Part Number: REF6141 Other Parts Discussed in Thread: DDC316 , REF3140 , , OPA350 , REF35 , REF50 Good afternoon,
In one of my designs I am using a DDC316. In the reference schematic in the datasheet of the DDC316 (p.19 Figure 15), an external reference…
Part Number: DDC114 Good day,
In our equipment, we are using DDC114 ADC. Currently, we are trying to minimize the noise and improve the long-term stability of data acquisition.
For reference voltage generation we have been using the recommended circuit…
Part Number: REF3140 The datasheet of REF3140 (sbvs046d.pdf) shows a note in the package outline page (pg 25) recommending to "Reference JEDEC registration TO-236". The JEDEC specification however shows two options: AA and AB. Which one applies to the…
Hi guys,
One of my customers is seeing an output voltage overshoot during startup, but only when the ambient temp drops to below about -30degC. Is this known behavior and what do you suggest to eliminate it?
Thanks!
Jason
Part Number: DDC232 Other Parts Discussed in Thread: REF3140 We have a custom-designed photodiode readout board built around a DDC232. We have been supplying power directly to this board but need to move to supplying it from the FPGA we use for the readout…
Hello Mark,
Please find below the comparison table between the various reference chips.
These were some of the parts that we looked at and we have used REF3040 and LM4140 in our higher channel density devices.
LM4140
REF3040…
Hi Christo,
I don't think I will be able to provide you with PCB track resistance, that is more of a spice optimizer problem and not a device/application issue.
In your application I can offer some advice or at least pose some questions. The idea…
Part Number: REF5040 Other Parts Discussed in Thread: REF3140 This customer has failed EMC testing and identified the REF5040 as being the culprit. Once the device is replaced with REF3140, the board passes the test. Can you please provide any insight…
Hi Matej,
Figure 2 in the ADS2152 datasheet shows an example REF3140 and OPA350 reference circuit. However, I would actually recommend using a REF5040 or REF6x40. These references were released after the ADS1252 and are well-suited for high-resolution…
Brad,
In test mode, there isn't much that affects the noise - the reference is the main contributer. To a much lesser extent: the power supplies maybe, CLK jitter maybe, the point in time during the period that the data is read back (between /DVALIDs…
