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Shunt voltage references

LM4040C25-EP

NOT RECOMMENDED FOR NEW DESIGNS

Enhanced Product 2.5-V Precision Micropower Shunt Voltage Reference, 0.5% accuracy

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Data sheet
LM4040C25-EP is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
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Drop-in replacement with upgraded functionality to the compared device
LM4040-N ACTIVE 100-ppm/°C precision micropower shunt voltage reference for cost optimized designs

LM4040C25-EP

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Rating HiRel Enhanced Product VO (V) 2.5 Initial accuracy (max) (%) 0.5 Iz for regulation (min) (µA) 45 VO adj (min) (V) 2.5 VO adj (max) (V) 2.5 Reference voltage (V) Fixed Temp coeff (max) (ppm/°C) 100 Operating temperature range (°C) -55 to 125 Iout/Iz (max) (mA) 15
Rating HiRel Enhanced Product VO (V) 2.5 Initial accuracy (max) (%) 0.5 Iz for regulation (min) (µA) 45 VO adj (min) (V) 2.5 VO adj (max) (V) 2.5 Reference voltage (V) Fixed Temp coeff (max) (ppm/°C) 100 Operating temperature range (°C) -55 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Fixed Output Voltage of 2.5 V
  • Tight Output Tolerances and Low Temperature Coefficient
    • Max 0.65%, 100 ppm/°C
  • Low Output Noise: 35 µVRMS Typ
  • Wide Operating Current Range: 45 µA Typ to 15 mA
  • Stable With All Capacitive Loads; No Output Capacitor Required
  • Fixed Output Voltage of 2.5 V
  • Tight Output Tolerances and Low Temperature Coefficient
    • Max 0.65%, 100 ppm/°C
  • Low Output Noise: 35 µVRMS Typ
  • Wide Operating Current Range: 45 µA Typ to 15 mA
  • Stable With All Capacitive Loads; No Output Capacitor Required

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 an output voltage tolerance of 0.65%.

Packaged in a space-saving SOT-23-3 package and requiring a minimum current of 45 µA (typ), the LM4040 also is ideal for portable applications. The LM4040C25 is characterized for operation over an ambient temperature range of –55°C to 125°C.

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 an output voltage tolerance of 0.65%.

Packaged in a space-saving SOT-23-3 package and requiring a minimum current of 45 µA (typ), the LM4040 also is ideal for portable applications. The LM4040C25 is characterized for operation over an ambient temperature range of –55°C to 125°C.
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* Radiation & reliability report LM4040C25MDBZTEP Reliability Report 05 Sep 2013
* Data sheet LM4040-EP Precision Micropower Shunt Voltage Reference . datasheet (Rev. A) 15 Sep 2011

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