I attached a TINA file with the op amp models in them.
You only require 68V/usec slew rate, and a gain of 20V/V,
look at the OPA684 for a +/-5V low power solution.
Well Shota,
The CMRR for a CFA arises from the buffer gain across the inputs being slightly <1. THe Buffer gain in the THS3491 is very close to 1.0000 due to the very high output impedance current sources driving the buffer transistors. The previous highest…
Part Number: LMH6702QML-SP Other Parts Discussed in Thread: LMH6702 , THS3217 , THS3215 , VCA820 , OPA695 , THS3491 , OPA683 , OPA684 We are using the LMH6702 for an aerospace application and would like to achieve the best CMRR available. I understand one of…
Hi Ronald,
thank you for your advice and sorry to bother you so much.
I have tried many times and finally i added a -5V as source for OPA684 and left 8th pin of OPA684 open. I think it works now but not so well as follows. The two inputs are 5mV and triangular…
Other Parts Discussed in Thread: OPA684 , OPA2684 , LMV7239 , LMV7291 , TINA-TI , LMV7271 Hi E2E,
My customer is simulating the OPA2684 and the OPA684 in TINA. The sim works fine until he imports the LMV7239 comparator. Once imported, TINA fails to find an…
Update from the customer:
Restarting does not help but I think it has something to do with the parts I use. Right now I just ran the simulation three times and it runs with valid outputs. However if I change the op-amp in the post amplifier circuit it…
All I know is that the input is applied to the positive terminal through an AC coupling capacitor and supply voltage is 5V.
The customer swapped the OPA684 for the OPA683 and it works! Would swapping the op amps truly fix the output or is it an issue…
Other Parts Discussed in Thread: OPA890 , OPA836 , OPA684 , OPA690 , OPA683 , OPA830 Hello ,
I 'm driving a 16bits SAR ADC (from ADI) using the OPA890. The driver consists of 2 single OPA890 to generate at the ADC inputs two signals in opposite phase with respect…
Other Parts Discussed in Thread: OPA835 , OPA836 , OPA2889 , THS4281 , OPA890 , LMH6618 , LMH6645 , OPA683 , LMH6723 , OPA684 do you have suggestion part to replace LT6233-10?
Hello Kevin,
I would start with the OPA684. It can achieve 120MHz at a gain of 10V/V on 1.7mA quiscent current with ±5V supply.
The next device would be the OPA694 and will achieve 200MHz at a gain of 10V/V on 5.8mA with ±5V supplies. It…