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STMicroelectronics LM4040

Precision micropower shunt voltage reference

The LM4040 is a low power and high accuracy shunt voltage reference providing a stable output voltage over the industrial temperature range (-40 °C to +125 °C), with a maximum temperature coefficient of 70 ppm/°C. It is available in 0.1%, 0.2%, 0.5% and 1% initial accuracy versions. The SOT323-5L and SOT23-3L packages can be designed in applications where space saving is a critical issue. The very low operating current is a key advantage for power restricted designs. The LM4040 is very stable and can be used in a broad range of application conditions.

Key features

Fixed 2.048 V, 2.5 V, 3.0 V, 4.096 V and 5.0 V output voltages
Ultra low operating current: 10 µA at 25 °C
High precision @ 25 °C: +/- 0.1% (for LM4040A) to +/- 1% (for LM4040D)
Very low LF noise: typ.10 µ Vp-p

Additional features

Fixed 2.048 V, 2.5 V, 3.0 V, 4.096 V and 5.0 V output voltages
Ultra low operating current: 10 µA at 25 °C
High precision @ 25 °C: +/- 0.1% (LM4040A), +/- 0.2% (LM4040B), +/- 0.5 % (LM4040C), +/- 1% (LM4040D)
Very low LF noise: typ.10 µ Vp-p
Stable when used with capacitive loads
Industrial (-40 °C to +125 °C) temperature range
70 ppm/°C max. temperature coefficient
Available in SOT23-3L and SOT323-5L packages