RMPA5251 データシートの表示（PDF） - Fairchild Semiconductor
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RMPA5251 Datasheet PDF : 10 Pages
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Typical Characteristics (802.11a) (continued)
Low Band Configuration
High Band Configuration
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
4
RMPA5251 Detector Voltage 4.9 - 5.35 GHz OFDM
54 Mbps Modulation VC = VM = 3.3V, ICQ = 184mA,
IMQ = 16mA, T = 25°C Low Band Configuration
4.90 GHz
4.95 GHz
5.00 GHz
5.05 GHz
5.10 GHz
5.15 GHz
5.20 GHz
5.25 GHz
5.30 GHz
5.35 GHz
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Total Channel Power 16.7 MHz (dBm)
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
4
RMPA5251 Detector Voltage 5.15 - 5.85 GHz OFDM
54 Mbps Modulation VC = VM = 3.3V, ICQ = 184mA,
IMQ = 16mA, T = 25°C High Band Configuration
5.15 GHz
5.25 GHz
5.35 GHz
5.45 GHz
5.55 GHz
5.65 GHz
5.75 GHz
5.85 GHz
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Total Channel Power 16.7 MHz (dBm)
Low Band Configuration
RMPA5251 Performance vs. Change in Mirror Voltage (VM)*
RMPA5251 Total Current vs. VM vs. Modulated Output
Power VC = 3.3V, Frequency = 5.25 GHz, T = 25°C, Low Band Configuration
280
VM
260
3.3V
3.2V
240
3.1V
3.0V
220
2.9V
200
Gain and Total Quiescent Current vs. Mirror Voltage (VM)
Frequency = 5.25 GHz, VC = 3.3V, T = 25°C, Low Band Configuration
30
240
29
Gain
230
28
220
27
210
26
200
25
190
180
160
140
120
100
3
5 7 9 11 13 15 17 19 21 23
Modulated Output Power (dBm)
24
23
22
21
20
19
2.9
Total Current
3.0
3.1
3.2
Mirror Voltage, VM (V)
180
170
160
150
140
130
3.3
VM:
2.9V
3.0V
3.1V
3.2V
3.3V
Low Band Configuration
*Total current can be varied by resetting the quiescent current
by means of adjusting the mirror voltage, VM.
RMPA5251 Modulated Output Power (OFDM 54 Mbps)
at 2% and 3% EVM vs. Mirror Voltage vs. Frequency,
VC=3.3V, T=25°C
RMPA5251 Output Power for 2% EVM Increase for
VM = 2.9 to VM = 3.3V 802.11a 54 Mbps OFDM Modulation
20
19
RMPA5251 Output Power for 3% EVM Increase for
VM = 2.9 to VM = 3.3V 802.11a 54 Mbps OFDM Modulation
20
3.3V
3.2V
19
3.1V
18
18 3.0V
17 3.3V
3.2V
16
3.1V
2.9V
17
16
15 3.0V
2.9V
14
5.15
Includes 0.8% System Level EVM
5.2
5.25
5.3
5.35
Frequency (GHz)
VM = 2.9 V Itotal = 142 mA
VM = 3.1 V Itotal = 170 mA
VM = 3.3 V Itotal = 200 mA
VM = 3.0 V Itotal = 155 mA
VM = 3.2 V Itotal = 185 mA
15
14
5.15
Includes 0.8% System Level EVM
5.2
5.25
5.3
5.35
Frequency (GHz)
VM = 2.9 V Itotal = 142 mA
VM = 3.1 V Itotal = 170 mA
VM = 3.3 V Itotal = 200 mA
VM = 3.0 V Itotal = 155 mA
VM = 3.2 V Itotal = 185 mA
©2004 Fairchild Semiconductor Corporation
RMPA5251 Rev. D
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