Rainbow Electronics MAX2670 - Manual (Page 4)

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MAX2670
GPS/GNSS Front-End Amplifier
Typical Operating Characteristics (continued)
(P
IN
= -40dBm, f
IN
= 1575MHz, inputs and outputs are terminated to 50I, V
CC
= 5.0V, T
A
= +25NC, unless otherwise noted.)
17.4
17.3
17.6
17.5
17.8
17.7
17.9
18.0
18.1
3.0 4.0 3.5 4.5 5.0 5.5
AMP 1 GAIN vs. SUPPLY VOLTAGE
(WITH EXTERNAL INPUT IMPEDANCE MATCH)
MAX2670 toc04
SUPPLY VOLTAGE (V)
GAIN (dB)
T A = +105°C
T
A
= +85°C
T A = +25°C
T
A
= -40°C
16.0
15.5
17.0
16.5
18.0
17.5
3.0 4.0 3.5 4.5 5.0 5.5
AMP 2 GAIN vs. SUPPLY VOLTAGE
(PIN 7 OPEN)
MAX2670 toc05
SUPPLY VOLTAGE (V)
GAIN (dB)
T
A
= +105°C
T A = +85°C
T A = +25°C
T A = -40°C
13.0
12.5
12.0
14.0
13.5
15.0
14.5
3.0 4.0 3.5 4.5 5.0 5.5
AMP 2 GAIN vs. SUPPLY VOLTAGE
(PIN 7 SHORT TO GND)
MAX2670 toc06
SUPPLY VOLTAGE (V)
GAIN (dB
)
T
A
= +105°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
13
12
15
14
17
16
18
19
20
800 1200 1000 1400 1600 1800 2000
AMP 1 GAIN vs. FREQUENCY
(WITH EXTERNAL INPUT IMPEDANCE MATCH)
MAX2670 toc07
FREQUENCY (MHz)
GAIN (dB)
2
0
6
4
10
8
12
14
16
18
800 1200 1000 1400 1600 1800 2000
AMP 2 GAIN vs. FREQUENCY
MAX2670 toc08
FREQUENCY (MHz)
GAIN (dB)
LOW-GAIN MODE
HIGH-GAIN MODE
-22
-20
-21
-19
-18
-17
-16
-40 0 20 -20 40 60 80 100
AMP 1 INPUT P
1dB
vs. TEMPERATURE
(WITHOUT EXTERNAL INPUT IMPEDANCE MATCH)
MAX2670 toc09
TEMPERATURE (°C)
INPUT P
1dB
(dBm)
4.8
5.2
5.0
5.4
5.6
5.8
-40 0 20 -20 40 60 80 100
AMP 2 OUTPUT P
1dB
vs. TEMPERATURE
(PIN 7 OPEN)
MAX2670 toc10
TEMPERATURE (°C)
OUTPUT P
1dB
(dB)
-4.5
-5.0
-3.5
-4.0
-2.5
-3.0
-2.0
800 1200 1000 1400 1600 1800 2000
AMP 1 S11
(WITHOUT EXTERNAL INPUT IMPEDANCE MATCH)
MAX2670 toc11
FREQUENCY (MHz)
S11 (dB)
-14
-16
-10
-12
-6
-8
-4
800 1200 1000 1400 1600 1800 2000
AMP 1 S22
MAX2670 toc12
FREQUENCY (MHz)
S22 (dB)