Texas Instruments LM4040 Precision Micropower Shunt Voltage Reference Datasheet

The LM4040 series is a versatile and easy-to-use shunt voltage reference that caters to a vast array of applications. This product requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low output fluctuations.


Texas Instruments LM4040 Precision Micropower Shunt Voltage Reference Datasheet - cover page
Brand
Texas Instruments
Document type
Datasheet
Language
English
Pages
39
File format
PDF
File size
463 KB
Published
05 July, 2012
Updated
29 September, 2023
Model
LM4040
MD5 checksum
800B225635CA0D150FFDF832D273B06C

About this manual

The LM4040 series consists of versatile, easy-to-use fixed-output shunt voltage references available in 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, and 10 V options. These devices offer tight output tolerances ranging from a maximum of 0.1% for A grade to 1.0% for D grade, with low temperature coefficients up to 150 ppm/°C depending on the grade.

Packaged in space-saving SOT-23 (DBZ), SC-70 (DCK), and TO-92/TO-226 (LP) formats, the LM4040 requires a minimum current of only 45 pA typical. The device is stable with all capacitive loads without requiring an external output capacitor, making it ideal for battery-powered equipment, data-acquisition systems, and instrumentation applications.

What's inside

  • Features
  • Applications
  • Ordering Information
  • Functional Block Diagram
  • Absolute Maximum Ratings
  • Recommended Operating Conditions

Specifications

Fixed Output Voltages2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, and 10 V
Max Output Tolerance (A Grade)0.1%
Operating Temperature Range (Extended)-40°C to 125°C

Frequently asked questions

What is the minimum operating current for the LM4040?

The device requires a minimum current of 45 pA to operate.

What is the maximum continuous cathode current?

The maximum continuous cathode current is 25 mA.

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