Analogue, Mixed Signal, LSI


Digital-to-analog converter with 16 channels

17 September 2014 Analogue, Mixed Signal, LSI

Linear Technology’s LTC2668-16 is a 16-channel, 16-bit voltage output digital-to-analog converter (DAC) with SoftSpan outputs, each of which can be independently configured for one of five selectable unipolar and bipolar output ranges up to ±10 V.

Each rail-to-rail DAC output is capable of sourcing or sinking 10 mA with guaranteed load regulation and is stable driving capacitive loads as large as 1000 pF. This makes the IC ideal for driving a variety of demanding loads in applications such as optical modules, programmable logic controllers (PLCs), MRI and X-ray imaging, automatic test equipment, laser etch equipment, spectrum analysers and oscilloscopes.

Housed in a 6 x 6 mm QFN package, the LTC2668 can be operated from a single 5 V supply or from dual bipolar supplies, depending on the output voltage range required. It includes a precision 2,5 V, 10 ppm/°C reference to generate the five SoftSpan output ranges, or it can be driven with an external reference.

A convenient 16:1 high-voltage analog multiplexer enables the user to monitor circuit integrity or perform in-circuit calibration, saving significant board real estate. The device also supports an A/B toggle function for generating an AC bias or for applying dither to a system. Configuration is handled via an SPI-compatible serial interface.

The LTC2668 is offered in both 16-bit and 12-bit versions, and in commercial, industrial and automotive temperature grades.

For more information contact Kevin Godfrey, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected], www.arrow.altech.co.za



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