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MAX9928FAUA PDF预览

MAX9928FAUA

更新时间: 2024-11-14 07:16:11
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
14页 257K
描述
-0.1V to +28V Input Range, Micropower Uni-/Bidirectional, Current-Sense Amplifiers

MAX9928FAUA 数据手册

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19-4251; Rev 3; 4/12  
-0.1V to +28V Input Range, Micropower,  
Uni-/Bidirectional, Current-Sense Amplifiers  
8/MAX29  
General Description  
Features  
The MAX9928/MAX9929 low-cost, uni-/bidirectional,  
high-side, current-sense amplifiers are ideal for moni-  
toring battery charge and discharge currents in note-  
books, cell phones, and other portable equipment.  
These devices feature a wide -0.1V to +28V input com-  
mon-mode voltage range, low 20µA supply current with  
o Wide -0.1V to +28V Common-Mode Range,  
Independent of Supply Voltage  
o 2.5V to 5.5V Operating Supply Voltage  
o 20µA Quiescent Supply Current  
o 0.4mV (max) Input Offset Voltage  
o Gain Accuracy Better than 1% (max)  
o SIGN Output Indicates Current Polarity  
V
less than 0.4mV, and a gain accuracy better than  
OS  
1.0%. The input common-mode range is independent  
of the supply voltage, ensuring that the current-sense  
information remains accurate even when the measure-  
ment rail is shorted to ground.  
o Transconductance and Gain Versions Available  
5µA/mV (MAX9928F)  
The MAX9928F features a current output with a transcon-  
ductance ratio of 5µA/mV. An external resistor converts  
the output current to a voltage, allowing adjustable gain  
so that the input sense voltage can be matched to the  
maximum ADC input swing. The MAX9929F has a voltage  
output and integrates a 10koutput resistor for a fixed  
voltage gain of 50V/V.  
50V/V (MAX9929F)  
o Pin Compatible with the MAX4372 in UCSP  
o Available in Ultra-Small, 3x2 UCSP  
(1mm x 1.5mm) and 8-Pin µMAX Packages  
A digital SIGN output indicates direction of current flow,  
so the user can utilize the full ADC input range for mea-  
suring both charging and discharging currents.  
Applications  
Monitoring Charge/Discharge Currents in  
Portable/Battery-Powered Systems  
The MAX9928/MAX9929 are fully specified over the -40°C  
to +125°C automotive temperature range, and available  
in 6-bump UCSP™ (1mm x 1.5mm) and 8-pin µMAX®  
packages. The UCSP package is bump-to-bump com-  
patible with the MAX4372_EBT.  
Notebook Computers  
General-System/Board-Level Current Monitoring  
Smart-Battery Packs/Chargers  
Precision Current Sources  
UCSP is a trademark and µMAX is a registered trademark of  
Maxim Integrated Products, Inc.  
Smart Cell Phones  
Super Capacitor Charge/Discharge  
Pin Configurations and Typical Operating Circuit appear at  
end of data sheet.  
Ordering Information  
PART  
OUTPUT TYPE  
Current  
GAIN  
PIN-PACKAGE  
8 µMAX  
TOP MARK  
MAX9928FAUA+  
MAX9928FABT+T  
MAX9929FAUA+  
MAX9929FABT+T  
G
G
= 5µA/mV  
= 5µA/mV  
m
m
Current  
3x2 UCSP  
8 µMAX  
+AAF  
Voltage  
A = 50V/V  
V
Voltage  
A = 50V/V  
3x2 UCSP  
+ADI  
V
Note: All devices are specified over the -40°C to +125°C operating temperature range.  
+Denotes a lead-free/RoHS-compliant package.  
T = Tape and reel.  
________________________________________________________________ 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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