Micropower Voltage Reference Diode


Recommended alternative parts

  • LM185-1.2QML-SP  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 


The LM185-1.2 is a micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10µA to 20mA current range, it features exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2 band-gap reference uses only transistors and resistors, low noise and good long term stability result.

Careful design of the LM185-1.2 has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation.

The extremely low power drain of the LM185-1.2 makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life.

Further, the wide operating current allows it to replace older references with a tighter tolerance part.


  • Operating Current of 10µA to 20mA
  • 1Ω Maximum Dynamic Impedance (Typical)
  • Low Temperature Coefficient
  • Radiation Qualified Option
    • 100 krad
    • Low Dose Rate Tested at 10 mrad/s

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Parametrics Compare all products in Voltage Reference Products

Vin (Min) (V)
Vin (Max) (V)
VO (V)
Initial Accuracy (Max) (%)
Temp Coeff (Max) (ppm/ degree C)
Operating Temperature Range (C)
Package Group
VO Adj (Max) (V)
VO Adj (Min) (V)
Min Iz for Regulation (uA)
Temp Coeff (Typ) (ppm/ degree C)
LM185-1.2QML LM185-1.2QML-SP
1.2    1.2   
1.2    1.2   
1.2    1.2   
1    1   
150    150   
Military    Space   
-55 to 125    -55 to 125   
1.2    1.2   
1.2    1.2   
10    10   

Other qualified versions of LM185-1.2QML

Version Part Number Definition
Space LM185-1.2QML-SP Radiation tolerant, ceramic packaging and qualified for use in Space-based application