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AD8345ARE PDF预览

AD8345ARE

更新时间: 2024-11-17 22:50:03
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 369K
描述
250 MHz.1000 MHz Quadrature Modulator

AD8345ARE 数据手册

 浏览型号AD8345ARE的Datasheet PDF文件第2页浏览型号AD8345ARE的Datasheet PDF文件第3页浏览型号AD8345ARE的Datasheet PDF文件第4页浏览型号AD8345ARE的Datasheet PDF文件第5页浏览型号AD8345ARE的Datasheet PDF文件第6页浏览型号AD8345ARE的Datasheet PDF文件第7页 
250 MHz–1000 MHz  
Quadrature Modulator  
a
AD8345  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
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  
AD8345  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
QBBP  
QBBN  
COM3  
COM3  
VPS2  
IBBP  
IBBN  
COM3  
COM1  
LOIN  
+
APPLICATIONS  
PHASE  
SPLITTER  
VOUT  
COM2  
COM3  
Cellular Communication Systems  
W-CDMA/CDMA/GSM/PCS/ISM Transceivers  
Fixed Broadband Access Systems LMDS/MMDS  
Wireless LAN  
LOIP  
VPS1  
ENBL  
BIAS  
Wireless Local Loop  
Digital TV/CATV Modulators  
Single Sideband Upconverter  
PRODUCT DESCRIPTION  
APPLICATIONS  
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 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.  
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.  
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.  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
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  

AD8345ARE 替代型号

型号 品牌 替代类型 描述 数据表
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