MAX2686L /MAX2693L
GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Table 1. MAX2686L Typical S Parameter Values and K-Factor
FREQ
(MHz)
1000
1100
1200
1300
1400
1500
1575
1600
1700
1800
1900
2000
S11 MAG
(dB)
-2.7
-2.9
-3.2
-3.4
-3.5
-3.3
-3.5
-3.7
-3.6
-3.5
-3.7
-4.0
S11
PHASE
(DEGREES)
-88.3
-95.0
-101.7
-107.4
-113.3
-120.2
-125.7
-126.8
-131.1
-139.0
-146.3
-152.0
S21 MAG
(dB)
7.9
9.6
11.2
12.8
14.4
16.0
16.8
16.8
16.5
16.1
15.2
13.8
S21
PHASE
(DEGREES)
162.0
150.5
136.9
122.2
104.8
85.4
66.9
58.4
34.7
12.9
-7.7
-24.4
S12 MAG
(dB)
-56.7
-48.5
-45.5
-49.2
-47.4
-50.7
-44.6
-43.4
-49.8
-51.0
-41.9
-41.8
S12
PHASE
(DEGREES)
101.9
57.5
64.8
51.0
1.8
19.3
29.9
15.5
-7.5
39.5
7.5
-10.7
S22 MAG
(dB)
-1.9
-2.4
-3.1
-4.4
-6.8
-11.9
-26.0
-24.3
-10.1
-5.4
-3.0
-1.9
S22
PHASE
(DEGREES)
-153.8
-169.9
172.8
153.8
132.5
102.3
46.7
-79.5
-125.4
-148.1
-169.7
170.5
K f
16.1
9.8
7.4
6.6
6.9
7.8
5.9
5.1
6.5
4.0
2.2
2.0
Table 2. MAX2693L Typical S Parameter Values and K-Factor
FREQ
(MHz)
1000
1100
1200
1300
1400
1500
1575
1600
1700
1800
1900
2000
S11 MAG
(dB)
-1.0
-1.1
-1.2
-1.3
-1.5
-1.6
-1.6
-1.7
-1.9
-1.8
-2.0
-2.1
S11
PHASE
(DEGREES)
-77.4
-84.8
-92.5
-99.4
-106.5
-113.2
-118.5
-120.6
-126.6
-133.6
-140.7
-146.9
S21 MAG
(dB)
-2.5
0.1
2.7
5.6
8.4
11.0
12.2
12.3
11.5
10.0
8.4
6.9
S21
PHASE
(DEGREES)
-148.6
-159.7
-172.2
171.7
152.1
124.7
99.5
88.4
55.8
30.2
10.0
-4.9
S12 MAG
(dB)
-55.5
-51.0
-48.0
-46.4
-45.9
-46.3
-44.0
-42.4
-45.3
-43.6
-40.1
-39.6
S12
PHASE
(DEGREES)
78.6
85.5
70.0
56.0
35.6
22.2
38.3
22.2
-9.5
12.4
-8.1
-29.9
S22 MAG
(dB)
-0.9
-1.2
-1.6
-2.3
-3.8
-8.0
-14.8
-14.9
-6.5
-3.3
-2.0
-1.5
S22
PHASE
(DEGREES)
-138.2
-154.2
-172.0
167.2
140.1
96.8
23.5
-33.4
-117.5
-152.3
-176.5
164.9
K f
16.1
9.8
7.4
6.6
6.9
7.8
5.9
5.1
6.5
4.0
2.2
2.0
Table 3. MAX2686L Simulated Typical Noise Parameters (V CC = 3.3V, T A = +25°C)
FREQUENCY (MHz)
1550
1560
1570
1580
1590
1600
FMIN (dB)
0.70
0.70
0.70
0.70
0.70
0.71
| G OPT |
0.43
0.43
0.42
0.42
0.42
0.42
| G OPT | ANGLE
45
45
45
45
46
46
R N ( I )
8.45
8.43
8.42
8.41
8.39
8.38
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