CHA3512 [UMS]
6-18GHz Low Noise Digital Variable Amplifier; 6-18GHz低噪声数字可变增益放大器
| 型号： | CHA3512 |
| 厂家： | 
UNITED MONOLITHIC SEMICONDUCTORS |
| 描述： | 6-18GHz Low Noise Digital Variable Amplifier |
| 文件： | 总10页 (文件大小：518K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CHA3512
RoHS COMPLIANT
6-18GHz Low Noise Digital Variable Amplifier
GaAs Monolithic Microwave IC
Description
The CHA3512 is composed by a Single Pole
Double Through (SPDT) switch followed by a
one step digital attenuator and a double
stage travelling wave amplifier. It is designed
for defense applications. The backside of the
chip is both RF and DC grounded. This helps
to simplify the assembly process.
The circuit is manufactured with a PM-HEMT
process, 0.25µm gate length, via holes
through the substrate, air bridges and
electron beam gate lithography.
Typical on wafer Measurements
Gain versus attenuation states
It is available in chip form.
Main Features
■ Performances : 6-18GHz
■ 23 dBm saturated output power
■ 16 dB gain
■ 1 bit attenuator for 20dB dynamic range
■ DC power consumption : 210mA @ 4.5V
■ Chip size : 4.27 x 2.46 x 0.1 mm
Main Characteristics
Tamb. = 25°C
Symbol
Fop
Parameter
Operating frequency range
Min
Typ
Max
Unit
GHz
dB
6
18
G
Small signal gain @ Attenuator state 0dB
Saturated Output power @ Attenuator state 0dB
Attenuator range
16
23
20
Psat
dBm
dB
ATT dyn
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. DSCHA35126278 - 05 Oct 06
1/10
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
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
6-18GHz Digital Variable Amplifier
CHA3512
Electrical Characteristics on wafer
Tamb = +25°C
Vd= Pads B, C = 4.5V, Vg = Pads A, C tuned for Id = 210mA
Symbol
Parameter
Min
Typ
Max
Unit
Fop
Operating frequency range (1)
6
18
GHz
G
Small signal gain @ Attenuator state 0dB (1)
16
20
dB
dB
dB
ATT dyn Attenuator range
Is
Small signal gain @ Attenuator state 0dB &
-35
switch OFF (1)
P1dB
Psat
NF
Output power at 1dB compression @ Attenuator
state 0dB (1)
20
23
dBm
dBm
dB
Saturated Output power @ Attenuator state 0dB
(1)
Noise figure @ Attenuator state 0dB
7
VSWRin Input VSWR all attenuator states
2.0:1
2.0:1
4.5
VSWRout Output VSWR all attenuator states & switch ON
Vd
Id
V
mA
V
Drain bias DC voltage (Pads B,D)
Bias current @ small signal
210
250
0
Vc
Control voltage for Attenuator bit & SPDT switch
-5
(1) These values are representative for on-wafer measurements that are made without bonding
wires at the RF ports.
Ref. : DSCHA35126278 - 05 Oct 06
2/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Absolute Maximum Ratings
Tamb. = 25°C (1)
Symbol
Vd
Parameter
Maximum Drain bias voltage ( Pads B, D)
Drain bias current with Vd=4.5V
Gate bias voltage (Pads A,C)
Values
+5
Unit
V
Id
300
mA
Vg
-2 to +0.4
-7 to +0.6
+20.0
V
V
Vc
Attenuator bit & SPDT control voltage
Maximum input power overdrive (2)
Maximum channel temperature
Operating temperature range
Pin
dBm
°C
Tch
Ta
+175
-40 to +70
-55 to +125
°C
Tstg
Storage temperature range
°C
(1) Operation of this device above anyone of these parameters may cause permanent damage.
(2) Duration < 1s.
Thermal Resistance channel to ground paddle =123°C/W for Tamb. = +70°C.
LNA Control interface
The attenuator state is controlled by 2 voltages.
The SPDT switch is controlled by 2 voltages.
Voltage CONTROL
PAD
Switch control
Theoretical
attenuation
state
20A
(V)
20B
(V)
E
(V)
F
(V)
(dB)
0
1
2
0 référence
20
-5
0
0
-5
0
-5
-5
0
0
0
Isolation
-5
-5
Ref. : DSCHA35126278 - 05 Oct 06
3/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Typical on wafer Measurements @ 25°C
Bias conditions: Vd=4.5V, Vg tuned for Id = 210mA
Linear Gain versus attenuator states
0dB state
20dB state
Linear Gain with SPDT switch OFF
Ref. : DSCHA35126278 - 05 Oct 06
4/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Saturated output power @ nominal state
dB(S11) versus frequency for all states
Attenuator accuracy versus frequency
Switch OFF
dB(S22) versus frequency for all states
Ref. : DSCHA35126278 - 05 Oct 06
5/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Typical test fixture Measurements @ 25°C
Bias conditions: Vd=4.5V, Vg tuned for Id = 210mA
Linear Gain versus attenuation states
Switch OFF
Input Return Loss versus attenuation states
Switch OFF
Ref. : DSCHA35126278 - 05 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
6-18GHz Digital Variable Amplifier
CHA3512
Output Return Loss versus attenuation states
Ref. : DSCHA35126278 - 05 Oct 06
7/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Typical Chip on wafer Sij parameters for reference state
Tamb = +25°C, Vd1 = +4.5 V, Id = 210 mA , 0dB state (20A = -5V, 20B = 0V).
Freq (GHz) dB(S11) P(S11) (°) dB(S21) P(S21) (°) dB(S12) P(S12) (°) dB(S22) P(S22) (°)
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
-5.5
-8.0
-92.5
-124.4
-149.5
-167.5
170.0
167.5
-112.8
-106.6
-121.1
-137.3
-152.0
-161.4
-156.8
-123.6
-107.8
-107.5
-118.9
-131.3
-147.0
-161.0
-174.3
172.0
157.6
142.7
125.9
112.4
104.1
107.6
120.0
113.6
92.0
63.4
31.3
2.8
-20.5
-39.8
-57.4
-75.6
-93.4
-110.5
-127.9
-144.2
-159.1
-175.4
167.6
150.2
130.5
-20.7
-2.7
0.3
161.9
69.1
94.1
50.3
-2.9
-54.8
-91.9
-127.4
-161.5
165.7
133.9
103.0
72.7
-62.1
-66.5
-68.7
-64.9
-83.1
-87.8
-73.1
-67.2
-63.8
-61.5
-60.0
-57.6
-56.5
-55.2
-54.0
-53.6
-53.7
-52.6
-51.6
-53.2
-53.3
-53.7
-55.4
-59.3
-59.3
-62.4
-59.0
-54.6
-51.5
-48.0
-45.8
-43.8
-43.3
-42.6
-42.4
-43.0
-45.7
-50.7
-60.5
-57.9
-50.5
-47.7
-44.3
-45.6
-47.3
-49.2
-52.6
112.2
-40.1
91.4
14.8
140.3
39.6
116.8
82.5
57.4
22.6
-7.1
-33.7
-63.6
-89.9
-115.4
-142.5
-160.6
-177.3
153.2
131.7
114.2
99.0
-0.5
-1.2
-1.5
-1.9
-2.8
-4.7
-6.1
-8.0
-57.6
-85.9
-11.1
-13.9
-17.9
-25.6
-28.0
-20.8
-17.8
-16.9
-17.4
-19.4
-22.7
-23.3
-19.3
-15.6
-13.3
-11.7
-10.5
-10.2
-10.0
-10.1
-10.4
-11.1
-12.4
-14.7
-17.6
-20.9
-20.5
-18.4
-16.8
-15.7
-14.9
-14.5
-13.8
-12.8
-11.5
-10.3
-9.3
-107.3
-132.8
-157.7
-175.7
167.0
152.1
140.7
132.5
127.7
127.0
129.8
136.0
140.3
137.2
132.1
127.6
126.2
125.0
130.5
142.9
148.2
140.1
109.0
37.3
-36.7
-71.4
-93.5
-99.5
-79.2
-60.8
-66.5
-84.5
-106.7
-131.5
-154.4
-174.8
167.0
151.2
138.3
150.9
-171.3
157.4
134.3
117.4
103.7
10.0
13.8
15.6
16.3
17.1
17.6
18.0
18.2
18.3
18.3
18.2
18.0
17.8
17.5
17.3
17.1
16.9
16.9
16.9
17.0
17.0
17.0
16.8
16.7
16.6
16.6
16.4
16.1
15.5
14.7
14.0
12.9
11.3
8.9
-10.0
-12.2
-14.5
-16.7
-18.7
-19.7
-20.2
-21.1
-21.5
-22.9
-24.4
-26.5
-28.6
-29.8
-29.7
-30.1
-32.0
-34.9
-29.6
-25.4
-24.5
-25.2
-25.9
-21.5
-15.9
-12.2
-9.6
43.1
14.2
-13.9
-41.2
-68.0
-94.5
-120.6
-146.6
-173.0
159.8
131.8
102.9
74.2
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
22.5
23.0
23.5
24.0
76.4
61.7
48.4
-22.1
-113.2
-169.8
171.1
149.4
126.8
100.8
75.6
52.2
25.5
-5.1
-39.8
-77.9
-154.2
108.5
78.2
45.8
16.4
-14.5
-46.8
-80.4
-114.6
-148.5
175.9
138.1
98.1
59.2
23.7
-8.9
-40.4
-74.3
-118.3
176.5
108.2
57.0
-8.4
-8.3
-8.9
6.0
3.2
0.8
-0.9
-1.8
-3.7
-8.9
-13.6
-16.4
-18.1
-10.2
-12.1
-15.0
-21.2
-15.1
-12.2
-12.7
-13.9
-15.2
-8.7
-8.4
-8.4
-8.6
-8.9
-9.5
-10.4
-11.6
52.1
19.4
-14.4
-35.8
-46.6
-62.7
15.7
-17.7
Ref. : DSCHA35126278 - 05 Oct 06
8/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Chip Assembly and Mechanical Data
To Vd DC Drain Supply
Note : RF wire bondings should be as short as possible, lower than 0.35mm.
25µm diameter gold wire is to be prefered.
Recommended circuit bonding table
Label
20A, 20B
Type
Vc
Decoupling
Not required
120pF / 10nF
120pF / 10nF
Not required
Not required
Not required
Comment
20dB attenuator control
B
D
A
C
E, F
Vd
Vd
Vg
Vg
Drain Supply
Drain Supply
Gate Supply
Gate Supply
Switch control
Vc
Ref. : DSCHA35126278 - 05 Oct 06
9/10
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
6-18GHz Digital Variable Amplifier
CHA3512
Bonding pad positions
Chip thickness : 100µm
Ordering Information
Chip form
:
CHA3512-99F/00
Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors
S.A.S. assumes no responsability 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. : DSCHA35126278 - 05 Oct 06
10/10
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
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