UMS CHT4699-99F

CHT4699-99F
36-44GHz Variable Attenuator
GaAs Monolithic Microwave IC
Description
The CHT4699-99F is a monolithic 36- 44GHz
Variable Voltage Attenuator.
RF_OUT
It is designed for a wide range of
applications, from military to commercial
communication systems.
RF_IN
The circuit is manufactured with a MESFET
process, 0.7µm gate length, via holes
through the substrate, air bridges.
It is available in chip form.
V1
V2
0
-2
Main Features
-4
-6
-8
■ Broadband performances: 36-44GHz
■ Minimum attenuation: 4dB
■ 30dB dynamic range
■ 27dBm input IP3
■ DC bias: -5 to 0V
■ Chip size 2.41x1.5x0.1mm
-10
A
dBS21 (dB)
-12
-14
-16
-18
-20
-22
-24
B
-26
-28
-30
-32
-34
35.0
A: V1 from -5V to 0V & V2= -5V
B: V1= 0V & V2 from -5V to 0V
37.5
40.0
42.5
45.0
47.5
50.0
Frequency (GHz)
Main Electrical Characteristics
Tamb.= +25°C
Symbol
Parameter
Freq
Frequency range
Min Att
Minimum attenuation with V1=V2= -5V
Dyn Att
Dynamic range of attenuation
IIP3
Input IP3 all attenuation
Ref. : DSCHT46992090 - 30 Mar 12
1/12
Min
36.0
Typ
Max
44.0
-4
30
27
Unit
GHz
dB
dB
dBm
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Electrical Characteristics
Tamb.= +25°C,
Symbol
Parameter
Freq
Frequency range
Min Att.
Min
36
Typ
Max
44
Unit
GHz
|S21| (V1=-5V;V2=-5V)
-4
dB
Dyn
Attenuation dynamic
30
dB
RLin
Input Return loss (any attenuation)
-10
dB
RLout
Output Return loss (any attenuation)
-8
dB
Pin1dB
Input 1dB compression point (any
attenuation)
20
dBm
I IP3
Input 3rd order Intercept Point (any
attenuation)
27
dBm
These values are representative of on-wafer measurements that are made without bonding
wires at the RF ports.
A bonding wire of typically 0.1 to 0.15nH will improve the matching at the accesses.
Absolute Maximum Ratings (1)
Tamb.= +25°C
Symbol
Parameter
Values
Unit
V1
V1 control voltage
-6 to +0.6
V
V2
V2 control voltage
-6 to +0.6
V
Pin
RF input power overdrive (2)
+33
dBm
Ta
Operating temperature range
-40 to +85
°C
Tstg
Storage temperature range
-55 to +150
°C
(1)
Operation of this device above anyone of these parameters may cause permanent damage.
(2)
Duration < 1s.
Typical Bias Conditions
Tamb.= +25°C
Symbol
Pad No
V1
V1
V2
V2
Parameter
V1 control voltage
Values
-5 to 0
Unit
V
V2 control voltage
-5 to 0
V
For optimum linearity V1& V2 should be tuned in sequence.
Ref. : DSCHT46992090 - 30 Mar 12
2/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical on wafer Sij parameters
Tamb.= +25°C, V1= -5 V, V2=-5 V, Minimum attenuation
Freq
S11
PhS11
S12
PhS12
S21
(GHz)
(dB)
(°)
(dB)
(°)
(dB)
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0
31.5
32.0
32.5
33.0
33.5
34.0
34.5
35.0
35.5
36.0
36.5
37.0
37.5
38.0
38.5
39.0
39.5
40.0
40.5
41.0
41.5
42.0
42.5
43.0
43.5
44.0
44.5
45.0
45.5
46.0
46.5
47.0
47.5
48.0
48.5
49.0
49.5
50.0
-19.46
-21.44
-22.65
-21.57
-20.47
-18.31
-16.03
-14.38
-13.17
-11.99
-11.29
-10.46
-9.95
-9.70
-9.26
-8.57
-8.24
-8.09
-7.59
-7.42
-7.14
-7.28
-7.51
-7.56
-8.09
-8.60
-8.73
-9.43
-9.77
-10.25
-11.94
-13.58
-15.22
-17.80
-18.88
-17.78
-15.78
-13.90
-11.87
-10.25
-9.30
-8.64
-8.75
-8.46
-8.19
-8.02
-7.44
-8.08
-8.32
-8.44
-10.43
-17.4
-10.3
10.1
28.1
41.5
50.0
52.0
49.4
46.0
42.3
39.0
33.2
28.5
24.5
21.6
18.5
12.5
8.8
5.0
-0.6
-8.2
-12.8
-18.2
-24.6
-28.7
-31.7
-36.7
-40.2
-43.1
-50.9
-55.1
-55.1
-53.3
-43.2
-23.1
-6.7
5.7
7.5
9.1
5.3
-1.2
-8.3
-13.8
-18.1
-22.3
-25.5
-31.5
-39.7
-41.1
-48.7
-58.0
Ref. : DSCHT46992090 - 30 Mar 12
-3.02
-3.03
-3.09
-3.14
-3.11
-3.05
-3.12
-3.35
-3.51
-3.61
-3.78
-3.98
-4.02
-4.04
-4.00
-4.32
-4.37
-4.39
-4.32
-4.36
-3.92
-4.09
-4.02
-4.35
-4.14
-4.04
-3.72
-3.59
-3.75
-3.75
-3.73
-3.80
-3.79
-3.59
-3.70
-3.68
-3.84
-3.80
-4.10
-4.38
-4.71
-5.28
-5.73
-5.37
-4.85
-5.30
-6.30
-6.56
-6.92
-6.66
-5.71
53.8
45.6
37.9
30.8
23.6
15.3
7.1
-1.0
-8.7
-15.9
-22.1
-29.8
-36.6
-43.0
-49.9
-58.7
-63.5
-70.1
-76.6
-82.9
-90.0
-97.7
-105.9
-111.6
-118.8
-125.2
-132.8
-141.2
-150.8
-157.6
-165.3
-173.6
178.5
170.1
161.7
153.2
143.8
136.7
126.2
116.9
108.1
102.0
96.8
89.9
82.1
68.6
64.2
56.0
52.3
49.4
37.4
3/12
-3.13
-3.04
-3.13
-3.14
-3.06
-3.06
-3.18
-3.31
-3.33
-3.52
-3.56
-3.56
-3.69
-3.68
-3.83
-3.67
-4.15
-4.30
-4.08
-3.88
-3.49
-3.71
-3.42
-4.08
-4.11
-4.05
-3.64
-3.47
-3.73
-3.83
-4.07
-3.89
-3.73
-3.65
-3.73
-3.72
-3.79
-3.73
-3.96
-4.65
-5.34
-5.54
-5.46
-5.51
-5.86
-6.14
-6.66
-7.14
-7.72
-7.18
-7.01
PhS21
(°)
S22
(dB)
PhS22
(°)
53.5
45.9
38.6
31.4
23.4
15.8
7.4
-0.6
-6.9
-15.1
-21.6
-28.6
-34.9
-42.3
-50.3
-57.9
-65.6
-69.3
-76.2
-80.2
-89.4
-98.4
-108.0
-116.3
-120.9
-128.0
-133.5
-143.8
-151.5
-161.0
-167.0
-173.3
178.7
169.1
161.0
152.2
144.0
134.1
122.6
114.1
106.2
101.1
95.0
84.7
78.0
69.2
60.2
56.5
50.4
47.2
36.4
-20.13
-21.81
-22.83
-22.67
-21.34
-18.76
-15.88
-13.89
-12.59
-11.73
-10.82
-10.07
-9.46
-8.83
-8.46
-7.98
-7.66
-7.69
-7.68
-7.69
-7.50
-7.63
-7.84
-8.18
-8.86
-9.49
-9.52
-9.77
-9.88
-10.39
-11.25
-12.21
-13.36
-14.03
-14.48
-14.80
-14.21
-12.11
-10.53
-9.63
-8.86
-7.90
-7.30
-6.64
-6.12
-6.08
-6.29
-6.02
-6.20
-6.63
-7.65
-10.5
4.0
23.7
36.9
47.5
53.5
53.7
50.9
49.1
48.0
44.0
37.6
31.2
25.0
20.4
16.8
12.1
7.7
2.1
-2.8
-11.1
-15.5
-19.7
-22.1
-23.3
-24.4
-27.7
-31.1
-34.0
-38.3
-38.5
-39.6
-34.3
-28.1
-25.3
-14.9
-4.5
0.3
-0.5
-2.0
-2.7
-3.5
-9.1
-17.6
-25.3
-32.7
-35.3
-38.2
-45.0
-51.7
-56.9
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical on wafer Sij parameters
Tamb.= +25°C, V1= 0 V, V2= 0 V, Maximum attenuation
Freq
S11
PhS11
S12
PhS12
S21
(GHz)
(dB)
(°)
(dB)
(°)
(dB)
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0
31.5
32.0
32.5
33.0
33.5
34.0
34.5
35.0
35.5
36.0
36.5
37.0
37.5
38.0
38.5
39.0
39.5
40.0
40.5
41.0
41.5
42.0
42.5
43.0
43.5
44.0
44.5
45.0
45.5
46.0
46.5
47.0
47.5
48.0
48.5
49.0
49.5
50.0
-17.55
-16.91
-16.15
-15.35
-14.89
-14.38
-13.86
-13.49
-13.14
-12.81
-12.92
-12.82
-12.88
-13.10
-13.15
-12.85
-12.74
-12.76
-12.64
-12.70
-12.78
-12.64
-12.79
-12.93
-13.33
-13.44
-13.22
-13.16
-12.89
-12.53
-13.51
-13.56
-13.02
-12.68
-12.38
-11.85
-11.83
-12.80
-12.37
-11.43
-11.08
-10.84
-11.59
-11.81
-11.48
-10.75
-9.95
-10.79
-10.52
-9.83
-10.36
17.7
18.8
19.1
18.9
16.8
14.8
13.8
11.4
8.6
6.2
2.8
-0.1
-2.0
-3.6
-3.2
-2.7
-5.1
-6.4
-6.8
-10.0
-11.4
-11.5
-13.8
-16.2
-14.5
-12.5
-13.0
-11.6
-11.9
-17.0
-16.7
-11.2
-9.7
-8.8
-8.1
-12.6
-16.8
-17.8
-10.2
-9.5
-12.8
-17.1
-19.8
-15.5
-14.3
-12.7
-17.7
-21.1
-16.2
-16.5
-23.6
Ref. : DSCHT46992090 - 30 Mar 12
-28.64
-28.62
-28.90
-29.24
-29.43
-29.38
-29.69
-30.15
-30.22
-30.35
-30.98
-31.26
-31.03
-30.72
-31.06
-31.52
-31.93
-32.27
-31.83
-31.91
-31.87
-31.90
-32.40
-32.44
-32.64
-33.05
-32.97
-32.83
-33.05
-33.00
-33.45
-33.72
-33.80
-33.50
-34.22
-34.43
-34.17
-33.22
-33.58
-33.53
-33.53
-33.97
-34.65
-34.77
-33.32
-32.97
-34.11
-33.76
-34.41
-33.76
-32.84
56.7
49.3
42.3
36.9
32.3
25.2
18.8
13.2
8.5
1.2
-1.8
-6.6
-9.2
-16.1
-24.6
-31.0
-34.9
-39.0
-42.9
-49.5
-56.0
-63.3
-69.8
-76.1
-80.2
-87.2
-90.5
-96.4
-104.5
-111.2
-115.2
-121.8
-127.7
-133.4
-140.3
-144.0
-144.9
-149.1
-161.4
-163.7
-175.4
-178.0
177.1
-176.9
177.6
165.9
160.8
156.1
151.4
159.8
151.0
4/12
-28.6
-28.6
-29.0
-29.3
-29.3
-29.2
-29.8
-30.2
-30.2
-30.4
-30.8
-31.0
-30.5
-30.5
-30.9
-31.2
-31.8
-32.0
-31.7
-31.4
-31.7
-31.6
-32.2
-32.2
-32.5
-32.9
-33.0
-32.7
-33.1
-32.9
-33.4
-33.7
-33.6
-33.9
-34.3
-34.6
-33.8
-32.9
-33.7
-33.9
-34.3
-34.1
-34.5
-34.3
-33.9
-33.8
-34.4
-35.0
-34.2
-34.7
-33.6
PhS21
(°)
S22
(dB)
PhS22
(°)
55.4
48.0
42.9
37.3
32.4
26.1
18.6
13.5
9.3
3.3
-2.0
-5.9
-8.6
-16.0
-25.1
-31.3
-35.0
-38.8
-42.8
-48.0
-57.1
-63.2
-71.6
-77.4
-82.6
-87.7
-92.6
-98.4
-105.4
-111.0
-119.4
-123.1
-129.5
-137.1
-139.6
-143.0
-143.1
-154.7
-166.5
-168.3
-173.8
-177.5
177.2
175.6
171.7
163.0
157.4
157.6
151.0
155.2
148.2
-17.34
-16.66
-16.32
-16.28
-15.72
-14.80
-14.05
-13.44
-13.23
-13.41
-13.37
-13.14
-12.83
-12.33
-12.19
-12.18
-12.29
-12.57
-13.01
-13.21
-13.09
-12.83
-12.67
-12.58
-12.92
-13.41
-13.49
-13.27
-12.81
-12.48
-12.23
-11.79
-11.35
-11.23
-11.29
-11.03
-10.75
-10.28
-9.72
-9.42
-9.12
-8.99
-9.11
-8.99
-8.76
-8.44
-8.48
-8.29
-8.36
-8.67
-8.95
19.2
22.3
21.3
18.8
16.4
13.8
12.9
12.9
12.7
11.0
10.0
6.7
3.4
0.2
-1.9
-2.8
-3.5
-4.4
-7.0
-8.9
-11.6
-12.1
-11.1
-9.6
-7.9
-6.7
-6.9
-6.0
-6.9
-7.5
-4.7
-4.3
-5.1
-5.4
-7.6
-7.6
-9.0
-10.7
-11.1
-12.1
-12.8
-14.3
-17.2
-20.0
-23.5
-28.1
-27.5
-27.2
-30.6
-31.9
-32.4
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical on wafer Measurements
Tamb.= +25°C
Gain versus Control Voltage
0
-2
-4
-6
-8
-10
A
dBS21 (dB)
-12
-14
-16
-18
-20
-22
-24
B
-26
-28
-30
A: V1 from -5V to 0V & V2= -5V
B: V1= 0V & V2 from -5V to 0V
-32
-34
35.0
37.5
40.0
42.5
45.0
47.5
50.0
Frequency (GHz)
Gain versus Control Voltage
0
37.5GHz
39.5GHz
41.5GHz
43.5GHz
-5
V1 variable with V2= -5V
dBS21 (dB)
-10
-15
-20
-25
-30
V2 variable with V1= 0V
-35
-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
Control Voltage (V1 or V2)
Ref. : DSCHT46992090 - 30 Mar 12
5/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical on wafer Measurements
Tamb.= +25°C
S22 versus control voltage
0
-5
-5
dBS22 (dB)
dBS11 (dB)
S11 versus control voltage
0
-10
-15
-10
-15
-20
35.0
37.5
40.0
42.5
45.0
47.5
-20
35.0
50.0
37.5
40.0
Frequency (GHz)
42.5
45.0
47.5
50.0
Frequency (GHz)
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
V1= -5V
V1= -3.6V
V1= -2.8V
V1= -2.4V
V1= -3.2V
Gain (dB)
Gain (dB)
Gain versus input power & V1 control voltage with V2= -5V
38GHz
44GHz
0
5
10
Input power (dBm)
Ref. : DSCHT46992090 - 30 Mar 12
15
20
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
V1= -5V
V1= -3.6V
V1= -2.8V
V1= -2.4V
0
6/12
5
10
Input power (dBm)
V1= -3.2V
15
20
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical Test Fixture Measurements
Tamb.= +25°C
Input IP3 versus input power & V1 control voltage at 38GHz with V2= -5V
40
38
36
Input IP3 (dBm)
34
32
30
28
26
24
V1= -5V
V1= -3.3V
V1= -3.1V
V1= -2.9V
V1= -2.7V
22
20
0
1
2
3
4
5
6
Input Power DCL (dBm)
Input IP3 versus input power & V1 control voltage at 42GHz with V2= -5V
40
38
36
Input IP3 (dBm)
34
32
30
28
26
24
V1= -5V
V1= -3.3V
V1= -3.1V
V1= -2.9V
V1= -2.7V
22
20
2
3
4
5
6
Input Power DCL (dBm)
Ref. : DSCHT46992090 - 30 Mar 12
7/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Typical Test Fixture Measurements
Tamb.= +25°C
40
40
38
38
36
36
34
34
Input IP3 (dBm)
Input IP3 (dBm)
Input IP3 versus input power with V1= V2
38GHz
42GHz
32
30
28
26
24
-3.3V
22
-3.1V
-2.9V
32
30
28
26
24
-2.7V
-3.3V
22
20
-3.1V
-2.9V
-2.7V
20
0
1
2
3
4
Input Power DCL (dBm)
Ref. : DSCHT46992090 - 30 Mar 12
5
6
2
8/12
3
4
Input Power DCL (dBm)
5
6
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Mechanical data
Chip thickness: 100µm.
Chip size: 2410x1500 ±35µm
All dimensions are in micrometers
Ref. : DSCHT46992090 - 30 Mar 12
9/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Recommended assembly plan
RF_OUT
RF_IN
V1
V2
120pF
120pF
To V1 DC power supply
To V2 DC power supply
Note: Supply feed should be bypassed. 25µm diameter gold wire is to be preferred.
Recommended circuit bonding table
Label
V1, V2
Type
Vg
Ref. : DSCHT46992090 - 30 Mar 12
Decoupling
120pF
Comment
Gain control Supply
10/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Biasing sequence
To obtain good performances in linearity, biasing voltage should be applied as following:
- Control of 1st stage attenuation with V1 from –5V to 0V, with V2 fixed at -5V
- Control of 2nd stage with V2 from -5V to 0V, with V1 fixed at 0V
Voltage
0V
V1
V2
-5V
Min.
Max.
Attenuation
This part could be also driven in Single Voltage Control, applying the same voltage from -5V
to 0V on V1 and V2.
Ref. : DSCHT46992090 - 30 Mar 12
11/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
CHT4699-99F
36-44GHz Variable Attenuator
Recommended ESD management
Refer to the application note AN0020 available at http://www.ums-gaas.com for ESD
sensitivity and handling recommendations for the UMS products.
Recommended environmental management
UMS products are compliant with the regulation in particular with the directives RoHS
N°2011/65 and REACh N°1907/2006. More environmental data are available in the
application note AN0019 also available at http://www.ums-gaas.com.
Ordering Information
Chip form:
CHT4699-99F/00
Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors
S.A.S. assumes no responsibility for the consequences of use of such information nor for any infringement of
patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of United Monolithic Semiconductors S.A.S.. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied. United Monolithic Semiconductors S.A.S. products are not authorised for use
as critical components in life support devices or systems without express written approval from United
Monolithic Semiconductors S.A.S.
Ref. : DSCHT46992090 - 30 Mar 12
12/12
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34