Part Number: DAC8820 Other Parts Discussed in Thread: OPA227 , , OPA827 , OPA828 Data sheet recommends using OPA227 with the DAC8820 due to its low input offset voltage (+/-5uV). However, OPA227 slew rate (2.3V/usec) is too slow . I have searched for…
Part Number: OPA828 Other Parts Discussed in Thread: OPA627 , OPA140 , OPA2828 , OPA827 Hello,
We have legacy TIA for photodiode that was using OPA627. TI lists OPA828 as being a "drop-in" replacement for it however after just swapping OPA627 to OPA828…
Srinithi,
This is a somewhat unusual circuit for amplifying photodiode signals. Normally, a transimpedance amplifier configuration is used for this purpose. Here is a simple document explaining a transimpedance circuit operation: Transimpedance Amplifier…
Camille,
Thanks for the nice feedback. I'm going to close this ticket for now, but I will continue to update the series. I will reactivate the thread when new content becomes available. Incidentally, since you mentioned you are looking at TIA amplifiers…
Part Number: OPA828 Other Parts Discussed in Thread: OPA827 , Hello,
Our customer try to evaluate OPA828 over OPA827 on their engineering sample board for 2020 MP EE.
But OPA827 package was VSSOP, we can not find OPA828 VSSOP sample.
Do you have…
Well John, couple of easy comments and cautions, The THS4531A is the better DC offset version, here is an old spec comparison I found - the THS4561 is probably a better part, but 3X the Icc. But the faster THS4561 might be able to do the entire gain in…
Part Number: OPA4192 Other Parts Discussed in Thread: OPA192 , OPA2156 , OPA828 , OPA827 , OPA992 , OPA323 , OPA4323 , OPA322 , INA851 , I'd like to know the circuit topology when the settling time is specified. The Pspice model I use from the website…
Part Number: OPA828 Other Parts Discussed in Thread: OPA827 , TINA-TI Dear Ladies and Gentlemen,
What is the expected gain error at 100 kHZ and 1 MHz of the simple voltage follower with OPA828 op-amp? I simulated it with Spice and got 60 ppm at 100…
Hi Vishal,
This is happening because the input common mode range for both the OPA827 and OPA211 are violated in this test case. OPA211's input common mode range extends from 1.8V above the negative supply to 1.4V below the positive supply. OPA827's…
You bet Daniel,
There are PA parts that match the analysis I have presented here exactly - I recently used the OPA827 as a vehicle in that July 2020 article on low frequency and popcorn noise in Audio Express. Here is that excerpt, everything matches…
