Date: 19/01/2011

New 14/16 bit DACs consume less than 80µA quiescent current

Maxim Integrated Products introduced the MAX5214 (14-bit) and MAX5216 (16-bit) digital-to-analog converters (DACs) with quiescent current of less than 80µA. Maxim suggests these DACs for 2-wire sensors where low current levels must be measured and power efficiency is important. Applications suggested include portable glucose meters and motor controllers in robotic applications.

Power consumption in MAX5214/MAX5216 can be reduced further by writing the power-down sequence into the device registers. The devices can be powered-on to perform the required tasks with 80µA of current consumption in operation mode and then powered down to reduce the electrical current consumption to 0.4µA. Additionally, on power-up, the MAX5214/MAX5216 reset the DAC output to zero, providing extra safety for applications that drive valves or other transducers that need to be off on power-up.

The MAX5214 and MAX5216 provide ±0.25 LSB and ±1 LSB of integral nonlinearity (INL), respectively, over their wide resolution spectrum. They are ideal for high-performance systems executing repetitive tasks in numerous counts that demand the same high precision and accuracy each time. The MAX5214/MAX5216 also integrate an internal buffer.

The MAX5214/MAX5216 operate in industrial environments from -40°C to +105°C. Both devices are offered in a compact 8-pin µMAX package. Pricing starts at $3.89 (1000-up, FOB USA).


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