LTC2668 Datasheet | Linear Technology

Features nn Precision Reference 10ppm/°C Max nn Independently Programmable Output Ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V nn Full 16-Bit/12-Bit Resolution at All Ranges nn Maximum INL Error: ±4LSB at 16 Bits nn A/B Toggle via Software or Dedicated Pin nn 16:1 Analog Multiplexer nn Guaranteed Monotonic Over Temperature nn Internal or External Reference nn Outputs Drive ±10m A Guaranteed nn 1.8V to 5V SPI Serial interface nn 6mm × 6mm 40-Lead QFN Package Applications nn Optical Networking nn Instrumentation nn Data Acquisition nn Automatic Test Equipment nn Process Control and Industrial Automation LTC2668 16-Channel 16-/12-Bit ±10V VOUT Soft Span DACs with 10ppm/°C Max Reference Description 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 Soft Span™ 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 mand. The SPI/Microwire-patible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Soft Span is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Block Diagram REFP 34 OVRTMP 38 GND 14, 37 REFLO 13, 35 VREF VOUT0 2 VOUT1 3 VOUT2 4 VOUT3 5 VOUT4 6 VOUT5 7 VOUT6 8 VOUT7 9 -  -  - DAC 0 VREF DAC 7 CS/LD 16 SCK 17 SDI 19 SDO 18 MUX 12 SPAN REGISTER -  -  - SPAN -  -  - RGSTR B RGSTR A -  -  - SPAN REGISTER SPAN RGSTR B RGSTR A RGSTR B RGSTR A SPAN SPAN REGISTER INTERNAL REFERENCE MUX...