MAX2687/MAX2689/MAX2694
GPS/GNSS Low-Noise Amplifiers
Table 1. MAX2687 Typical S Parameter Values and K-Factor
FREQ
(MHz)
1000
1100
1200
1300
1400
1500
1575
1600
1700
1800
1900
2000
S11 MAG
(dB)
-3.9
-4.1
-4.4
-4.3
-4.0
-3.9
-4.5
-4.7
-4.2
-4.2
-4.5
-4.8
S11
PHASE
(DEGREES)
-91.5
-97.6
-103.6
-109.6
-116.9
-127.1
-133.3
-133.6
-140.0
-150.0
-159.2
-166.3
S21 MAG
(dB)
10.1
11.7
13.3
14.6
15.6
17.0
17.3
17.1
17.1
17.0
16.6
15.5
S21
PHASE
(DEGREES)
164.7
152.8
136.5
118.8
102.3
82.1
63.7
56.9
39.7
18.6
-1.5
-20.2
S12 MAG
(dB)
-48.4
-51.2
-47.3
-53.1
-55.0
-45.7
-44.5
-46.9
-48.8
-41.6
-39.2
-37.6
S12
PHASE
(DEGREES)
96.6
47.8
42.2
80.2
152.6
119.1
72.7
36.4
77.8
76.6
39.1
17.5
S22 MAG
(dB)
-2.2
-2.9
-3.9
-5.4
-7.5
-11.7
-18.1
-20.9
-14.7
-8.8
-5.6
-4.0
S22
PHASE
(DEGREES)
-154.8
-175.2
164.0
140.3
112.1
70.7
15.0
-18.1
-100.3
-137.7
-168.2
163.7
K f
10.0
14.0
9.6
19.1
23.4
7.6
7.3
10.1
11.4
4.3
2.9
2.3
Table 2. MAX2689 Typical S Parameter Values and K-Factor
FREQ
(MHz)
1000
1100
1200
1300
1400
1500
1575
1600
1700
1800
1900
2000
S11 MAG
(dB)
-3.8
-3.8
-4.0
-3.9
-3.8
-4.2
-4.2
-4.1
-3.9
-3.8
-3.9
-4.0
S11
PHASE
(DEGREES)
-93.0
-100.5
-107.8
-115.5
-124.9
-133.5
-136.3
-138.4
-146.3
-155.2
-163.6
-170.6
S21 MAG
(dB)
6.0
7.7
9.3
10.8
12.1
13.1
12.9
12.9
13.1
12.7
12.2
11.2
S21
PHASE
(DEGREES)
150.9
140.7
124.7
107.7
89.7
65.2
50.7
45.3
25.9
5.3
-13.7
-29.8
S12 MAG
(dB)
-52.1
-62.5
-53.9
-56.2
-49.8
-43.4
-47.2
-48.3
-51.5
-46.7
-42.9
-41.6
S12
PHASE
(DEGREES)
80.8
44.2
19.6
55.3
124.0
53.2
12.5
12.9
74.0
71.0
43.0
27.0
S22 MAG
(dB)
-1.9
-2.4
-3.2
-4.3
-6.5
-11.5
-14.7
-16.5
-16.0
-9.8
-6.4
-4.5
S22
PHASE
(DEGREES)
-161.7
-178.8
164.4
145.5
124.1
113.3
120.9
126.1
-177.6
-174.3
171.4
154.6
Kf
21.6
68.3
26.5
34.8
17.5
9.6
15.6
17.6
24.1
12.9
7.6
6.1
8
Maxim Integrated
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