6-18GHz Digital Variable Amplifier
CHA3511
Typical test fixture Measurements
Bias conditions: Vd ( Pads B & D)=4.5V, Vg( Pads A & C) tuned for Id = 190mA
Configuration Gain: Pad=E2=-5V/Pad F=0V
S Parameters: test fixture measurements
Measurements versus temperature
30
60
55
50
45
40
35
30
25
20
20
10
Gain(switch on) : Config. Gain
0
-10
-20
-30
-40
-50
-60
Gain(switch off) : Config. Isolation
Isolation(Config.Gain-Config.Isolation)
ISO(25 deg)
ISO(-40deg C)
ISO(+70 deg C)
dBS21(25 degC)
dBS21(-40 deg C)
dBS21(+70 deg C)
2
4
6
8
10
12
14
16
18
20
2
4
6
8
10
12
14
16
18
20
Frequency GHz
Frequency GHz
0
0
-2
-4
Output return Loss (dB)
-2
-4
dBS11(25deg C)
dBS11(-40 deg C)
dBS11(+ 70 deg C)
Input return Loss (dB)
-6
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
-8
-10
-12
-14
-16
-18
-20
dBS22(25 deg C)
dBS22(-40 deg C)
dBS22(+70 deg C)
2
4
6
8
10
12
14
16
18
20
2
4
6
8
10
12
14
16
18
20
Frequency (GHz)
Frequency (GHz)
Noise Figure: test fixture measurements
Tamb=+25°C
15
14
13
12
11
10
9
8
NF
7
6
5
4
4
6
8
10
12
14
16
18
20
Frequency (GHz)
Ref. : DSCHA35116286 - 13 Oct 06
6/10
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
UMS [ UNITED MONOLITHIC SEMICONDUCTORS ]
