General Description
Ideal for space critical applications, the LM4040 and LM4041 precision voltage references are available in the subminiature (3mm à 1.3mm) SOT-23 surface-mount package.
The LM4040 is the available in fixed reverse breakdown voltages of 2.500V, 4.096V and 5.000V. The LM4041 is available with a fixed 1.225V or an adjustable reverse breakdown voltage.
The minimum operating current ranges from 60µA for the LM4041-1.2 to 74µA for the LM4040-5.0. LM4040 versions have a maximum operating current of 15mA. LM4041 versions have a maximum operating current of 12mA.
The LM4040 and LM4041 have bandgap reference temperature drift curvature correction and low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.
Data sheets and support documentation can be found on Micrelâs web site at www.micrel.com.
Features
⢠Small SOT-23 package
⢠No output capacitor required
⢠Tolerates capacitive loads
⢠Fixed reverse breakdown voltages of 1.225, 2.500V, 4.096V and 5.000V
⢠Adjustable reverse breakdown version
⢠Contact Micrel for parts with extended temperature range.
Key Specifications
⢠Output voltage tolerance .............................±0.1% (max)
⢠Low output noise (10Hz to 100Hz)
LM4040................................................. 35µVRMS (typ)
LM4041................................................. 20µVRMS (typ)
⢠Wide operating current range
LM4040..................................................60µA to 15mA
LM4041..................................................60µA to 12mA
⢠Industrial temperature range .................. â40°C to +85°C
⢠Low temperature coefficient ................ 100ppm/°C (max)
Applications
⢠Battery-powered equipment
⢠Data acquisition systems
⢠Instrumentation
⢠Process control
⢠Energy management
⢠Product testing
⢠Automotive electronics
⢠Precision audio components
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