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High accuracy 18-bit DAC simplifies industrial system designs

Dallas, Tex. — Texas Instruments Inc. (TI) has claimed the industry's highest accuracy digital-to-analog converter (DAC), which features 18-bit monotonic performance, +/-2 LSB integral nonlinearity (INL) and +/-1 LSB differential nonlinearity (DNL). Housed in a small QFN-24 package, the 18-bit DAC9881 enables customers to increase system performance and simplify designs in precision industrial applications such as automatic test equipment, instrumentation, process control, data acquisition and communications systems.

The DAC9881 is a single-channel, voltage-output DAC with an on-chip, low-noise output buffer, which reduces the number of external components required. The device supports a SPI serial interface capable of operating with input data clock frequencies up to 50 MHz for a fast interface to the most popular DSPs, MCUs and FPGAs. The DAC features low power consumption of 4 mW at 5 V and small packaging for higher density board layouts.

Other key features include 24 nV/rtHz noise, 5-us settling time, rail-to-rail output swing over the full supply range of 2.7 V to 5.5 V and selectable power-on reset to zero-scale or midscale.

The 18-bit monotonic performance of the DAC9881 is said to guarantee stability in closed-loop applications, while the low linearity error, low noise and 4x more granularity than 16-bit DACs deliver increased accuracy of open-loop applications.

Pricing: Starts at $16.90 each in quantities of 1,000.

Availability: Available now. An evaluation module is also available.
Product information: DAC9881 and Amplifier and Data Converter Selection Guide

Texas Instruments ,1-800-477-8924, www.ti.com

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