LM4041 Datasheet, PDF (1/19 Pages) National Semiconductor (TI) – Precision Micropower Shunt Voltage Reference

January 2001
LM4041
Precision Micropower Shunt Voltage Reference
General Description
Ideal for space critical applications, the LM4041 precision
voltage reference is available in the sub-miniature SC70 and
SOT-23 surface-mount packages. The LM4041’s advanced
design eliminates the need for an external stabilizing capaci-
tor while ensuring stability with any capacitive load, thus
making the LM4041 easy to use. Further reducing design
effort is the availability of a fixed (1.225V) and adjustable
reverse breakdown voltage. The minimum operating current
is 60 µA for the LM4041-1.2 and the LM4041-ADJ. Both
versions have a maximum operating current of 12 mA.
The LM4041 utilizes fuse and zener-zap reverse breakdown
or reference voltage trim during wafer sort to ensure that the
prime parts have an accuracy of better than ±0.1%
(A grade) at 25˚C. Bandgap reference temperature drift cur-
vature correction and low dynamic impedance ensure stable
reverse breakdown voltage accuracy over a wide range of
operating temperatures and currents.
Features
n Small packages: SOT-23, TO-92, and SC70
n No output capacitor required
n Tolerates capacitive loads
n Reverse breakdown voltage options of 1.225V and
adjustable
Key Specifications (LM4041-1.2)
j Output voltage tolerance
(A grade, 25˚C)
j Low output noise
(10 Hz to 10kHz)
j Wide operating current range
j Industrial temperature range
j Extended temperature range
j Low temperature coefficient
±0.1%(max)
20µV_rms
60µA to 12mA
−40˚C to +85˚C
−40˚C to +125˚C
100 ppm/˚C (max)
Applications
n Portable, Battery-Powered Equipment
n Data Acquisition Systems
n Instrumentation
n Process Control
n Energy Management
n Automotive
n Precision Audio Components
Connection Diagrams
SOT-23
SC-70
DS011392-1
*This pin must be left floating or connected to pin 2.
DS011392-40
Top View
See NS Package Number MF03A
(JEDEC Registration TO-236AB)
DS011392-46
*This pin must be left floating or connected to pin 1.
DS011392-47
Top View
See NS Package Number MAA05A
© 2001 National Semiconductor Corporation DS011392
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