CHT4690-99F_15 Datasheet, PDF (11/12 Pages) United Monolithic Semiconductors – 5-30GHz ATTENUATOR

5-30GHz Attenuator
CHT4690-99F
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
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..
..
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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. : DSCHT46900211 - 30 Jul 10
11/12
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Specifications subject to change without notice