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LM4040A25IDBZT

更新时间： 2024-11-15 05:42:19
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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

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LM4040  
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE  
www.ti.com  
SLOS456J–JANUARY 2005–REVISED SEPTEMBER 2006  
FEATURES  
DBZ (SOT-23) PACKAGE  
•
Fixed Output Voltages of 2.048 V, 2.5 V, 3 V,  
(TOP VIEW)  
4.096 V, 5 V, 8.192 V, and 10 V  
1
•
Tight Output Tolerances and Low  
Temperature Coefficient  
CATHODE  
ANODE  
3*  
2
– Max 0.1%, 100 ppm/°C – A Grade  
– Max 0.2%, 100 ppm/°C – B Grade  
– Max 0.5%, 100 ppm/°C – C Grade  
– Max 1.0%, 150 ppm/°C – D Grade  
Low Output Noise…35 µVRMS Typ  
* Pin 3 is attached to substrate and must be  
connected to ANODE or left open.  
DCK (SC-70) PACKAGE  
(TOP VIEW)  
•
•
Wide Operating Current Range…45 µA Typ to  
15 mA  
1
5
4
ANODE  
NC  
NC  
NC  
•
•
Stable With All Capacitive Loads; No Output  
Capacitor Required  
2
3
CATHODE  
Available in Extended Temperature  
Range…–40°C to 125°C  
NC – No internal connection  
APPLICATIONS  
LP (TO-92/TO-226) PACKAGE  
(TOP VIEW)  
•
•
•
•
•
•
•
•
Data-Acquisition Systems  
Power Supplies and Power-Supply Monitors  
Instrumentation and Test Equipment  
Process Controls  
Precision Audio  
Automotive Electronics  
ANODE  
CATHODE  
NC  
Energy Management  
Battery-Powered Equipment  
NC – No internal connection  
DESCRIPTION/ORDERING INFORMATION  
The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of  
applications. The 2-pin fixed-output device requires no external capacitors for operation and is stable with all  
capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature  
coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The  
LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage  
tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility  
is offered to designers in choosing the best cost-to-performance ratio for their applications.  
Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 µA (typ), the  
LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient  
temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature  
range of –40°C to 125°C.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005–2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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