The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of applications. The 2-pin fixed-output device requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications.
Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 µA (typ), the LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LM4040 Precision Micropower Shunt Voltage Reference datasheet (Rev. N) | 09 Oct 2017 |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 07 May 2021 | |
| White paper | Simplifying Signal Chain Design for High Performance in Small Systems | 22 Oct 2020 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | |
| Technical article | How to use a voltage reference as a voltage regulator | 04 Dec 2018 | |
| White paper | Voltage reference selection basics white paper (Rev. A) | 23 Oct 2018 | |
| Application note | Using Voltage Supervisors in High Voltage Applications | 09 Oct 2018 | |
| Technical article | Can I get that shunt reference to go, please? | 29 Feb 2016 | |
| Technical article | Understanding Voltage References: Ultra-low dropout - not just for the series reference | 01 May 2015 | |
| Technical article | Understanding Voltage References: Shunt vs series. Which topology is right for you? | 29 Apr 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
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Use our reference design selection tool to review and identify designs that best match your application and parameters.
| Package | Pins | Download |
|---|---|---|
| SC70 (DCK) | 5 | View options |
| SOT-23 (DBZ) | 3 | View options |
| TO-92 (LP) | 3 | View options |
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