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Ultra-low power DACs from National Semiconductor

23.06.2006

The presented DACs have a typical settling time of 3 ... 6 μs in the supply voltage range from 2,7 ... 5,5 V. 122 mW at a supply voltage of 085 V, and in the off state - less than 12 μW (typical consumption).

The low power consumption of DACs makes them suitable for use in battery-powered portable devices in the industrial, medical, and consumer markets. As another example, the DAC124S085 is a 12-bit, 4-channel DAC, with a typical integral non-linearity (INL) of less than +2 least significant bits (LSB) and a typical differential non-linearity (DNL) of less than +3 LSB.

Each DAC provides a rail-to-rail output signal swing, uses an external voltage reference, and has an operating temperature range of -40...105°C. In addition, the clock signal frequency can be 30 MHz at a supply voltage of 2,7 ... 5,25 V.

The strength of National's ADCs and DACs is pin-to-pin compatibility, allowing designers to design just one generic PCB and then easily upgrade.

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