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LMV225TLX/NOPB

更新时间： 2024-11-22 02:58:35
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德州仪器 - TI 电信电信集成电路
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30页 947K
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LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA

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LMV225TLX/NOPB 数据手册

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LMV225, LMV226, LMV228  
www.ti.com  
SNWS013L –AUGUST 2003–REVISED MARCH 2013  
LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA  
Check for Samples: LMV225, LMV226, LMV228  
1
FEATURES  
DESCRIPTION  
The LMV225/LMV226/LMV228 are 30 dB RF power  
2
•
•
•
•
30 dB Linear in dB Power Detection Range  
Output Voltage Range 0.2 to 2V  
Logic Low Shutdown  
detectors intended for use in CDMA and WCDMA  
applications. The device has an RF frequency range  
from 450 MHz to 2 GHz. It provides an accurate  
temperature and supply compensated output voltage  
that relates linearly to the RF input power in dBm.  
The circuit operates with a single supply from 2.7V to  
5.5V. The LMV225/LMV226/LMV228 have an  
integrated filter for low-ripple average power detection  
of CDMA signals with 30 dB dynamic range.  
Additional filtering can be applied using a single  
external capacitor.  
Multi-Band Operation from 450 MHz to 2000  
MHz  
•
•
Accurate Temperature Compensation  
Packages:  
–
–
DSBGA Thin 1.0 mm x 1.0 mm x 0.6 mm  
DSBGA Ultra Thin 1.0 mm x 1.0 mm x 0.35  
mm  
The LMV225 has an RF power detection range from  
–30 dBm to 0 dBm and is ideally suited for direct use  
–
WSON 2.2 mm x 2.5 mm x 0.8 mm  
–
(LMV225 and LMV228)  
in  
combination  
with  
resistive  
taps.  
The  
LMV226/LMV228 have a detection range from –15  
dBm to 15 dBm and are intended for use in  
combination with a directional coupler. The LMV226  
is equipped with a buffered output which makes it  
suitable for GSM, EDGE, GPRS and TDMA  
applications.  
APPLICATIONS  
•
•
•
•
CDMA RF Power Control  
WCDMA RF Power Control  
CDMA2000 RF Power Control  
PA Modules  
The device is active for Enable = HI, otherwise it is in  
a low power consumption shutdown mode. During  
shutdown the output will be LOW. The output voltage  
ranges from 0.2V to 2V and can be scaled down to  
meet ADC input range requirements.  
The LMV225/LMV226/LMV228 power detectors are  
offered in the thin 1.0 mm x 1.0 mm x 0.6 mm  
DSBGA package and the ultra thin 1.0 mm x 1.0 mm  
x 0.35 mm DSBGA package. The LMV225 and the  
LMV228 are also offered in the 2.2 mm x 2.5 mm x  
0.8 mm WSON package.  
Typical Application  
ANTENNA  
RF  
PA  
ANTENNA  
RF  
PA  
R
1
V
DD  
1.8 kW  
C
50W  
V
DD  
100 pF  
LMV225  
C
RF /E  
IN  
N
100 pF  
OUT  
LMV226/  
LMV228  
R
2
RF /E  
IN  
N
10 kW  
ENABLE  
OUT  
GND  
ENABLE  
R
2
GND  
10 kW  
Figure 1. LMV225  
Figure 2. LMV226/LMV228  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
1234567...30

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LMV225TLX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LMV225TL/NOPB TI

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 LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA

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 		采用微型 SMD 封装的射频功率检测器，用于 CDMA 和 WCDMA | YZR | 4
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