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Eight-channel DACs come with SPI/parallel interface

Posted: 09 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:DAC? SPI? parallel interface?

DAC87x8 converter

Texas Instruments Inc. is offering six new DACs available in 12-, 14- and 16bit versions and with either SPI or parallel interface.

The eight-channel DAC87x8 family features a typical power consumption in normal mode of 14.8mW/channel, dropping to programmable logic controllers, and machine and motion control applications.

The converters offer 3x faster settling time (10??s) than competitive devices while maintaining maximum integral nonlinearity (INL) accuracy of 4 LSB and typical low glitch energy of 1nVs. The DAC87x8 also comes with built-in user calibration balances the system offset of the entire signal chain.

In addition, the DACs feature zero error thermocouple (TC) and gain error TC of #177;3ppm/C that increase system accuracy and repeatability. Two offset DACs allow for either symmetrical or asymmetrical shifting of the output voltage range, allowing a user to customize the application's DAC output without sacrificing resolution.

Customers can also speed time-to-market with compatible TI devices: the REF5050 single voltage reference, Stellaris ARM Cortex-M3-based microcontrollers, as well as C2000 Piccolo and Delfino MCUs for real-time control.

The 16bit DAC8718 (SPI interface) and DAC8728 (parallel interface) are available now in a 7mm x 7mm (SPI version) or 8mm x 8mm (parallel version) QFN package. A 10mm x 10mm TQFP package is also available. Pricing starts at $21.95 in 1,000-unit quantities. Two additional, pin-compatible devices in the family, the 14bit DAC82x8 and the 12bit DAC77x8, are priced at $17.95 and $11.95, respectively, in 1,000-unit quantities.

For application notes on DACs click here.





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