
MAX2691
L2 Band GPS Low-Noise Amplifier
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2691 EV kit, V CC = 1.6V to 3.6V, T A = -40°C to +85°C, f RFIN = 1227MHz. Typical values are at V CC = 2.85V and T A = +25°C,
unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Return Loss
Reverse Isolation
15.6
45
dB
dB
Note 2: Min and max limits guaranteed by test at T A = +25°C and guaranteed by design and characterization at T A = -40°C and
T A = +85°C, unless otherwise noted.
Note 3: Min and max limits guaranteed by test at T A = +25°C.
Note 4: Min limit guaranteed by design and characterization.
Note 5: Measured with the two tones located at 1MHz and 2MHz offset from the center of the GPS band with -30dBm/tone.
Note 6: Measured with a tone located at 5MHz offset from the center of the GPS band.
Typical Operating Characteristics
(MAX2691 EV kit. Typical values are at V CC = 2.85V, T A = +25°C, and f RFIN = 1227MHz, unless otherwise noted.)
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
INPUT RETURN LOSS vs. FREQUENCY
20
15
10
5
0
-5
-10
GAIN vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
REVERSE ISOLATION vs. FREQUENCY
500
1000
1500
2000
2500
500
1000
1500
2000
2500
500
1000
1500
2000
2500
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
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