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參數(shù)資料
| 型號： | AD8349 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 700 MHz to 2700 MHz Quadrature Modulator |
| 中文描述： | 700兆赫至2700 MHz正交調制器 |
| 文件頁數(shù)： | 22/28頁 |
| 文件大?。?/td> | 969K |
| 代理商： | AD8349 |
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AD8349
Rev. 0 | Page 22 of 28
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A
CH PWR = –23.2dBm
ADJ CPR = –60.7dBm
ALT CPR = –62.3dBm
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CENTER 1.96GHz
SPAN 50MHz
0
Figure 60. 4-Carrier WCDMA Spectral Plot at 2140 MHz,
Including ACPR and Alternate Channel Power Ratio
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CHANNEL POWER (dBm)
A
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3
0
2140 ADJ CPR
2140 ALT CPR
2140 NOISE
1960 ALT CPR
1960 NOISE
1960 ADJ CPR
Figure 61. 4-Carrier WCDMA Adjacent and Alternate Channel Power Ratio
and 30 MHz Noise Floor (dBm/Hz) vs. BB Drive Level at 1960 MHz
and 2140 MHz
GSM/EDGE APPLICATION
Figure 62 and Figure 64 show plots of GMSK error vector
magnitude (EVM), spectral performance, and noise floor
(dBc/100 kHz at 6 MHz carrier offset) at 885 MHz and
1960
MHz. Based on spectral performance, a maximum output
power level of around 2 dBm is appropriate. Note, however, that
as the output power decreases below this level, there is only a
very slight increase in the dBc noise floor. This indicates that
baseband drive variation can be used to control or correct the
gain of the signal chain over a range of at least 5 dB, with little
or no SNR penalty.
Figure 63 and Figure 65 show plots of 8-PSK EVM, spectral
performance, and noise floor at 885 MHz and 1960 MHz.
An LO drive level of approximately –6 dBm is recommended
for GMSK and 8-PSK. A higher LO drive power will improve
the noise floor slightly; however, it also tends to degrade EVM.
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1.0
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4.0
E
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0
2
4
6
CHANNEL POWER (dBm)
0
PEAK NOISE FLOOR
400kHz
600kHz
AVERAGE NOISE FLOOR
EVM
Figure 62.GMSK EVM, Spectral Performance, and Noise Floor
vs. Channel Power ( Frequency = 885 MHz)
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6
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1.0
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E
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–4
–2
0
4
CHANNEL POWER (dBm)
2
0
PEAK NOISE FLOOR
400kHz
600kHz
AVERAGE NOISE FLOOR
EVM
Figure 63. 8-PSK EVM, Spectral Performance, and Noise Floor
vs. Channel Power (Frequency = 885 MHz)
–110
–90
–80
–85
–100
–70
–75
4
6
–60
–65
–50
–55
–95
–105
1.0
1.5
2.0
2.5
3.0
3.5
4.0
E
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1
5
CHANNEL POWER (dBm)
3
0
PEAK NOISE FLOOR
400kHz
600kHz
AVERAGE NOISE FLOOR
EVM
Figure 64. GMSK EVM, Spectral Performance, and Noise Floor
vs. Channel Power (Frequency = 1960 MHz)
相關PDF資料 |
PDF描述 |
|---|---|
| AD8349ARE | 700 MHz to 2700 MHz Quadrature Modulator |
| AD8349ARE-REEL7 | 700 MHz to 2700 MHz Quadrature Modulator |
| AD8350 | Low Distortion 1.0 GHz Differential Amplifier |
| AD8350AR15 | Low Distortion 1.0 GHz Differential Amplifier |
| AD8350AR15-EVAL | Low Distortion 1.0 GHz Differential Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8349ARE | 制造商:Analog Devices 功能描述:Quadrature Mod 160MHz 16-Pin TSSOP EP Tube 制造商:Rochester Electronics LLC 功能描述:DIRECT QUADRATURE MODULATOR - Bulk 制造商:Analog Devices 功能描述:IC MODULATOR QUADRATURE |
| AD8349ARE-REEL7 | 功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:否 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349AREZ | 功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349AREZ-RL7 | 功能描述:IC MOD QUAD 2.7GHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349EVAL | 制造商:Analog Devices 功能描述:IC ((NS)) |
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