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EVAL-ADG902EB

更新时间： 2024-11-28 12:27:23
品牌 Logo 应用领域
亚德诺 - ADI 开关
页数 文件大小 规格书
16页 737K
描述
Wideband, 40 dB Isolation at 1 GHz, CMOS 1.65 V to 2.75 V, SPST Switches

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EVAL-ADG902EB 数据手册

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Wideband, 40 dB Isolation at 1 GHz, CMOS  
1.65 V to 2.75 V, SPST Switches  
ADG901/ADG902  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Wideband switch: −3 dB @ 4.5 GHz  
ADG901—absorptive switch  
ADG901  
RF1  
RF2  
ADG902—reflective switch  
High off isolation: 40 dB @ 1 GHz  
Low insertion loss: 0.8 dB @1 GHz  
Single 1.65 V to 2.75 V power supply  
CMOS/LVTTL control logic  
8-lead MSOP and tiny 3 mm × 3 mm LFCSP packages  
Low power consumption (<1 μA)  
50Ω  
50Ω  
CTRL  
RF1  
ADG902  
RF2  
APPLICATIONS  
Wireless communications  
General purpose RF switching  
Dual-band applications  
High speed filter selection  
Digital transceiver front end switch  
IF switching  
CTRL  
Figure 1.  
Tuner modules  
Antenna diversity switching list  
GENERAL DESCRIPTION  
The ADG901/ADG902 are wideband switches that use a CMOS  
process to provide high isolation and low insertion loss to  
1 GHz. The ADG901 is an absorptive (matched) switch with  
50 Ω terminated shunt legs, while the ADG902 is a reflective  
switch. These devices are designed such that the isolation is  
high over the dc to 1 GHz frequency range. They have on-board  
CMOS control logic, thus eliminating the need for external  
controlling circuitry. The control inputs are both CMOS and  
0
LVTTL compatible. The low power consumption of these  
CMOS devices makes them ideally suited to wireless  
applications and general-purpose high frequency switching.  
PRODUCT HIGHLIGHTS  
1. −40 dB Off Isolation @ 1 GHz  
2. 0.8 dB Insertion Loss @ 1 GHz  
3. Tiny 8-Lead MSOP/LFCSP Packages  
–0.4  
–0.6  
–0.8  
–1.0  
–1.2  
–1.4  
–1.6  
–1.8  
–2.0  
–2.2  
–2.4  
–2.6  
–2.8  
T
= 25°C  
A
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
V
= 2.5V  
DD  
V
= 2.5V  
= 25°C  
DD  
V
= 1.8V  
–3.0  
–3.0  
10k  
DD  
T
A
100k  
1M  
10M  
100M  
1G  
10G  
10k  
100k  
1M  
10M  
100M  
1G  
10G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 3. Insertion Loss vs. Frequency  
Figure 2. Off Isolation vs. Frequency  
Rev. B  
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. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  
 
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