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MAX4473ESA

更新时间： 2024-11-20 22:36:31
品牌 Logo 应用领域
美信 - MAXIM 模拟IC信号电路放大器功率控制光电二极管GSM
页数 文件大小 规格书
6页 142K
描述
Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications in 8-Pin レMAX

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中文翻译

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MAX4473ESA 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：0.150 INCH, SOIC-8针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.33.00.01Factory Lead Time：1 week
风险等级：5.03模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G8JESD-609代码：e0
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：240认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：6.5 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：6 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：3.9 mm
Base Number Matches：1

MAX4473ESA 数据手册

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19-1448; Rev 0; 3/99  
Lo w -Co s t , Lo w -Vo lt a g e , PA P o w e r Co n t ro l  
Am p lifie r fo r GS M Ap p lic a t io n s in 8 -P in µMAX  
MAX473  
Ge n e ra l De s c rip t io n  
Fe a t u re s  
The MAX4473 PA p owe r c ontrol IC is inte nd e d for  
closed-loop bias control of GSM power amplifiers. The  
device facilitates accurate control of the current deliv-  
ered to the power amplifier (PA) via a control voltage.  
The error amplifier senses the voltage drop across an  
external current-sense resistor placed between the  
supply and the PA. The output of the error amplifier  
adjusts the PA gain until the current is proportional to  
the power control voltage applied to the MAX4473. This  
uniq ue top olog y is us e ful in time -d ivis ion-multip le -  
access (TDMA) systems, such as GSM, where accurate  
transmit burst shaping and power control is required.  
User-selectable current sensing and gain setting resis-  
tors maximize flexibility.  
♦ Optimized for GSM Timing Requirements  
♦ +2.7V to +6.5V Single-Supply Operation  
♦ 1.2mA Supply Current  
♦ ≤1µA Supply Current in Shutdown Mode  
♦ Guaranteed 1.5µs Enable/Disable Times  
♦ Active Output Pull-Down in Shutdown Mode  
♦ Rail-to-Rail Error Amplifier Output  
♦ Rail-to-Rail Power Control Input  
♦ Output Drive Capability—500Ω and 300pF Loads  
♦ +1V to V  
Current Sense Input Common-Mode  
CC  
The MAX4473 operates from a single +2.7V to +6.5V  
supply and typically draws 1.2mA of supply current.  
The error amplifier has a common-mode range that  
Voltage Range  
♦ No Phase-Reversal for Common-Mode Voltage  
extends from +1V to V . The power control input and  
CC  
from 0 to V  
CC  
error amplifier outputs swing Rail-to-Rail®. A low-power  
shutdown mode reduces supply current to less than  
1µA and activates an on-board active pull-down at the  
error amplifier output. Fast enable/disable times of  
0.9µs reduce average power consumption without com-  
p romis ing d yna mic p e rforma nc e . The MAX4473 is  
available in a space-saving 8-pin µMAX package.  
♦ External Current Sensing and Gain Setting  
Resistors Maximize Flexibility  
♦ Available in a Space-Saving 8-pin µMAX  
Ord e rin g In fo rm a t io n  
Ap p lic a t io n s  
GSM Cellular Phones  
PART  
TEMP. RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 µMAX  
MAX4473EUA  
MAX4473ESA  
Cordless Phones  
8 SO  
Precision Current Control  
Pin Configuration appears at end of data sheet.  
High-Frequency Servo Loops  
Typ ic a l Op e ra t in g Circ u it  
V
CC  
R
SENSE  
0.1µF  
RG1  
RG2  
A3  
8
1
SR1  
2
SR2  
V
CC  
4
PC  
7
OUT  
I
CCPA  
A1  
BUFFER  
GC  
IN  
V-TO-I  
CONVERTER  
3R  
R
ERROR  
AMPLIFIER  
V
CC  
PA  
Q1  
A2  
MAX4473  
3
SHDN  
GND  
5
SR3  
RFIN  
V
· RG1  
PC  
6
I
=
CCPA  
4 · RG3 · R  
RG3  
SENSE  
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  
123456

中文翻译

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