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MAX9938_11

更新时间： 2024-11-14 11:14:07
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
14页 519K
描述
1uA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier

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19-4110; Rev 6; 1/11  
1µA, 4-Bump UCSP/SOT23,  
Precision Current-Sense Amplifier  
MAX938  
General Description  
Features  
The MAX9938 high-side current-sense amplifier offers  
o Ultra-Low Supply Current of 1µA (max)  
precision accuracy specifications of V  
less than  
OS  
o Low 500µV (max) Input Offset Voltage  
o Low < 0.5% (max) Gain Error  
o Input Common Mode: +1.6V to +28V  
o Voltage Output  
500μV (max) and gain error less than 0.5% (max).  
Quiescent supply current is an ultra-low 1μA. The  
MAX9938 fits in a tiny, 1mm x 1mm UCSP™ package  
size or a 5-pin SOT23 package, making the part ideal for  
applications in notebook computers, cell phones, PDAs,  
and all battery-operated portable devices where accura-  
cy, low quiescent current, and small size are critical.  
o Four Gain Versions Available  
25V/V (MAX9938T)  
50V/V (MAX9938F)  
100V/V (MAX9938H)  
200V/V (MAX9938W)  
The MAX9938 features an input common-mode voltage  
range from 1.6V to 28V. These current-sense amplifiers  
have a voltage output and are offered in four gain versions:  
25V/V (MAX9938T), 50V/V (MAX9938F), 100V/V  
(MAX9938H), and 200V/V (MAX9938W).  
o Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP,  
5-Pin SOT23, or 2mm x 2mm x 0.8mm, 6-Pin  
µDFN Packages  
The four gain selections offer flexibility in the choice of  
the external current-sense resistor. The very low 500μV  
(max) input offset voltage allows small 25mV to 50mV  
voltage for very low voltage drop at  
full-current measurement.  
Ordering Information  
PIN-  
PACKAGE  
GAIN  
(V/V)  
TOP  
MARK  
full-scale V  
SENSE  
PART  
MAX9938TEBS+G45  
MAX9938FEBS+G45  
MAX9938HEBS+G45  
MAX9938WEBS+G45  
MAX9938TEUK+  
4 UCSP  
4 UCSP  
4 UCSP  
4 UCSP  
5 SOT23  
5 SOT23  
5 SOT23  
5 SOT23  
6 μDFN  
25  
50  
+AGD  
+AGE  
+AGF  
The MAX9938 is offered in tiny 4-bump, UCSP (1mm x  
1mm x 0.6mm footprint), 5-pin SOT23, and 6-pin μDFN  
(2mm x 2mm x 0.8mm) packages specified for operation  
over the -40°C to +85°C extended temperature range.  
100  
200  
25  
+AGI  
+AFFB  
+AFFC  
+AFFD  
+AFGZ  
+ACM  
Applications  
MAX9938FEUK+  
50  
Cell Phones  
MAX9938HEUK+  
MAX9938WEUK+  
MAX9938FELT+  
100  
200  
50  
PDAs  
Power Management Systems  
Portable/Battery-Powered Systems  
Notebook Computers  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
G45 indicates protective die coating.  
Note: All devices are specified over the -40°C to +85°C  
extended temperature range.  
UCSP is a trademark of Maxim Integrated Products, Inc.  
Pin Configurations  
TOP VIEW  
(BUMPS ON BOTTOM)  
TOP VIEW  
(PADS ON BOTTOM)  
RS+  
5
RS-  
4
RS+  
A1  
A2  
RS-  
RS-  
6
1
OUT  
N.C.  
GND  
MAX9938T/F/H/W  
MAX9938T/F/H/W  
5
4
N.C.  
RS+  
2
3
MAX9938FELT  
GND  
B1  
B2  
OUT  
1
2
3
UCSP  
GND  
GND  
OUT  
μDFN  
SOT23  
DRAWINGS NOT TO SCALE  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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