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參數(shù)資料
| 型號： | LMV228 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | RF Power Detector for CDMA and WCDMA |
| 中文描述： | RF功率檢測器的CDMA和WCDMA |
| 文件頁數(shù)： | 1/21頁 |
| 文件大小： | 1090K |
| 代理商： | LMV228 |
LMV225/LMV226/LMV228
RF Power Detector for CDMA and WCDMA
General Description
The LMV225/LMV226/LMV228 are 30 dB RF power detec-
tors 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 com-
pensated 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 inte-
grated 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.
The LMV225 has an RF power detection range from –30
dBm to 0 dBm and is ideally suited for direct use in combi-
nation with resistive taps. The LMV226/LMV228 have a de-
tection 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.
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 re-
quirements.
The LMV225/LMV226/LMV228 power detectors are offered
in the small 1.0 mm x 1.0 mm X 0.6 mm micro SMD pack-
age. The LMV225 and the LMV228 are also offered in the
2.2 mm x 2.5 mm x 0.8 mm LLP package.
Features
n
30 dB linear in dB power detection range
n
Output voltage range 0.2 to 2V
n
Logic low shutdown
n
Multi-band operation from 450 MHz to 2000 MHz
n
Accurate temperature compensation
n
Packages:
— micro SMD package 1.0 mm x 1.0 mm x 0.6 mm
— LLP package 2.2 mm x 2.5 mm x 0.8 mm (LMV225
and LMV228)
Applications
n
CDMA RF power control
n
WCDMA RF power control
n
CDMA2000 RF power control
n
PA modules
Typical Application
LMV225
20076001
LMV226/LMV228
20076046
March 2005
L
2005 National Semiconductor Corporation
DS200760
www.national.com
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| LMV228SD | RF Power Detector for CDMA and WCDMA |
| LMV228SDX | RF Power Detector for CDMA and WCDMA |
| LMV228TL | RF Power Detector for CDMA and WCDMA |
| LMV243BL | Single-Channel, Quad-Band GSM Power Controller in micro SMD |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMV228SD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:RF Power Detector for CDMA and WCDMA |
| LMV228SD/NOPB | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| LMV228SDEVAL | 功能描述:BOARD EVALUATION FOR LMV228SD RoHS:否 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標準包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796 |
| LMV228SDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:RF Power Detector for CDMA and WCDMA |
| LMV228SDX/NOPB | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
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