CHP2085 Datasheet, PDF (5/6 Pages) United Monolithic Semiconductors – S-band Phase Shifter / Switch

S-band Phase Shifter / Switch
CHP2085
Phase Shifter Control Interface
The 5 bits phase shifter command is actuated by the 8 voltage control pads
State = 1 for Vgi = 0V (high level), State = 0 for Vgi = -5.5V (low level)
Nominal phase state
°
0 (0)
Bond pads (1)
H8 B8 H9 B9 H4 B4 B2
1
0
1
0
1
0
0
11.25 (π/16)
1
0
1
0
1
0
0
22.50 (π/8)
1
0
1
0
1
0
1
33.75 (π/8 + π/16)
1
0
1
0
1
0
1
45 (π/4)
1
0
1
0
0
1
0
56.25 (π/4 + π/16)
1
0
1
0
0
1
0
67.50 (π/4 + π/8)
1
0
1
0
0
1
1
78.75 (π/4 + π/8 + π/16) 1
0
1
0
0
1
1
90 (π/2)
1
0
0
1
1
0
0
180 (π)
348.75 ^{(π + π/2 + π/4 +}
π/8 + π/16)
(1) Terminology :
0
1
1
0
1
0
0
0
1
0
1
0
1
1
B = Low pass, H = High pass, BH = Low/High pass
1 = 11°5, 2 = 22.5°, 4 = 45°, 9 = 90°, 8 = 180°
Simplified Schematic
BH1
0
1
0
1
0
1
0
1
0
0
1
B9
RFin
BH1
90° bit
45° bit
11,25° bit
H4
B4
H9
B2
RFout1
B8
Switch
22,5° bit
180° bit
H8
P1
P2
RFout2
Ref. : DSCHP20850046 - 15-feb.-00
5/6
Specifications subject to change without notice
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