA656

10 discussions on ElectronDepot about the Texas Instruments OPA656: what owners asked, what went wrong, and what fixed it.

What owners report

Separating high pass and low pass TIA output bands.

I have an assignment to design a transimpedance amplifier for a photodiode. The bandwidth is to be 40MHz, and there are to be two outputs, a high pass output above 20kHz and a low pass output below 20kHz all the way to DC. It is...

current amplifier or current to voltage op-amp

Hi, I want to measure very weak piezoelectric signal from a quartz crystal dete ctor that mechanically vibrate. Although I can simply measure the output using a preamp, such as SRS 560, i t seems I will need a "trans impedance amplifier" to...

replacement for 741

Hello, I was wondering if there is an "up-to-date" replacement for the741 op-amp. Someone said that a TL081 or LF156 will work in myapplication, but I couldn't find either in my Allied or Newarkcatalogs.The device I'm working on is called...

Photodiode TIA

I realise there is quite a bit of advice in this group on TIA's but ithought i'd save myself some time and get an off the shelf TIA,designed to work with PIN photodiodes in high speed applications.However i'm now confused. I'm only working...

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