2013-07-09 Artschip 18-bit DAC suits high-precision ATE
With guaranteed INL (integral nonlinearity) of 2 LSB maximum over temperature, the art5318 18-bit voltage-output DAC from artschip serves as an accurate voltage source for industrial test and measurement, factory automation, and process control. The device also provides DNL (differential nonlinearity) of 1 LSB maximum over its full temperature range of C40C to +105C. Housed in a 4.47.8-mm, 24-pin TSSOP, the ART5318 integrates both output and reference buffers. No external amplifiers are required. Buffered voltage output results in a fast settling time of 3 s and a low offset and gain drift of 0.5 ppm/C of FSR typical. The converters three-wire SPI interface accepts a 1.8-V to 5.5-V logic input, while its force-sense output maintains accuracy when driving loads with long lead lengths. A negative supply option allows full INL and DNL performance down to 0 V. The ART5318 includes user-programmable digital gain and offset correction to enable easy system calibration. It operates from a supply voltage of 2.7 V to 5.5 V, and at power up, the device resets its outputs to zero or mid-scale.