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參數資料
| 型號： | AD8345 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 250 MHz.1000 MHz Quadrature Modulator |
| 中文描述： | 250 MHz.1000兆赫正交調制器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 372K |
| 代理商： | AD8345 |
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD8345
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2001
250 MHz–1000 MHz
Quadrature Modulator
FUNCTIONAL BLOCK DIAGRAM
16
QBBP
QBBN
15
COM3
14
COM3
13
VPS2
12
VOUT
11
COM2
10
COM3
9
1
IBBP
2
IBBN
3
COM3
4
COM1
5
LOIN
6
LOIP
7
VPS1
8
ENBL
BIAS
+
PHASE
SPLITTER
AD8345
FEATURES
250 MHz–1000 MHz Operating Frequency
+2.5 dBm P1 dB @ 800 MHz
–155 dBm/Hz Noise Floor
0.5 Degree RMS Phase Error (IS95)
0.2 dB Amplitude Balance
Single 2.7 V–5.5 V Supply
Pin-Compatible with AD8346
16-Lead Exposed Paddle TSSOP Package
APPLICATIONS
Cellular Communication Systems
W-CDMA/CDMA/GSM/PCS/ISM Transceivers
Fixed Broadband Access Systems LMDS/MMDS
Wireless LAN
Wireless Local Loop
Digital TV/CATV Modulators
Single Sideband Upconverter
PRODUCT DESCRIPTION
The AD8345 is a silicon RFIC quadrature modulator, designed
for use from 250 MHz to 1000 MHz. Its excellent phase accu-
racy and amplitude balance enable the high performance direct
modulation of an IF carrier.
The AD8345 accurately splits the external LO signal into two
quadrature components through the polyphase phase-splitter
network. The two I and Q LO components are mixed with the
baseband I and Q differential input signals. Finally, the outputs
of the two mixers are combined in the output stage to provide a
single-ended 50
drive at VOUT.
APPLICATIONS
The AD8345 Modulator can be used as the IF transmit modu-
lator in digital communication systems such as GSM and PCS
transceivers. It can also directly modulate an LO signal to
produce QPSK and various QAM formats for 900 MHz com-
munication systems as well as digital TV and CATV systems.
Additionally, this quadrature modulator can be used with direct
digital synthesizers in hybrid phase-locked loops to generate
signals over a wide frequency range with millihertz resolution.
The AD8345 Modulator is supplied in a 16-lead TSSOP pack-
age with exposed paddle. Its performance is specified over a
–40
°
C to +85
°
C temperature range. This device is fabricated on
Analog Devices’ advanced silicon bipolar process.
相關PDF資料 |
PDF描述 |
|---|---|
| AD8345-EVAL | 250 MHz.1000 MHz Quadrature Modulator |
| AD8345ARE | 250 MHz.1000 MHz Quadrature Modulator |
| AD8346ARU-REEL | 0.8 GHz-2.5 GHz Quadrature Modulator |
| AD8346 | 0.8 GHz-2.5 GHz Quadrature Modulator |
| AD8346-EVAL | 0.8 GHz-2.5 GHz Quadrature Modulator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8345ARE | 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) |
| 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 |
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