CHA2292
17-24GHz Low Noise, Variable Gain Amplifier
GaAs Monolithic Microwave IC
Description
The CHA2292 is a high gain
four-stage
monolithic low noise amplifier with variable gain.
It is designed for a wide range of applications,
from military to commercial communication
systems.The backside of the chip is both RF and
DC grounded. This helps 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.
It is available in chip form.
V5
Vd2,3,4
Vg1
Vg2,3,4
Vc
Typical on wafer measurements :Gain & NF
Main Features
•
•
•
•
•
•
Frequency range : 17-24GHz
2.8dB Noise Figure.
25dB gain
Gain control range: 15dB
DC power consumption: 160mA @ 5V
Chip size : 2.32 X 1.23 X 0.10 mm
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Gain (dB)
NF (dB)
16
17
18
19
20
21
22
23
24
Main Characteristics
Tamb. = 25°C
Parameter
Min
Frequency (GHz)
Typ
Max
Unit
Fop
G
NF
Gctrl
Id
Operating frequency range
Small signal gain
Noise figure
Gain control range with Vc variation
Bias current
17
25
2.8
15
160
24
GHz
dB
dB
dB
mA
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHA22922108 - 18-Apr.-02
1/6
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
17-24GHz LNA VGA
Electrical Characteristics for Broadband Operation
Tamb = +25°C, V5=Vd2,3,4= 5V
Symbol
Fop
G
∆G
Is
NF
Gctrl
P1dB
VSWRin
VSWRout
Vd
CHA2292
Parameter
Operating frequency range
Small signal gain (1)
Small signal gain flatness (1)
Reverse isolation (1)
Noise figure with Vc=1.2V
Gain control range versus Vc
Output power at 1dB compression with Vc=1.2V
Input VSWR (1)
Output VSWR (1)
DC voltage
V5= Vd2,3,4
Vc
Min
17
Typ
Max
24
Unit
GHz
dB
dB
dB
dB
dB
dBm
25
±1
50
2.8
15
11
3.0:1
2.5:1
5
[-0.7, +1.2]
35
160
-1.5
+1.3
V
V
mA
mA
Id1
Id
Bias current (2) with Vc=1.2V
Bias current total (3) with Vc=1.2V
(1) These values are representative of on-wafer measurements that are made without bonding
wires at RF ports.
(2) For optimum noise figure, the bias current Id1 should be adjusted to 35mA with Vg1 voltage.
(3) With Id1=35mA, adjust Vg2,3,4 voltage for a total drain current around 160mA.
Absolute Maximum Ratings
Tamb. = 25°C (1)
Symbol
Vd
Vc
Id
Vg
Pin
Ta
Tstg
Drain bias voltage
Control bias voltage
Drain bias current
Gate bias voltage
Maximum peak input power overdrive (2)
Operating temperature range
Storage temperature range
Parameter
Values
5.5
1.5
250
-2.0 to +0.4
+15
-40 to +85
-55 to +155
Unit
V
V
mA
V
dBm
°C
°C
(1) Operation of this device above anyone of these parameters may cause permanent damage.
(2) Duration < 1s.
Ref. : DSCHA22922108 - 18-Apr.-02
2/6
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
17-24GHz LNA VGA
Typical on wafer Measurements
Bias Conditions :
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
CHA2292
V5=Vd2,3,4= 5V, Vg1 for Id1= 35mA, Vg = -0.3V, Vc=1.2V
Gain (dB)
NF (dB)
16
17
18
19
20
21
22
23
24
Frequency (GHz)
Gain & Noise Figure versus frequency
In jig Measurements
Bias Conditions :
V5=Vd2,3,4= 5V, Vg1= Vg = -0.3V, Vc= 1.2V
All these measurements include the jig losses (about 0.5dB on gain, 0.2dB on noise figure
and 0.3dB on output power).
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
Gain (dB)
Pout (dBm)
18GHz
20GHz
-30
-25
-20
Input power (dBm)
-15
-10
Gain & Output power @ 18-20 GHz
Ref. : DSCHA22922108 - 18-Apr.-02
3/6
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
17-24GHz LNA VGA
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
CHA2292
Gain (dB)
Pout (dBm)
22GHz
24GHz
-30
-25
-20
Input power (dBm)
-15
-10
Gain & Output power @ 22–24 GHz
10
9
8
7
G
a
i
n
30
26
22
18
Noise Figure (dB)
5
4
NF
10
6
2
Vc=+1.2V
Vc=+0.8V
Vc= 0V
Vc=-0.4V
3
2
1
0
17
18
19
20
21
22
23
24
-2
-6
-10
Frequency ( GHz)
Gain & Noise Figure versus Vc
Ref. : DSCHA22922108 - 18-Apr.-02
4/6
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
Gain (dB)
6
14
17-24GHz LNA VGA
Chip Assembly and Mechanical Data
CHA2292
234
234
Note : Supply feed should be capacitively bypassed. 25µm diameter gold wire is recommended
Bond Pad:100 x 100 µm
Bonding pad positions
( Chip thickness : 100µm. All dimensions are in micrometers )
Ref. : DSCHA22922108 - 18-Apr.-02
5/6
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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