Series reference

Linear Technology has introduced the LT6650, claimed to be the lowest voltage series reference available.

The device features a built-in rail-to-rail output buffer amplifier and ±1% guaranteed accuracy from -40 to 85°C. The device is suitable for portable industrial and medical equipment, plus low power instrumentation.

Operating over a 1.4 to 18 V supply, the device consumes less than 6 µA with supply levels up to 18 V. Using external gain resistors, the output voltage can be adjusted from 400 mV to the positive supply rail using the on-chip rail-to-rail buffer amp.

The device can be configured to operate in either shunt or series mode and the output buffer is capable of sourcing or sinking up to 200 µA.

Three temperature grades cover the commercial (0 to 70°C), industrial (-40 to 85°C) and automotive (40 to 125°C) ranges. All grades are in full production.

Features include: low quiescent current of 5.6 µA; ±0.75% accuracy from 0 to 70°C; ±1% accuracy from -40 to 85°C; ±1.51 accuracy from -40 to 125°C; rail-to-rail buffer amplifier; shunt configurable.