Part Number: OPA2140 Hello Team,
My Customer is using the OPA2140 as a positive amplifier for low noise DC source. They do not found any information about input current noise in the datasheet. They did some tests and found out that the noise depends dramatically…
Part Number: OPA2140 Hello，
Our customer used OPA2140 as 0~24mA current source, there is no problem during simulation, but actually, he met a question using PCB to test.
1) single 12V power supply, 0~2V input, and output 0~24mA, there is no problem.
…
Part Number: OPA2140 Hello,
We have a design where the minimum consumption on both amplifier power supplies (+/-12V) is a key design driver.
- What is the minimum quiescent current per amplifier to be considered ? At room temperature and in the whole…
Part Number: OPA2140 Other Parts Discussed in Thread: OPA2192 Hello,
I have some questions regarding OPA2140 used to
- buffer a 5V precision voltage reference to increase the load current
- invert the same 5V precision voltage reference to create a -5V…
Part Number: OPA2140 Other Parts Discussed in Thread: OPA145 , , OPA2145 Hi,all
In order to save one supply, I plan to use the +5V and the -15V which are available,as the supply of opa2140/opa145. So i want to know whether there are some problems with this…
Part Number: OPA2140 Tool/software: WEBENCH® Design Tools Hi,
I'm using Filter Design Tool to design an active low-pass filter which is also the ADC driver. The gain should be 0.25 to accommodate ADC's input range. However, I found that the smallest allowable…
Hi Mart,
The circuit front-end does not appear to be attached to the post, however, per the description, the board layout requirements are strict and the board design is very compact; which makes it possible for the RF noise disturbance to be coupled through…
Part Number: OPA1642 Other Parts Discussed in Thread: OPA2140 , OPA827 , , OPA140 OPA827, OPA2140 & OPA1642 source impedance and distortion issue. Dear Sir/Madam, While reviewing the datasheet OPA1642, by chance, I learnt the specifications in chapter…
Part Number: OPA2140 We have realized a TIA card using OPA2140. We did the frequency response of the card. How can I characterize (practically) the circuit with respect to Noise. I mean I need to get the parameters like thermal noise floor, corner frequency…
Part Number: OPA2140 Other Parts Discussed in Thread: OPA140 , OPA191 I would like to know if there is any information about current consumption (assuming unloaded outputs) when OPA2140's inputs are beyond the normal operation range, especially closer…
