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MAX881 PDF预览

MAX881

更新时间: 2024-01-06 18:47:26
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
8页 113K
描述
Low-Noise Bias Supply in レMAX with Power-OK for GaAsFET PA

MAX881 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:SOIC
包装说明:UMAX-10针数:10
Reach Compliance Code:unknown风险等级:5.18
模拟集成电路 - 其他类型:SWITCHED CAPACITOR REGULATOR最大输入电压:5.5 V
最小输入电压:2.5 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-G10JESD-609代码:e0
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
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:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):245座面最大高度:1.1 mm
表面贴装:YES切换器配置:DOUBLER INVERTER
最大切换频率:120 kHz温度等级:INDUSTRIAL
端子面层:TIN LEAD端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

MAX881 数据手册

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19-1372; Rev 1; 6/98  
Lo w -No is e Bia s S u p p ly in µMAX  
w it h P o w e r-OK fo r Ga As FET PA  
MAX81R  
Ge n e ra l De s c rip t io n  
Fe a t u re s  
The MAX881R low-noise, inverting power supply is  
d e s ig ne d for b ia s ing Ga As FET p owe r a mp lifie rs in  
portable wireless applications. This device is a charge-  
pump inverter followed by a negative linear regulator.  
The input voltage range is 2.5V to 5.5V. The output is  
preset at -2.0V or can be set, using two resistors, to any  
Small µMAX Package  
1mVp-p Output Voltage Ripple and Noise  
Power-OK Signal to Control GaAsFET Drain  
Switch  
0.05µA Logic-Controlled Shutdown  
1ms Guaranteed Start-Up  
2.5V to 5.5V Input  
voltage from -0.5V to (-V + 0.6V). It can deliver up to  
IN  
4mA. The internal linear regulator also filters the output  
to 1mVp-p ripple and noise.  
Other features include a power-OK (POK) output that sig-  
nals when the negative voltage is within 7.5% of its set  
point. It protects the GaAsFET by not allowing power to  
be applied to the GaAsFETs drain until it is properly  
biased. The signal can be routed either to a microcon-  
troller or directly to a switch at the GaAsFET drain. The  
MAX881R is available in a space-saving 10-pin µMAX  
package.  
-0.5V to (-V + 0.6V) Output at up to 4mA  
IN  
Operates with One 4.7µF and Three 0.22µF  
Capacitors (no inductors needed)  
Ap p lic a t io n s  
Cell Phones  
Ord e rin g In fo rm a t io n  
PCS Phones  
PHS Phones  
PART  
TEMP. RANGE  
PIN-PACKAGE  
MAX881REUB  
-40°C to +85°C  
10 µMAX  
Wireless Handsets  
Wireless Modems  
Two-Way Pagers  
Mobile Radios  
Wireless Computers  
Typ ic a l Op e ra t in g Circ u it  
P in Co n fig u ra t io n  
TOP VIEW  
OUTPUT  
-2V (OR ADJ)  
4mA, 1mVp-p  
RIPPLE  
INPUT  
2.5V TO 5.5V  
IN  
OUT  
C1+  
C1-  
1
2
3
4
5
10 IN  
MAX881R  
9
8
7
6
N.C.  
GND  
OUT  
FB  
ON  
SHDN  
C1+  
MAX881R  
OFF  
NEGOUT  
POK  
CONTROLS  
GaAsFET PA’s  
DRAIN SWITCH  
POK  
GND  
SHDN  
C1-  
NEGOUT FB  
µMAX  
N.C. = NOT INTERNALLY CONNECTED  
________________________________________________________________ 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 408-737-7600 ext. 3468.  

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Fully Assembled and Tested