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2.3GHz to 2.7GHz MIMO Wireless Broadband
RF Transceiver
Typical Operating Characteristics
(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.)
90
SINGLE RX SUPPLY CURRENT
vs. SUPPLY VOLTAGE
140
DUAL RX SUPPLY CURRENT
vs. SUPPLY VOLTAGE
T A = +85°C
50
NOISE FIGURE
vs. BASEBAND GAIN SETTING
85
80
T A = +85°C
130
120
40
LNA = MAX - 32d B
30
75
110
T A = +25 ° C
T A = -40 ° C
20
LNA = MAX - 16d B
70
T A = +25 ° C
T A = -40 ° C
100
65
90
10
LNA = MAX - 8dB
60
2.7
3.0 3.3
3.6
80
2.7
3.0 3.3
3.6
0
0
9
18 27 36 45
LNA = MAX
54 63
SUPPLY VOLTAGE (V)
RX VOLTAGE GAIN vs. FREQUENCY
SUPPLY VOLTAGE (V)
RX VOLTAGE GAIN
vs. FREQUENCY (MAXIMUM LNA GAIN)
BASEBAND VGA CODE
RX VOLTAGE GAIN
vs. BASEBAND GAIN SETTING
110
LNA = MAX
103
T A = -40 ° C
120
100
90
LNA = MAX - 8d B
101
80
LNA = MAX - 8d B
LNA = MAX
80
70
LNA = MAX - 16dB
99
T A = +25 ° C
60
LNA = MAX - 32dB
97
40
LNA = MAX - 16d B
50
40
95
T A = +85°C
0
LNA = MAX - 32dB
2300
2380
2460 2540
2620
2700
2300
2380
2460 2540
2620
2700
0
9
18 27 36 45
54
63
FREQUENCY (MHz)
RX OUTPUT V 1dB vs. GAIN SETTING
1.6
1.2
FREQUENCY (MHz)
50
45
BASEBAND VGA CODE
RX ISOLATION vs. LNA GAIN SETTING
LNA = MAX - 8dB
LNA = MAX - 32dB
0.8
0.4
0
40
35
30
LNA = MAX - 16dB
LNA = MAX
0
9
18 27 36 45
54
63
-35
-25 -15 -5
5
BASEBAND VGA CODE
LNA GAIN SETTING (dB)
10
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