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LMH2100TM PDF预览

LMH2100TM

更新时间: 2024-11-17 04:19:59
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
32页 1965K
描述
50 MHz to 4 GHz 40 dB Logarithmic Power Detector for CDMA and WCDMA

LMH2100TM 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:BGA6,2X3,16Reach Compliance Code:compliant
风险等级:5.18特性阻抗:50 Ω
构造:COMPONENT最大输入功率 (CW):10 dBm
JESD-609代码:e1安装特点:SURFACE MOUNT
功能数量:1端子数量:6
最大工作频率:4000 MHz最小工作频率:50 MHz
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装等效代码:BGA6,2X3,16
电源:2.7 V射频/微波设备类型:LINEAR DETECTOR
子类别:RF/Microwave Amplifiers最大压摆率:9.2 mA
表面贴装:YES端子面层:Tin/Silver/Copper (Sn/Ag/Cu)
Base Number Matches:1

LMH2100TM 数据手册

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November 28, 2007  
LMH2100  
50 MHz to 4 GHz 40 dB Logarithmic Power Detector for  
CDMA and WCDMA  
General Description  
Features  
The LMH2100 is a 40 dB RF power detector intended for use  
in CDMA and WCDMA applications. The device has an RF  
frequency range from 50 MHz to 4 GHz. It provides an accu-  
rate temperature and supply compensated output voltage that  
relates linearly to the RF input power in dBm. The circuit op-  
erates with a single supply from 2.7V to 3.3V.  
40 dB linear in dB power detection range  
Output voltage range 0.3 to 2V  
Shutdown  
Multi-band operation from 50 MHz to 4 GHz  
0.5 dB accurate temperature compensation  
External configurable output filter bandwidth  
The LMH2100 has an RF power detection range from −45  
dBm to −5 dBm and is ideally suited for direct use in combi-  
nation with a 30 dB directional coupler. Additional low-pass  
filtering of the output signal can be realized by means of an  
external resistor and capacitor. Figure (a) shows a detector  
with an additional output low pass filter. The filter frequency  
is set with RS and CS.  
0.4 mm-pitch micro SMD package  
Applications  
UMTS/CDMA/WCDMA RF power control  
GSM/GPRS RF power control  
Figure (b) shows a detector with an additional feedback low  
pass filter. Resistor RP is optional and will lower the Trans  
impedance gain (RTRANS). The filter frequency is set with  
PA modules  
IEEE 802.11b, g (WLAN)  
CP//CTRANS and RP//RTRANS  
.
The device is active for Enable = High, otherwise it is in a low  
power consumption shutdown mode. To save power and pre-  
vent discharge of an external filter capacitance, the output  
(OUT) is high-impedance during shutdown.  
The LMH2100 power detector is offered in the small 0.4 mm  
pitch micro SMD package.  
Typical Application  
30014071  
30014004  
(a) LMH2100 with Output RC Low Pass Filter  
(b) LMH2100 with Feedback (R)C Low Pass Filter  
© 2007 National Semiconductor Corporation  
300140  
www.national.com  

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