LM4040-N, LM4040Q-N
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SNOS633G –MAY 2004–REVISED JULY 2012
LM4040-N/LM4040Q-N Precision Micropower Shunt Voltage Reference
Check for Samples: LM4040-N, LM4040Q-N
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FEATURES
APPLICATIONS
2
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2.5V/SOT-23 AEC Q-100 Grades 1 and 3
available
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Portable, Battery-Powered Equipment
Data Acquisition Systems
Instrumentation
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Small packages: SOT-23, TO-92 and SC70
No output capacitor required
Tolerates capacitive loads
Process Control
Energy Management
Product Testing
Fixed reverse breakdown voltages of 2.048V,
2.500V,3.000V, 4.096V, 5.000V, 8.192V, and
10.000V
Automotive
Precision Audio Components
DESCRIPTION
Ideal for space critical applications, the LM4040 precision voltage reference is available in the sub-miniature
SC70 and SOT-23 surface-mount package. The LM4040's advanced design eliminates the need for an external
stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4040 easy to use.
Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048V, 2.500V,
3.000V, 4.096V, 5.000V, 8.192V, and 10.000V. The minimum operating current increases from 60 μA for the
LM4040-2.5 to 100 μA for the LM4040-10.0. All versions have a maximum operating current of 15 mA.
The LM4040 utilizes fuse and zener-zap reverse breakdown 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
curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide
range of operating temperatures and currents.
Also available is the LM4041 with two reverse breakdown voltage versions: adjustable and 1.2V. Please see the
LM4041 data sheet.
Table 1. Key Specifications (LM4040-2.5)
VALUE
UNIT
■ Output voltage tolerance
±0.1% (max)
(A grade, 25°C)
■ Low output noise
(10 Hz to 10 kHz)
35 μVrms(typ)
■ Wide operating current range
■ Industrial temperature range
60 μA to 15 mA
−40°C to +85°C
−40°C to
+125°C
■ Extended temperature range
■ Low temperature coefficient
100 ppm/°C
(max)
Connection Diagrams
*This pin must be left floating or connected to pin 2.
Figure 1. SOT-23 NS Package (Top View)
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2012, Texas Instruments Incorporated