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參數資料
| 型號： | AD8345ARE |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 衰減器 |
| 英文描述： | 250 MHz.1000 MHz Quadrature Modulator |
| 中文描述： | 140 MHz - 1000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR |
| 封裝： | MO-153ABT, TSSOP-16 |
| 文件頁數： | 14/16頁 |
| 文件大小： | 372K |
| 代理商： | AD8345ARE |
REV. 0
AD8345
–14–
CDMA IS95
For measuring ACPR, the I and Q input signals used were
generated with Pilot (Walsh Code 00), Sync (WC 32), Paging
(WC 01), and 6 Traffic (WC 08, 09, 10, 11, 12, 13) channels
active. Figure 14 shows the typical output spectrum for this
configuration.
For performing EVM, Rho, phase, and amplitude balance mea-
surements, the I and Q input signals used were generated with
only the Pilot Channel (Walsh Code 00) active.
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90
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80
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70
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60
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50
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40
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30
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20
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10
–
100
–
110
A
–
CENTER = 880MHz
Figure 14. Typical IS95 Output Spectrum
SPAN = 7.5MHz
CH PWR =
–
12.41dBm
ACP UP =
–
72.8dB
ACP LOW =
–
72.8dB
WCDMA 3GPP
For evaluating the AD8345 for WCDMA, the 3GPP standard
was used with a Chip Rate of 3.84 MHz. The plot in Figure 15
is an ACPR plot of the AD8345 using “Test Model 1” from the
3GPP specification with 64 channels active.
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90
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80
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70
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60
–
50
–
40
–
30
–
20
–
10
–
100
–
110
A
–
CENTER = 380MHz
SPAN = 14.7MHz
CH PWR =
–
10.95dBm
ACP UP =
–
52.51dB
ACP LOW =
–
52.41dB
Figure 15. Typical AD8345 WCDMA 3GPP Output Spectrum
GSM
For comparing the AD8345 output to the GSM transmit mask I
and Q signals were generated using MSK modulation, GSM
differential coding, a Gaussian filter and a symbol rate of
270.833 kHz. The transmit mask was manually generated on
the FSIQ using the GSM BTS specification for reference. The
plot in Figure 16 shows that the AD8345 meets the GSM trans-
mit mask requirements.
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90
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80
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70
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60
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50
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40
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30
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20
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10
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100
0
A
–
CENTER = 900MHz
SPAN = 1MHz
Figure 16. Typical AD8345 GSM Output Spectrum
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8345ARE-REEL | 制造商:Analog Devices 功能描述:Quadrature Mod 80MHz 16-Pin TSSOP EP T/R |
| AD8345ARE-REEL7 | 功能描述:IC QUADRATURE MOD 250MHZ 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) |
| AD8345AREZ | 功能描述:IC QUADRATURE MOD 250MHZ 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) |
| AD8345AREZ | 制造商:Analog Devices 功能描述:IC QUAD MODULATOR 140MHZ-1GHZ 16-TSSO 制造商:Analog Devices 功能描述:IC, QUAD MODULATOR, 140MHZ-1GHZ, 16-TSSO |
| AD8345AREZ-REEL | 制造商:Analog Devices 功能描述:Quadrature Mod 80MHz 16-Pin TSSOP EP T/R |
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