MAX2837ETM-TD Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2837ETM-TD Datasheet PDF : 34 Pages
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MAX2837
2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
Typical Operating Characteristics
(MAX2837 evaluation kit: VCC_ = 2.8V, fLO = 2.5GHz, 10MHz channel 16E UL/DL WiMax signal, fREF = 40MHz, ENABLE = CS = high,
RXHP = SCLK = DIN = low, TA = +25°C, unless otherwise noted.)
Rx CURRENT vs. SUPPLY VOLTAGE
97
TA = +85°C
95
93
91
TA = -40°C
TA = +25°C
NOISE FIGURE
vs. BASEBAND VGA GAIN SETTING
40
35
LNA = MAX - 32dB
30
25
LNA = MAX - 16dB
20
Rx VOLTAGE GAIN
vs. BASEBAND GAIN SETTING
100
LNA = MAX - 8dB
80
LNA = MAX
60
89
87
85
2.7
3.0
3.3
3.6
SUPPLY VOLTAGE (V)
15
LNA = MAX - 8dB
10
LNA = MAX
5
0
0
8
16
24
32
BASEBAND VGA CODE
40
LNA = MAX - 16dB
20
LNA = MAX - 32dB
0
0
8
16
24
32
BASEBAND VGA CODE
Rx IN-BAND OUTPUT V1dB
Rx VOLTAGE GAIN VARIATION vs. RF FREQUENCY
vs. BASEBAND GAIN SETTING
2
1.5
22
20
Rx EVM vs. PIN
1 LNA = MAX - 32dB
1.2
18
16
14
0.9
12
0
10
0.6
8
-1
LNA = MAX
LNA = MAX - 8dB
LNA = MAX - 16dB
-2
2.3
2.4
2.5
2.6
2.7
RF FREQUENCY (GHz)
0.3
0
0
8
16
24
32
BASEBAND VGA CODE
6
4
2 LNA = MAX
0
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
PIN (dBm)
WiMAX EVM WITH OFDM JAMMER
vs. OFFSET FREQUENCY
15
14 PIN = -60dBm
13
12
11
10
9
8
7
fOFFSET = 10MHz
6
5
4
3
2
1
fOFFSET = 20MHz
0
-65
-55
-45
-35
-25
PJAMMER (dBm)
Rx EMISSION SPECTRUM AT LNA INPUT
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
MIN LNA GAIN
RBW = 300kHz
-150
DC
26.5GHz
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