MAX2832ETMT Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2832ETMT Datasheet PDF : 34 Pages
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2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
Typical Operating Characteristics
(MAX2831 EV kit, VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fLO = 2.437GHz, fREF = 40MHz, SHDN = CS = high, RXHP =
SCLK = DIN = low.)
Rx ICC vs. VCC
67
66
TA = +85°C
65
64
63
TA = +25°C
62
TA = -40°C
61
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VCC (V)
NOISE FIGURE
vs. BASEBAND GAIN SETTINGS
45
40
LNA = LOW GAIN
35
30
25
LNA = MEDIUM GAIN
20
15
10
LNA = HIGH GAIN
5
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
BASEBAND GAIN SETTINGS
Rx VOLTAGE GAIN
vs. BASEBAND GAIN SETTING
100
90 LNA = HIGH GAIN
80
70
60
50
40
30
LNA = MEDIUM GAIN
20
10
LNA = LOW GAIN
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
BASEBAND GAIN SETTINGS
Rx IN-BAND OUTPUT P-1dB vs. GAIN
0
-1
-2
LNA MEDIUM/HIGH-
GAIN SWITCH POINT
-3
LNA MEDIUM/LOW-
-4
GAIN SWITCH POINT
-5
-6
-7
15 25 35 45 55 75 85 95
GAIN (dB)
Rx EVM vs. PIN
22
20 LNA = HIGH GAIN
LNA = LOW GAIN
18
LNA = MEDIUM GAIN
16
14
12
10
8
6
4
2
0
-80 -70 -60 -50 -40 -30 -20 -10 0
PIN (dBm)
Rx EVM vs. VOUT
3.0
PIN = -50dBm
2.5 LNA = HIGH GAIN
2.0
1.5
1.0
0.5
0
-29 -27 -25 -23 -21 -19 -17 -15 -13 -11 -9
VOUT (dBVRMS)
OFDM EVM WITH OFDM JAMMER
vs. OFFSET FREQUENCY
15
14 PIN = -62dBm
13
fOFFSET = 20MHz
12
11
10
9
fOFFSET = 25MHz
8
7
6
5
4
3
2
1
fOFFSET = 40MHz
0
-65
-55
-45
-35
-25
PJAMMER (dBm)
Rx EMISSION SPECTRUM, LNA INPUT
-40
MAX2831/32 toc08
RBW = 300kHz
-50
LNA = LOW GAIN
-60
-70
-80
-90
-100
-110
-120
-130
-140
DC
26.5GHz
LNA INPUT RETURN LOSS
vs. RF FREQUENCY
-5
MID GAIN
-10
-15
-20
LOW GAIN
-25
HIGH GAIN
-30
2300 2350 2400 2450 2500 2550 2600
RF FREQUENCY (MHz)
______________________________________________________________________________________ 11
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