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參數(shù)資料
| 型號： | AD8345AREZ1 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 調(diào)制器/解調(diào)器 |
| 英文描述： | 140 MHz - 1000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR |
| 封裝： | LEAD FREE, MO-153ABT, TSSOP-16 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大小： | 1013K |
| 代理商： | AD8345AREZ1 |
AD8345
Rev. B | Page 18 of 20
MODULATED WAVEFORM SETUP
To evaluate the AD8345 with modulated waveforms, the setup
shown in Figure 38 is used. A Rohde & Schwarz AMIQ signal
generator with differential outputs is used to generate the
baseband signals. For all measurements, the input level on each
baseband input pin is 0.7 V ±0.3 V peak. The output is
measured with a Rohde & Schwarz FSIQ spectrum/vector
analyzer.
+15V MAX
COM
+25V MAX
–25V MAX
HP3631
IEEE
AD8345
CHARACTERIZATION
BOARD
P1
IN
IP
QP
QN
VOUT
LO
ENBL
RFOUT
IEEE
HP8648C
IEEE
PC CONTROLLER
SPECTRUM
ANALYZER
RF I/P
IEEE
FSIQ
PC CONTROL
AMIQ
IN
IP
QP
QN
009
32-
0
38
Figure 38. Test Setup for Evaluating AD8345 with Modulated Waveforms
CDMA IS95
To measure ACPR, the I and Q input signals used are generated
with Pilot channel (Walsh Code 00), Sync channel (WC 32), Paging
channel (WC 01), and six Traffic (WC 08, 09, 10, 11, 12, 13)
channels active. Figure 39 shows the typical output spectrum for
this configuration.
To perform EVM, Rho, phase, and amplitude balance
measurements, the I and Q input signals used are generated
with only the Pilot channel (Walsh Code 00) active.
CENTER = 880MHz
SPAN = 7.5MHz
AM
P
L
IT
UD
E
(
d
Bm
)
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
00932-
039
CH PWR = –12.41dBm
ACP UP = –72.9dB
ACP LOW = –72.9dB
Figure 39. Typical IS95 Output Spectrum
WCDMA 3GPP
To evaluate the AD8345 for WCDMA, the 3GPP standard is
used with a chip rate of 3.84 MHz. The plot in Figure 40 is an
ACPR plot of the AD8345 using Test Model 1 from the 3GPP
specification with 64 channels active.
CENTER = 380MHz
SPAN = 14.7MHz
AM
P
L
IT
UD
E
(
d
Bm
)
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
00932-
040
CH PWR = –10.95dBm
ACP UP = –52.51dB
ACP LOW = –52.41dB
Figure 40. Typical AD8345 WCDMA 3GPP Output Spectrum
GSM
To compare the AD8345 output to the GSM transmit mask, I
and Q signals are generated using MSK modulation, GSM
differential coding, a Gaussian filter, and a symbol rate of
270.833 kHz. The transmit mask is manually generated on the
FSIQ using the GSM BTS specification for reference. The plot in
Figure 41 shows that the AD8345 meets the GSM transmit
mask requirements.
CENTER = 900MHz
SPAN = 1MHz
AM
P
L
IT
UD
E
(
d
Bm
)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
00932-
041
Figure 41. Typical AD8345 GSM Output Spectrum
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PDF描述 |
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| AD8345AREZ-RL7 | 140 MHz - 1000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR |
| AD8345AREZ-REEL7 | 140 MHz - 1000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR |
| AD8346ARUZ-REEL | 800 MHz - 2500 MHz RF/MICROWAVE I/Q MODULATOR |
| AD8346ARUZ-REEL7 | 800 MHz - 2500 MHz RF/MICROWAVE I/Q MODULATOR |
| AD8347ARUZ | 800 MHz - 2700 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8345AREZ-REEL | 制造商:Analog Devices 功能描述:Quadrature Mod 80MHz 16-Pin TSSOP EP T/R |
| AD8345AREZ-RL7 | 功能描述:IC MOD QUAD 300-1000MHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調(diào)制器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調(diào)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) |
| AD8345-EVAL | 制造商:Analog Devices 功能描述:AD8345 EVALUATION BOARD - Bulk |
| AD8345-EVALZ | 制造商:Analog Devices 功能描述:EVAL KIT FOR 140 MHZ TO 1000 MHZ QUADRATURE MODULATOR - Bulk |
| AD8346 | 制造商:AD 制造商全稱:Analog Devices 功能描述:300 MHz to 1000 MHz Quadrature Modulator |
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