GPS/GNSS LNAs with Antenna Switch and Bias
Typical Operating Characteristics (continued)
(MAX2674/MAX2676 EV Kit. Typical values are at V CC = 3.3V, T A = +25 N C, unless otherwise specified.)
25
MAX2676 GAIN vs. FREQUENCY
0
MAX2676 REVERSE ISOLATION
vs. FREQUENCY
0
MAX2676 OUTPUT RETURN LOSS
vs. FREQUENCY
20
15
LNA
-10
-20
ANTENNA
-5
-10
10
5
0
-30
-40
LNA
-15
-20
-25
ANTENNA
LNA
-5
-50
-30
-10
ANTENNA
-60
-35
-15
6.0
500 750 1000 1250 1500 1750 2000 2250 2500
FREQUENCY (MHz)
MAX2676 ACTIVE PATH IN-BAND IIP3
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TWO TONES LOCATED AT 1MHz
AND 2MHz OFFSET WITH -30dBm/TONE)
-70
32.0
500 750 1000 1250 1500 1750 2000 2250 2500
FREQUENCY (MHz)
MAX2676 ANTENNA PATH IN-BAND IIP3
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TWO TONES LOCATED AT 1MHz
AND 2MHz OFFSET WITH -10dBm/TONE)
-40
500 750 1000 1250 1500 1750 2000 2250 2500
FREQUENCY (MHz)
MAX2676 ACTIVE PATH OUT-OF-BAND IIP3
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TONE1 AT -27dBm/1713MHz,
TONE2 AT -39dBm/1851MHz)
8
5.5
5.0
4.5
4.0
3.5
3.0
2.5
+85°C
+25°C
-40°C
31.5
31.0
30.5
30.0
29.5
+85°C
+25°C
-40°C
7
6
5
4
3
2
+85°C
+25°C
-40°C
2.0
29.0
1
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
MAX2676 ACTIVE PATH INPUT P2dB
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TONE1 AT -27dBm/1713MHz, TONE2 AT -39dBm/1851MHz)
-2
-3
-4
4
3
2
MAX2676 ACTIVE PATH 2dB GAIN
DESENSE vs. BLOCKER FREQUENCY
-5
-6
-7
-8
-9
-10
-11
+25°C
+85°C
-40°C
1
0
-1
-2
-3
-4
-5
-12
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
-6
500 750 1000 1250 1500 1750 2000 2250 2500
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
5
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