LM4041 Datasheet, PDF (1/7 Pages) National Semiconductor (TI) – Precision Micropower Shunt Voltage Reference

LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
Description
The LM4041 is a bandgap circuit designed to achieve a
precision micro-power voltage reference of 1.225 V. The
device is available in the small outline SOT23 and SC70-5
surface mount packages which are ideal for applications
where space saving is important.
Both packages are available to 0.5% C grade and 1%
D grade for precision applications. Excellent performance is
maintained over the 60µA to 12mA operating current range
with a typical temperature coefficient of only 20ppm/°C. The
device has been designed to be highly tolerant of capacitive
loads so maintaining excellent stability.
This device offers a pin for pin compatible alternative to the
LM4041 voltage reference in both adjustable and 1.225V
output variants.
Features
• Small packages:
SOT23, SC70-5
• No output capacitor required
• Output voltage tolerance
• LM4041C
±0.5% at 25°C
• LM4041D
±1% at 25°C
• Low output noise
20µVrms
(10Hz to 10kHz)
• Wide operating current range 60µA to 12mA
• Extended temperature range -40°C to +125°C
• Low temperature coefficient 100ppm/°C (max)
Applications
• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Portable communications devices
• Notebook and palmtop computers
• Data acquisition systems
Pin Assignments
LM4041_F (SOT23)
CATHODE 1
3 N/C
ANODE 2
Pin 3 must left floating or connected to pin 2.
LM4041_ADJF….(SOT23)
REF 1
3 ANODE
CATHODE 2
LM4041_H5 (SC70-5)
ANODE 1
5 N/C
N/C 2
CATHODE 3
4 N/C
Pin 2 must be left floating or connected to pin 1
LM4041_ADJH5 (SC70-5)
N/C 1
ANODE 2
5 REF
CATHODE 3
4 N/C
LM4041
Document number: DS32020 Rev. 7 - 2
1 of 7
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December 2010
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