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2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
Typical Operating Characteristics (continued)
(MAX2831 EV kit, V CC_ = 2.8V, V CCPA = V CCTXPA = 3.3V, T A = +25°C, f LO = 2.437GHz, f REF = 40MHz, SHDN = CS = high, RXHP =
SCLK = DIN = low.)
HISTOGRAM: Rx GAIN IMBALANCE
HISTOGRAM: Rx PHASE IMBALANCE
Tx I CC vs. V CC
138
115
MEAN: 0dB
STD: 0.064dB
SAMPLE SIZE: 951
114
95
MEAN: 0.3 °
STD: 0.314 °
SAMPLE SIZE: 1013
88
86
T A = +85°C
T A = +25°C
92
69
46
76
57
38
84
82
23
19
80
T A = -40°C
0
1 σ /div
0
1 σ /div
78
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
V CC (V)
HISTOGRAM: Tx SIDEBAND
HISTOGRAM: Tx OUTPUT POWER
HISTOGRAM: Tx LO LEAKAGE
SUPPRESSION
VARIATION
48
40
MEAN: -33.45dBc
STD: 6.31dB
SAMPLE SIZE: 999
72
60
MEAN: -42dBc
STD: 1.9dB
SAMPLE SIZE: 1000
12
10
MEAN: 18.5dBm
GAIN ADJUSTED
TO ACHIEVE 5.6%
EVM
32
24
16
8
48
36
24
12
8
6
4
2
0
1 σ /div
0
1 σ /div
0
0.1dB/div
0
-10
Tx BASEBAND FREQUENCY RESPONSE
0
-0.5
Tx OUTPUT POWER vs. FREQUENCY
(B6:B1 = 111111)
(MAX2832 ONLY)
0
-5
Tx OUTPUT POWER vs. GAIN SETTING
(MAX2832 ONLY)
-20
-30
-40
-1.0
-1.5
-2.0
T A = -40°C
T A = +25°C
-10
-15
-20
-50
-60
-70
-80
-2.5
-3.0
-3.5
T A = +85°C
-25
-30
-35
-90
0.1
1
10
100
-4.0
2.40
2.42
2.44 2.46
2.48
2.50
-40
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64
BASEBAND FREQUENCY (MHz)
FREQUENCY (GHz)
GAIN SETTINGS
14
______________________________________________________________________________________
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