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What is the gain bandwidth product of the IC LTC6269/LTC6268 ?

Thread Summary

The user is designing a TIA for a photodiode with a 10MHz -3dB bandwidth and is unsure about the GBW to use for the LTC6268/LTC6269. The final answer clarifies that the 500MHz GBW is specified at 10MHz, indicating an open-loop gain of 50. For a 10MHz target, the user should use the 500MHz GBW. The accompanying answer references a design article for a TIA using a photodiode, suggesting Fig. 5 for further guidance.
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Category: Datasheet/Specs
Product Number: LTC6269

The Datasheet specifies that the GBW is 500MHz but
the datasheet also specifies that -3dB bandwidth at A = 1 is 350MHz,
and in page number 9 the Gain and Phase vs Frequency graph 

The frequency at gain = 0dB is about 300MHz and 400MHz respectively

So when I am designing a TIA using LTC6268/LTC6269 what should I consider the GBW of this IC as?

Edit Notes

Edited title
[edited by: Agumbe at 10:47 AM (GMT -4) on 1 Apr 2024]

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