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LM4040-N/LM4040Q-N
Precision Micropower Shunt Voltage Reference
General 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 capaci-
tor while ensuring stability with any capacitive load, thus
making the LM4040 easy to use. Further reducing design ef-
fort 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.
Features
●
2.5V/SOT-23 AEC Q-100 Grades 1 and 3 available
●
Small packages: SOT-23, TO-92 and SC70
●
No output capacitor required
●
Tolerates capacitive loads
●
Fixed reverse breakdown voltages of 2.048V, 2.500V,
3.000V, 4.096V, 5.000V, 8.192V, and 10.000V
Key Specifications (LM4040-2.5)
■ Output voltage tolerance
(A grade, 25°C) ±0.1% (max)
■ Low output noise
(10 Hz to 10 kHz)
35 μV
rms
(typ)
■ Wide operating current range
60 μA to 15 mA
■ Industrial temperature range
−40°C to +85°C
■ Extended temperature range
−40°C to +125°C
■ Low temperature coefficient
100 ppm/°C (max)
Applications
●
Portable, Battery-Powered Equipment
●
Data Acquisition Systems
●
Instrumentation
●
Process Control
●
Energy Management
●
Product Testing
●
Automotive
●
Precision Audio Components
Connection Diagrams
SOT-23
1132301
*This pin must be left floating or connected to pin 2.
Top View
See NS Package Number MF03A
(JEDEC Registration TO-236AB)
TO-92
1132303
Bottom View
See NS Package Number Z03A
SC70
1132330
*This pin must be left floating or connected to pin 1.
Top View
See NS Package Number MAA05A
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.
11323 SNOS633G Copyright © 1999-2012, Texas Instruments Incorporated
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