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Maxim RRFP1A/T Bedienungsanleitung Seite 17

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Seitenansicht 16
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
1k 10k 100k 1M 10M
CLOSED-LOOP PHASE NOISE
MAX2828/9 toc22
FREQUENCY OFFSET (Hz)
(dBm)
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-150
(kHz)
0
50
40
-40
30
-30
20
-20
10
-10
-50
0 250
TIME (µs)
CHANNEL-SWITCHING FREQUENCY SETTLING
(2500MHz TO 2400MHz)
MAX2828/9 toc23
-25kHz
5kHz/div
25kHz
0
TIME (µs)
50
TX-RX TURNAROUND
FREQUENCY SETTLING
MAX2828/9 toc24
Typical Operating Characteristics (continued)
(V
CC
= 2.7V, f
RF
= 2.437GHz (802.11g) or f
RF
= 5.25GHz (802.11a), f
REFOSC
= 40MHz, SHDN = CS = high, RXHP = SCLK = DIN =
low, R
BIAS
= 11kΩ, T
A
= +25°C using the MAX2828/MAX2829 evaluation kits.)
-6
-5
-1
-3
0
-2
-4
1
2.7 3.42.8 2.9 3.1 3.3 3.53.0 3.2 3.6
TX OUTPUT POWER vs. V
CC
(B6:B1 = 111111)
MAX2828/9 toc16
V
CC
(V)
P
OUT
(dBm)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
-6
-5
-1
-3
0
-2
-4
1
2.40 2.482.42 2.44 2.46 2.50
TX OUTPUT POWER vs. FREQUENCY
(B6:B1 = 111111)
MAX2828/9 toc17
FREQUENCY (GHz)
P
OUT
(dBm)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
-100
-40
-60
-80
-90
-20
-30
-50
(dBm/100kHz)
-70
-10
2.397GHz 2.477GHz
TX OUTPUT SPECTRUM
(54Mbps OFDM SIGNAL)
MAX2828/9 toc18
B6:B1 = 111011
B6:B1 = 110101
-100
-40
-60
-80
-90
-20
-30
-50
-70
-10
0
1MHz
(dBm)
26.5GHz
TX OUTPUT SPECTRUM
MAX2828/9 toc19
f = 2.4GHz
f = 2.48GHz
f = 2.56GHz
f = 6.4GHz
-35
-25
-30
-5
-15
P
OUT
(dBm)
-20
-10
0
0 8 16 24 32 40 48 64
GAIN SETTINGS
56
TX OUTPUT POWER
vs. GAIN SETTINGS
MAX2828/9 toc20
2.30
2.32
2.40
2.36
2.58
2.48
RF LO (GHz)
2.44
2.52
2.38
2.34
2.56
2.54
2.46
2.42
2.50
2.60
0.4 0.6 0.8 1.0 1.2 1.4 1.6 2.4
V
TUNE
(V)
2.01.8 2.2
LO FREQUENCY
vs. V
TUNE
MAX2828/9 toc21
802.11g
MAX2828/MAX2829
Maxim Integrated
17
Seitenansicht 16
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