From the a ADL5336 datasheet is unclear is this VGA can be used with single ended inputs. I would really appreciate someone's explanation about this.
Yes you can, but you need to AC ground the unused input.
What frequency are you using the part at? If you are operating at a low frequency, you will need to increase the AC coupling cap size to achieve a good ground.
thank you for such a fast response! The lower frequency we intent to use this part at will be around 100 kHz, the upper limit maybe few 100MHz. What value of the cap. you recommend to use with such frequencies?
Thank you in advance,
1.0uF for both the AC grounding cap on the input and the VCM caps should be big enough to operate down to 100kHz with no problems. If not, increase to 2.2uF and re-test.
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