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2.3GHz to 2.7GHz MIMO Wireless Broadband
RF Transceiver
Typical Operating Characteristics (continued)
(V CC = 2.8V, T A = +25°C, f LO = 2.5GHz, f REF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50 Ω
unbalanced output of balun, using the MAX2839 Evalutation Kit.)
150
TX SUPPLY CURRENT vs. SUPPLY VOLTAGE
10
TX BASEBAND FREQUENCY RESPONSE
CHANNEL BW
2
TX BASEBAND FREQUENCY RESPONSE
0
= 28MHz
1
CHANNEL BW = 28MHz
146
T A = +85°C
-10
0
142
138
T A = +25 ° C
T A = -40 ° C
-20
-30
-40
CHANNEL BW
= 1.5MHz
CHANNEL BW
= 5MHz
-1
-2
-3
CHANNEL BW
= 1.5MHz
CHANNEL BW
-50
CHANNEL BW
-4
= 5MHz
134
-60
= 10MHz
-5
CHANNEL BW
= 10MHz
130
-70
-6
2.7
3.0 3.3
3.6
0.1
1 10
100
0.1
1 10
100
4
SUPPLY VOLTAGE (V)
TX OUTPUT POWER vs. FREQUENCY
10
FREQUENCY (MHz)
TX OUTPUT POWER vs. GAIN SETTING
FREQUENCY (MHz)
TX OUTPUT SPECTRUM
(10MHz CHANNEL BANDWIDTH, 16 QAM FUSC)
3
TX GAIN SET TO MAX - 3dB
-70dBr
P OUT = 0dBm
2
T A = -40°C
-10
T A = -40 ° C
1
0
T A = +25°C
-30
T A = +25 ° C
10dB/div
MASK
-1
T A = +85°C
-2
-3
-4
T A = +85°C
-50
-70
0dBr
2300 2350 2400 2450 2500 2550 2600 2650 2700
0
16
32
48
64
2.495GHz
2.5GHz
2.555GHz
FREQUENCY (MHz)
TX OUTPUT SPECTRUM
TX GAIN CODE
(10MHz CHANNEL BANDWIDTH, 64 QAM FUSC)
-30
TX CARRIER LEAKAGE vs. FREQUENCY
-20
TX CARRIER LEAKAGE vs. GAIN SETTING
-70dBr
P OUT = 0dBm
-35
-40
TX GAIN SET TO MAX - 3dB
T A = -40 ° C
-25
-30
-35
T A = +85°C
T A = -40°C
MASK
-40
10dB/div
-45
-45
-50
-50
T A = +85°C
-55
0dBr
-55
T A = +25 ° C
-60
-65
T A = +25°C
-60
-70
2.495GHz
2.5GHz
2.555GHz
2300 2350 2400 2450 2500 2550 2600 2650 2700
0
9
18
27 36 45
54
63
FREQUENCY (MHz)
TX GAIN CODE
______________________________________________________________________________________
15
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