The LTC2668 offers many space-saving features in a compact 6mm x 6mm QFN package, nearly 50% smaller footprint than alternative 16-channel DACs. The LTC2668 can be operated from a single 5V supply, or from dual bipolar supplies depending on the output voltage range requirement. The device includes a precision 2.5V 10ppm/°C max 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 LTC2668 also supports an A/B toggle function for generating an AC bias or for applying dither to a system. Configuration of the LTC2668 is handled via an SPI-compatible serial interface which can be powered from an independent 1.8V to 5V digital supply.
These features makes the LTC2668 suited 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 analyzers and oscilloscopes.
The LTC2668 is offered in both 16-bit and 12-bit versions and is available today in commercial, industrial and automotive (-40°C to 125°C) temperature grades. Pricing begins at $31.25 each for the LTC2668-16 and $25.75 each for the LTC2668-12 in 1,000-piece quantities.