CHP2085
Ref. : DSCHP20850046 - 15-feb.-00
1/6
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Dpartementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
S-band Phase Shifter / Switch
GaAs Monolithic Microwave IC
Description
The CHP2085 is a S-band monolithic
5 bits phase shifter / switch.
The circuit is manufactured with a
standard MESFET process : via holes
through the substrate, air bridges and
electron beam gate lithography.
It is supplied in chip form.
Main Features
Frequency range : 2.7 to 3.4GHz
11.25 phase quantization
27dB switch isolation
Chip size : 4,14 x 2,16 x 0,1mm
12
11
10
13
14
1
9
8
7
6
5
4
3
2
Switch
22,5 bit
180 bit
90 bit
45
bit
11,25 bit
Pin Out
1- RFout2
8- B4
2- P2
9- H4
3- P1
10- BH1
4- H8
11- GND
5- B8
12- B9
6- B2
13- RFin
7- H9
14- RFout1
Main Characteristics
Tamb = +25C
Symbol
Parameter
Min
Max
Unit
Fop
Operating frequency range
2.7
3.4
GHz
PHIpp
Phase shift precision peak to peak error
10
Il
Insertion loss
12
dB
Is
Isolation
27
dB
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
CHP2085
S-band Phase Shifter / Switch
Ref. : DSCHP20850046 - 15-feb.-
00DSCHP20850046 - 15-feb.-00
2/6
Specifications subject to change without notice
Route Dpartementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
Electrical Characteristics
Tamb = +25C
Symbol
Parameter
Test
Conditions
Min
Max
Unit
Fop
Operating frequency range
2.7
3.4
GHz
PHIpp
Phase shift precision peak to peak error
(1)
10
Il
Insertion loss
(1)
12
dB
Is
Isolation
(1)
27
dB
VSWRin
Input VSWR
(1)
2:1
VSWRout Ouput VSWR
(1)
2:1
Pin1dB
Pulsed Input power at 1dB increase loss
(2)
23
dBm
Ips
Phase shifter current
(1)
5
mA
(1) Pin
0dBm, Low level control voltage = -4V, High level control voltage = 0V,
Vgi consistent with the Phase Schifter Control Interface table.
(2) These values are representative for pulsed on-wafer measurements
Absolute Maximum Ratings
(1)
Tamb = +25C
Symbol
Parameter
Values
Unit
Vgi
Phase shifter control voltage
-8.0
V
Vpi
Switch control voltage
-8.0
V
Pin
Maximum peak input power overdrive (2)
+25
dBm
Top
Operating temperature range
-40 to +85
C
Tstg
Storage temperature range
-55 to +125
C
(1) Operation of this device above anyone of these paramaters may cause permanent damage.
(2) Duration < 1s.
(1) Pin
0dBm
Switch Control Signal Interface
Switch command
Bond pads
P1
P2
Rfin to RFout2
Low level High level
Rfin to RFout1
High level Low level
S-band Phase Shifter / Switch
CHP2085
Ref. : DSCHP20850046 - 15-feb.-00
3/6
Specifications subject to change without notice
Route Dpartementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
Typical Wafer [S] Parameters
RFin to RFout2 path
IN SERT IO N LO SS
-1 0 ,0 0
-8 ,0 0
-6 ,0 0
2 , 5
2 , 7
2 , 9
3 ,1
3 ,3
3 , 5
FREQ (GH z)
(d
B
)
rf
1 1 . 2 5
2 2 . 5
4 5
9 0
1 8 0
RET U RN LO SS (IN )
-3 0 ,0 0
-2 0 ,0 0
-1 0 ,0 0
2 , 5
2 , 7
2 , 9
3 ,1
3 ,3
3 , 5
FREQ (GH z)
(d
B
)
rf
1 1 . 2 5
2 2 . 5
4 5
9 0
1 8 0
RET U RN LO SS (O U T )
-3 0 , 0 0
-2 0 , 0 0
-1 0 , 0 0
2 , 5
2 ,7
2 , 9
3 ,1
3 , 3
3 , 5
FREQ (GH z)
(d
B
)
rf
1 1 . 2 5
2 2 . 5
4 5
9 0
1 8 0
CHP2085
S-band Phase Shifter / Switch
Ref. : DSCHP20850046 - 15-feb.-
00DSCHP20850046 - 15-feb.-00
4/6
Specifications subject to change without notice
Route Dpartementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
Typical Wafer [S] Parameters
RFin to RFout1 path
ISO LA T IO N
-4 0 , 0 0
-3 5 , 0 0
-3 0 , 0 0
2 , 5
2 ,7
2 , 9
3 ,1
3 , 3
3 , 5
FREQ (GH z)
(d
B
)
rf
1 1 . 2 5
2 2 . 5
4 5
9 0
1 8 0
IN SERT IO N LO SS
-1 0 ,0 0
-8 ,0 0
-6 ,0 0
2 , 5
2 , 7
2 ,9
3 , 1
3 , 3
3 , 5
FREQ (GH z)
(d
B
)
rf
9 0
RET U RN LO SS (IN )
-3 0 , 0 0
-2 0 , 0 0
-1 0 , 0 0
2 , 5
2 , 7
2 , 9
3 ,1
3 ,3
3 , 5
FREQ (GH z)
(d
B
)
rf
9 0
RET U RN LO SS (OU T )
-3 0 ,0 0
-2 0 ,0 0
-1 0 ,0 0
2 , 5
2 , 7
2 ,9
3 , 1
3 , 3
3 , 5
FREQ (GH z)
(d
B
)
rf
9 0
S-band Phase Shifter / Switch
CHP2085
Ref. : DSCHP20850046 - 15-feb.-00
5/6
Specifications subject to change without notice
Route Dpartementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
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
Bond pads (1)
H8
B8
H9
B9
H4
B4
B2
BH1
0
(0)
1
0
1
0
1
0
0
0
11.25 (
/16)
1
0
1
0
1
0
0
1
22.50 (
/8)
1
0
1
0
1
0
1
0
33.75 (
/8 +
/16)
1
0
1
0
1
0
1
1
45
(
/4)
1
0
1
0
0
1
0
0
56.25 (
/4 +
/16)
1
0
1
0
0
1
0
1
67.50 (
/4 +
/8)
1
0
1
0
0
1
1
0
78.75 (
/4 +
/8 +
/16)
1
0
1
0
0
1
1
1
90
(
/2)
1
0
0
1
1
0
0
0
180
(
)
0
1
1
0
1
0
0
0
348.75 (
+
/2 +
/4 +
/8 +
/16)
0
1
0
1
0
1
1
1
(1)
Terminology :
B = Low pass, H = High pass, BH = Low/High pass
1 = 115, 2 = 22.5, 4 = 45, 9 = 90, 8 = 180
Simplified Schematic
RFin
RFout1
RFout2
90 bit
45 bit
11,25 bit
22,5 bit
180 bit
Switch
B9
BH1
H4
B4
H9
B2
B8
H8
P1
P2
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