16-Channel, 16-Bit ±10V SoftSpan DAC Drives 10mA & 1000pF Loads

News Release  www.linear.com
16-Channel, 16-Bit ±10V SoftSpan DAC Drives 10mA & 1000pF Loads
MILPITAS, CA – June 16, 2014 – Linear Technology Corporation introduces the
LTC2668-16, a 16-channel, 16-bit voltage output digital-to-analog converter (DAC) with
SoftSpanTM outputs, each of which can be independently configured for one of five selectable
unipolar and bipolar output ranges up to ±10V. Each rail-to-rail DAC output is capable of
sourcing or sinking 10mA with guaranteed load regulation and is stable driving capacitive loads
as large as 1000pF. This makes the LTC2668 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 analyzers and oscilloscopes.
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/oC 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.
The LTC2668 is offered in both 16-bit and 12-bit versions and is available today in
commercial, industrial and automotive (-40oC to 125oC) 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.
The DC2025A evaluation board for the LTC2668 family is available at www.linear.com/demo or
via a local Linear Technology sales office. The demo board is supported by the Linduino™
firmware development system, using the DC2026A. For more information, visit
www.linear.com/product/LTC2668 and www.linear.com/solutions/linduino
16-Channel, 16-Bit ±10V SoftSpan DAC Drives 10mA & 1000pF Loads
page 2
Photo Caption: 16-Bit, 16-Channel DAC in 6mm x 6mm QFN
Summary of Features: LTC2668
Precision Integrated Reference 10ppm/°C Max
Independently Programmable Output Ranges: 0V to 5V,
0V to 10V, ±2.5V, ±5V, ±10V
Full 16-Bit/12-Bit Resolution at All Ranges
Maximum INL Error: ±4LSB at 16 Bits
A/B Toggle via Software or Dedicated Pin
16:1 Analog Multiplexer
Guaranteed Monotonic Over Temperature
Asynchronous DAC Update Pin
Internal or External Reference
Outputs Drive ±10mA Guaranteed
1.8V to 5V SPI Serial interface
6mm x 6mm 40-Lead QFN Package
About Linear Technology Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company’s products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit www.linear.com
, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and SoftSpan is a
trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
Press Contacts:
North America / Worldwide
UK & Nordic
John Hamburger, Director Marketing
Tel: 408-432-1900 ext 2419
Alan Timmins
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
Tel: 408-432-1900 ext 2233