LM4040
Precision micropower shunt voltage references
Description
The LM4040 is a family of bandgap circuits
designed to achieve precision micro-power
voltage references of 2.5V and 5.0V. The
devices are available in 0.5% C-grade and 1%
D-grade initial tolerances.
They are available in small outline SOT23
surface mount package which is ideal for
applications where space saving is important.
Excellent performance is maintained over the
60µA to 15mA 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 LM4040 voltage reference.
Features
•
•
•
Small packages: SOT23
No output capacitor required
Output voltage tolerance
•
•
•
•
•
•
LM4040C
LM4040D
±0.5% at 25°C
±1% at 25°C
Applications
•
•
•
•
•
•
Battery powered equipment
Precision power supplies
Portable instrumentation
Portable communications devices
Notebook and palmtop computers
Data acquisition systems
Low output noise
(10Hz to 10kHz) .............. 45 V
RMS
Wide operating current range 60 A to 15mA
Extended temperature range -40°C to +125°C
Low temperature coefficient 100 ppm/°C (max)
Pinout information
LM4040_F (SOT23)
Cathode
1
3
*
Anode
2
Top view
* Pin 3 must be left floating or connected to pin 2
Ordering information
25°C Voltage
Tol.
(V)
0.5%
1%
2.5
5.0
2.5
5.0
Order code
LM4040C25FTA
LM4040C50FTA
LM4040D25FTA
LM4040D50FTA
Pack
SOT23
SOT23
SOT23
SOT23
Part
mark
R2C
R5C
R2D
R5D
Status
Preview
Preview
Preview
Preview
Reel size
7”, 180mm
7”, 180mm
7”, 180mm
7”, 180mm
Tape QuantIty
width per reel
8mm
8mm
8mm
8mm
3000
3000
3000
3000
© Zetex Semiconductors plc 2007
ZETEX [ ZETEX SEMICONDUCTORS ]
