So I went ahead and looked at the settling plot in the OPA2626, this is almost certainly a slew limited settling time, would be much faster if the input edge was slowed to stay out of slew limiting. Little history,
This is a dual, non-power control, version…
Part Number: ADS8900BEVM-PDK Other Parts Discussed in Thread: OPA625 , THS4551
Hello TI Team,
I ordered two ADS8900BEVM-PDK evaluation boards from digikey at the end of july 2021 and unfortunately received the revision A which has no test point header…
Part Number: OPA378 Other Parts Discussed in Thread: REF3125 , OPA625
Hi team,
My customer want to use the reference REF3125 to drive 0-5mA (PWM, 4.8khz), Do we have some recommend circuits and amplifier to support the requirement? if we have the simulation results…
Hello Patrick,
The solution on top with the PGA281 buffered with the OPA625 in the inverting configuration could work. However, please place an R-C-R filter between the PGA281 and OPA625 inverting stage of 50-Ohm-10nF-50ohms and 1nF common-mode filters…
Hi Shane,
have you thought about using the OPA837 or OPA625? These OPAmps have very low distortion specs at 100kHz.
By the way, intermodulation can be identified by the appearance of sum and difference frequencies.
Kai
Hi Erik,
You can use this method, but the bandwidth of the amplifier must be high to support the fast settling times for the input sampling capacitor.
For the ADS8900B converting at 1Msps, you will need an input amplifier bandwidth close to 22MHz, which…
Part Number: ADS8861 Other Parts Discussed in Thread: OPA625 Hello,
When using 10 ADS8861s on the same board with REF60xx, can one REF60xx be shared with all 10 ADS8861s? Or each ADS8861 requires each separated REF60xx?
Regards, Oba
Part Number: ADS8900BEVM-PDK Other Parts Discussed in Thread: ADS8900B , THS4551 , OPA625 Hi,
I have the EVK up and running. It looks like its setup with + and - inputs grounded and the common mode reference set to 0V. I see a nice and low noise histogram…
Hi Keith,
Thanks for your answer.
I will check with hydrophone manufacturer about the output voltage and get back to you.
The built-in preamp is BII- 1092 and it has 30 kHz highpass filter. - : https://www.benthowave.com/products/Specs/BII-1090Datasheet…
Part Number: ADS1256 Other Parts Discussed in Thread: REF5025 , OPA388 , OPA625 , OPA350 , ADS1255 , ADS1259 , PGA280 , ADS9110 , ADS8881 , ADS1260 , REF6125 , OPA320 , ADS127L01 Hello,
I have few quiestions related to ADS1256 Vref driving circuit.
1. What are the…