Shinizu-san,
A few years ago we evaluated the OPA334 output impedance in the disabled state. I had to search and find the data.
We back drove the OPA334 output pin with a dc source and swept its voltage over a wide range and measured current into…
Hello Ron Michallick ,
Thank you for the additional information. I'll keep a footprint for C5/C6 in any case.
I have three topics where I kindly ask you to weigh in.
Regarding op amp choice , you are suggesting OPA375 instead of OPA334. Do you suggest…
Zaid,
When an amplifier is not powered the output impedance will not be zero. In most cases we do not charactered the output impedance of devices in the off-state. To get an amplifier with a high output impedance you may want to use an amplifier with…
Hi Vincenzo,
Thank you for your post, I can help you. What is the required bandwidth? As you know, we want to look for a low-power amplifier to not exceed the threshold that would cause the light bulb to illuminate. Here are a few of our low-power amplifiers…
Just poking around here and thought I would offer a suggestion. The cheapest solution is to add a current sense resistor in your circuit on the order of 1K ohms. Then get a very low offset chopper stabilized op amp like the OPA334 and use that to amplify…
Other Parts Discussed in Thread: OPA725 , OPA334 , LM7705 Hello all, can you use a negative supply and resistor to pull the output of a OPA725 to 0v, when the part has a +12V supply? I am referring to the same circuit as shown in figure 2 on page 8 of…
Hello Alejandro,
You can certainly connect the reference pin to ground. Generally the reference pin is connected to a voltage when amplifying a bipolar signal (e.g. bidirectional current sensing). I know of no significant performance impact if you connect…
Hi Mark,
First, on the Product page, scroll down to CAD/CAE Symbols, and you'll see links to CAD data for the device: Download
Or, the OPA334 datasheet has the land pattern included, page 25:
-Leonard
Other Parts Discussed in Thread: LM741 , INA114 , OPA334 , INA333 , OPA734 , REF200 Hello,
This is my first post so I hope I ask the right questions! Both questions are for the LM741 and INA114:
1. Can they take in a signal of 0.2-0.5uV with 30-500Hz…
