Maxim Integrated MAX2771 - Page 13

(MAX2771 EV kit, V
CC
= 2.7V to 3.3V, T
A
= -40°C to +85°C. Registers are set to the default power-up states. LNA input is driven from
a 50Ω source. LNA input has specied external matching circuit. All RF measurements are done in the analog output mode with ADC
bypassed. PGA gain is set to GAININ = 111010 except for IF lter response plots in which case it is set to GAININ = 000100. For IF lter
response plots, MIXPOLE = 1. Maximum IF output load is not to exceed 10kΩ||7.5pF on each pin. Typical values are at V
CC
= 2.85V
and T
A
= +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
-20
-15
-10
-5
0
1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2
HIGH-
BAND MIXER INPUT RETURN LOSS (dB)
FREQUENCY (MHz)
HIGH-BAND MIXER INPUT RETURN LOSS
vs. FREQUENCY
toc28
6
8
10
12
14
16
18
0 5 10 15 20 25 30 35 40 45 50 55 60 65
HIGH-
BAND NOISE FIGURE (MIXER INPUT) (dB)
PGA GAIN CODE (°)
HIGH-BAND NOISE FIGURE (MIXER INPUT)
vs. PGA GAIN CODE
toc25
30
40
50
60
70
80
90
100
110
0 5 10 15 20 25 30 35 40 45 50 55 60 65
LOW-
BAND MIXER INPUT REFERRED GAIN (dB)
PGA GAIN CODE (°)
LOW-BAND MIXER INPUT REFERRED GAIN
vs. PGA GAIN CODE
toc29
T
A
= =85°°C
T
A
= 25ºC
T
A
= -40ºC
6
8
10
12
14
16
18
20
0 5 10 15 20 25 30 35 40 45 50 55 60 65
LOW-
BAND NOISE FIGURE (MXER INPUT) (dB)
PGA GAIN CODE (°)
LOW-BAND NOISE FIGURE (MIXER INPUT)
vs. PGA GAIN CODE
toc26
-20
-15
-10
-5
0
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8
HIGH-
BAND MIXER INPUT RETURN LOSS (dB)
FREQUENCY (MHz)
LOW-BAND MIXER INPUT RETURN LOSS
vs. FREQUENCY
toc30
30
40
50
60
70
80
90
100
110
0 5 10 15 20 25 30 35 40 45 50 55 60 65
HIGH-
BAND MIXER INPUT REFERRED GAIN (dB)
PGA GAIN CODE (°)
HIGH-BAND MIXER INPUT REFERRED GAIN
vs. PGA GAIN CODE
toc27
T
A
= =85ºC
T
A
= -40ºC
T
A
= 25ºC
Maxim Integrated │ 13
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MAX2771 Multiband Universal GNSS Receiver