LTC2668 - 16-Channel 16-/12-Bit ±10V VOUT SoftSpan DACs with 10ppm/°C Max Reference

The LTC®2668 is a family of 16-channel, 16-/12-bit ±10V digital-to-analog converters with integrated precision references. They are guaranteed monotonic and have built-in rail-to-rail output buffers. These SoftSpan™ DACs offer five output ranges up to ±10V. The range of each channel is independently programmable, or the part can be hardware-configured for operation in a fixed range.

The integrated 2.5V reference is buffered separately to each channel; an external reference can be used for additional range options. The LTC2668 also includes A/B toggle capability via a dedicated pin or software toggle command.

The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz.

Features
  • Precision 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
  • Internal or External Reference
  • Outputs Drive ±10mA Guaranteed
  • 1.8V to 5V SPI Serial interface
  • 6mm × 6mm 40-Lead QFN Package
Typical Application
LTC2668 Typical Application
LTC2668 Typical Application
Applications
  • Optical Networking
  • Instrumentation
  • Data Acquisition
  • Automatic Test Equipment
  • Process Control and Industrial Automation
Packaging
LTC2668 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2668CUJ-12#PBF6x6 QFN-40C$36.79$25.75
LTC2668CUJ-12#TRPBF6x6 QFN-40C$36.85$25.81
LTC2668CUJ-16#PBF6x6 QFN-40C$44.64$31.25
LTC2668CUJ-16#TRPBF6x6 QFN-40C$44.70$31.31
LTC2668HUJ-12#PBF6x6 QFN-40H$48.50$33.95
LTC2668HUJ-12#TRPBF6x6 QFN-40H$48.56$34.01
LTC2668HUJ-16#PBF6x6 QFN-40H$57.64$40.35
LTC2668HUJ-16#TRPBF6x6 QFN-40H$57.70$40.41
LTC2668IUJ-12#PBF6x6 QFN-40I$42.14$29.50
LTC2668IUJ-12#TRPBF6x6 QFN-40I$42.20$29.56
LTC2668IUJ-16#PBF6x6 QFN-40I$51.36$35.95
LTC2668IUJ-16#TRPBF6x6 QFN-40I$51.42$36.01
Demo Boards
Part NumberDescriptionPrice
DC2025A-ALTC2668-16 Demoboard | 16-Channel 16-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (req DC2026)$100.00
DC2025A-BLTC2668-12 Demo Board | 16-Channel 12-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (req DC2026)$100.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
Datasheet
Reliability Data
Product Selector Card
Press Release
Software and Simulation
CAD Symbol
Ad
Linduino
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