CHT4690 Datasheet, PDF (12/13 Pages) United Monolithic Semiconductors – 5-30GHz ATTENUATOR

5-30GHz Attenuator
CHT4690
Biasing sequence
To obtain good performances in linearity, biasing voltage should be applied as
following:
- Control of 1^st stage attenuation with V1 from –5V to 0V, with V2 fixed at -5V
- Control of 2^nd stage with V2 from –5V to 0V, with V1 fixed at 0V
RF IN
…
…
…
…
RF OUT
V1
V2
Chip Assembly and Mechanical Data
..
..
..
..
120 pF
120 pF
to V1 DC gate supply feed
to V2 DC gate supply feed
Note : Supply feed might be capacitively bypassed. 25µm diameter gold wire is to be prefered.
Ref. : DSCHT46905334 - 29 Nov 05
12/13
Specifications subject to change without notice
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