it is possible to use AD8367 down to DC without harming Gain flatness, OIP3 and NF performance?
The AD8367 is actually more suitable for lower frequency operation (than the AD8368)
since it does not have the equivalent of a DECL pin like the AD8368. You still need large
ac-coupling caps on the input and output, large capacitor on DETO if AGC is
being used and a large capacitor on HPFL to keep the output centering loop
The down-side of the AD8367 is it has lower SFDR than the AD8368 when you
consider the NF and IP3 together. Feel free to assume that the NF and IP3 at lower
frequencies is similar to that at the higher frequencies reported on the data sheet.
Another suggestion might be the ADRF6510 filter/VGA which has
a dual, matched pair of baseband VGAs with 50dB gain control. The filtering
comes for "free" although the current consumption is high. The ADRF6510 can
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