Linear Technology‘s latest precision voltage reference operates on only 850nA of supply current. 

The LT6656 has an initial error of less than 0.05% and a guaranteed temperature drift of less than 10ppm/°C. 

With an output drive capability of 5mA, the LT6656 can be used as both the supply voltage and the precision reference for a low power ADC. 

It can also be used to replace low power shunt references.

The bipolar device can withstand reverse battery conditions, accept input voltages up to 18V and operate from voltages as low as 3mV above the output voltage.  When unpowered, the output is high impedance, avoiding loading on the rest of the circuit.  

The LT6656 is fully specified for operation from –40°C to 85°C.