United Monolithic Semiconductors CHA2094b99F-00 Datasheet
CHA2094b
Gain & NF ( dB )
36-40GHz Low Noise High Gain Amplifier
GaAs Monolithic Microwave IC
Description
The CHA2094 is a three-stage monolithic low
noise amplifier. It is designed for a wide range
of applications, from military to commercial
communication systems.
The circuit is manufactured with a HEMT
process : 0.25µm gate length, via holes through
the substrate, air bridges and electron beam
gate lithography.
It is available in chip form.
Main Features
Broadband performances : 36-40GHz
3.0dB Noise Figure
21dB gain
±1.5dB gain flatness
Low DC power consumption, 60mA @ 3.5V
Chip size : 1.72 X 1.08 X 0.10 mm
Vds
IN
Vgs1&2 Vgs3
Typical on wafer measurements :
24
20
16
12
8
4
0
34 35 36 37 38 39 40 41 42
Vds
OUT
Frequency (GHz)
Main Characteristics
Tamb. = 25°C
Symbol Parameter Min Typ Max Unit
Fop Operating frequency range 36 40 GHz
G Small signal gain 18 21 dB
P1dB Output power at 1dB gain compression 5 8 dBm
NF Noise figure 3.0 4.0 dB
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHA20949312 – 08-Nov.-99 1/8 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
CHA2094b
36-40GHz Low Noise Amplifier
Electrical Characteristics
Tamb = +25°C, Vd1,2,3 = 3.5V
Symbol Parameter Min Typ Max Unit
Fop Operating frequency range (1) 36 40 GHz
G Small signal gain (1) 18 21 dB
∆G
∆Gsb
Is Reverse isolation (1) 25 30 dB
P1dB Output power at 1dB gain compression 5 8 dBm
VSWRin Input VSWR (1) 2.5:1 3.0:1
VSWRout Output VSWR (1) 2.5:1 3.0:1
NF Noise figure (2) 3.0 4.0 dB
Vd DC Voltage Vd
Id Bias current (2) 60 100 mA
(1) These values are representative of on-wafer measurements that are made without bonding
wires at the RF ports.
(2) 60 mA is the typical bias current used for on wafer measurements, with Vg1,2 = Vg3. For
optimum noise figure, the bias current could be reduced down to 40 mA, adjusting the Vg1,2
voltage.
Small signal gain flatness (1)
Gain flatness over 40MHz ( within -30 ; +75°C ) 0.5 dBpp
Vg -2
±1.5
3.5
-0.25
4
+0.4
dB
V
V
Absolute Maximum Ratings
Tamb. = 25°C (1)
Symbol Parameter Values Unit
Vd Drain bias voltage 5.0 V
Id Drain bias current 150 mA
Vg Gate bias voltage -2.0 to +0.4 V
Pin Maximum peak input power overdrive (2) +15 dBm
Ta Operating temperature range -40 to +85 °C
Tstg Storage temperature range -55 to +155 °C
(1) Operation of this device above anyone of these parameters may cause permanent damage.
(2) Duration < 1s.
Ref. : DSCHA20949312 – 08-Nov.-99 2/8 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
36-40GHz Low Noise Amplifier
CHA2094b
Typical Scattering Parameters ( On wafer Sij measurements )
Bias Conditions : Vd = 3.5 Volt, Id = 60 mA.
Freq.
GHz
25,00 -2,96 165,27 -48,02 140,03 -16,95 -110,44 -10,05 -118,86
26,00 -3,22 155,96 -49,76 133,48 -11,32 -109,43 -10,84 -124,50
27,00 -3,67 144,32 -51,68 113,25 -5,73 -112,96 -11,84 -133,29
28,00 -4,43 129,06 -53,38 148,20 0,02 -123,12 -13,68 -140,35
29,00 -5,76 107,80 -51,07 153,30 5,87 -138,63 -15,98 -152,02
30,00 -8,60 75,37 -49,11 129,75 11,83 -163,77 -21,67 -162,85
31,00 -15,20 16,43 -43,10 102,32 17,22 158,34 -29,55 -46,20
32,00 -24,70 -117,32 -41,34 47,85 19,91 110,72 -17,96 -70,62
33,00 -32,32 128,04 -41,14 -5,29 20,48 71,50 -17,40 -106,13
34,00 -21,29 -38,29 -40,51 -43,14 20,60 40,20 -19,96 -133,62
35,00 -14,52 -70,72 -39,47 -69,20 20,79 12,71 -24,56 178,55
36,00 -11,33 -94,87 -38,30 -90,11 20,92 -13,60 -24,34 95,27
37,00 -9,96 -113,38 -37,80 -109,61 20,87 -38,94 -18,55 56,67
38,00 -9,89 -129,95 -35,94 -126,74 20,54 -63,47 -14,97 35,23
39,00 -10,20 -144,39 -35,21 -146,49 19,98 -85,35 -13,19 15,89
40,00 -11,51 -153,53 -34,78 -160,72 19,57 -105,56 -11,91 7,58
41,00 -13,21 -157,59 -34,26 -175,92 18,86 -125,69 -10,90 -5,61
42,00 -13,92 -154,55 -33,87 172,60 18,41 -143,91 -10,93 -16,38
43,00 -13,55 -158,17 -33,94 156,97 18,09 -160,70 -11,24 -20,60
44,00 -13,26 -169,25 -33,11 149,30 17,84 -178,94 -10,76 -22,75
45,00 -12,63 174,58 -32,50 134,15 17,56 162,79 -10,73 -25,23
46,00 -11,41 151,40 -32,48 126,00 17,17 143,77 -10,27 -26,04
47,00 -10,18 125,52 -31,57 119,05 16,79 124,08 -9,19 -30,65
48,00 -8,38 94,26 -29,97 102,75 16,21 102,47 -8,20 -37,96
49,00 -5,83 71,80 -31,11 79,31 15,23 80,21 -7,79 -48,28
50,00 -4,17 49,01 -32,37 66,58 13,86 58,54 -7,34 -61,88
51,00 -2,17 29,23 -36,86 59,57 12,36 38,69 -8,29 -75,36
52,00 -1,17 11,23 -34,48 52,60 10,48 19,05 -9,08 -85,34
53,00 -0,84 -2,48 -38,67 15,86 8,26 1,67 -9,77 -96,49
54,00 -0,55 -14,01 -40,49 -6,97 5,94 -13,96 -10,59 -106,13
55,00 -0,36 -22,96 -42,95 -5,11 3,49 -27,62 -11,16 -116,76
S11
dB
S11
//°
S12
dB
S12
//°
S21
dB
S21
//°
S22
dB
S22
//°
Ref. : DSCHA20949312 – 08-Nov.-99 3/8 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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