CHT4690 United Monolithic Semiconductors, CHT4690 Datasheet - Page 11

• Manufacturer Part Number: CHT4690
• Description: 5-30ghz Attenuator
• Manufacturer: United Monolithic Semiconductors

5-30GHz Attenuator
Biasing sequence
To obtain good performances in linearity, biasing voltage should be applied as
following:
Chip Assembly and Mechanical Data
Ref: DSCHT46908268 - 24 Sep 08
-
-
RF IN
Note: Supply feed might be capacitively bypassed. 25 m diameter gold wire is to be prefered.
Control of 1
Control of 2
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: [phone] - Fax : [phone]
to V1 DC gate supply feed
to V1 DC gate supply feed
st
nd
stage attenuation with V1 from –5V to 0V, with V2 fixed at -5V
stage with V2 from –5V to 0V, with V1 fixed at 0V
V1
V1
V1
V1
V1
V1
V1
V1
…
…
…
…
120 pF
120 pF
11/12
..
..
..
..
..
..
..
..
120 pF
120 pF
V2
V2
V2
V2
..
..
..
..
V2
V2
V2
V2
..
..
..
..
to V2 DC gate supply feed
to V2 DC gate supply feed
…
…
Specifications subject to change without notice
…
…
CHT4690
RF OUT