300MHz to 2500MHz SiGe
Ultra-Low-Noise Amplifiers
Table 1. MAX2640 Typical Scattering Parameters at V CC = +3V, T A = +25°C
FREQUENCY
(MHz)
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
S11
MAG
0.907
0.882
0.858
0.832
0.810
0.788
0.771
0.749
0.735
0.720
0.702
0.688
PHASE
-35.1
-43.1
-50.8
-58.1
-64.9
-71.0
-76.6
-82.3
-88.0
-93.4
-98.8
-104.9
S21
MAG
4.62
4.70
4.76
4.80
4.85
4.77
4.74
4.55
4.48
4.24
4.17
3.81
PHASE
109.1
90.4
70.7
50.6
29.5
9.2
-12.0
-32.4
-53.4
-75.9
-94.9
-117.5
S12
MAG
0.001
0.001
0.001
0.002
0.004
0.005
0.007
0.010
0.013
0.015
0.021
0.024
PHASE
13.5
64.7
55.2
39.4
64.2
36.3
28.0
12.3
-10.6
-28.2
-42.9
-59.8
S22
MAG
0.302
0.33
0.352
0.365
0.384
0.396
0.412
0.436
0.455
0.469
0.482
0.489
PHASE
108.4
93.6
81.5
69.4
56.8
44.7
33.5
21.9
10.7
-0.2
-9.9
-20.2
Table 2. MAX2641 Typical Scattering Parameters at V CC = +3V, T A = +25°C
FREQUENCY
(MHz)
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
S11
MAG
0.734
0.717
0.695
0.678
0.661
0.646
0.632
0.620
0.610
0.604
0.603
PHASE
-75.5
-80.3
-85.3
-90.6
-96.6
-102.6
-108.8
-114.0
-119.4
-124.6
-128.4
S21
MAG
4.397
4.209
4.193
3.876
3.801
3.456
3.302
2.981
2.781
2.430
2.118
PHASE
-90.5
-109.8
-131.6
-150.0
-173.5
166.9
146.4
123.6
105.3
82.9
64.7
S12
MAG
0.013
0.016
0.018
0.021
0.023
0.026
0.028
0.029
0.033
0.032
0.030
PHASE
-80.3
-91.9
-116.5
-128.7
-150.6
-166.6
171.7
150.7
132.2
111.2
95.7
S22
MAG
0.535
0.514
0.513
0.510
0.493
0.470
0.431
0.403
0.374
0.338
0.316
PHASE
17.7
8.6
-0.5
-10.6
-21.6
-32.0
-43.4
-56.1
-69.4
-86.2
-98.3
6
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