LTC2656 Datasheet | Linear Technology

Features n Precision 10ppm/°C Max Reference n Maximum INL Error: ±4LSB at 16 Bits n Guaranteed Monotonic over Temperature n Selectable Internal or External Reference n 2.7V to 5.5V Supply Range (LTC2656-L) n Integrated Reference Buffers n Ultralow Crosstalk Between DACs(<1n V- s) n Power-On-Reset to Zero-Scale/Mid-scale n Asynchronous LDAC Update Pin n Tiny 20-Lead 4mm × 5mm QFN and 20-Lead Thermally Enhanced TSSOP Packages APPLICATIONS n Mobile munications n Process Control and Industrial Automation n Instrumentation n Automatic Test Equipment n Automotive LTC2656 Octal 16-/12-Bit Rail-to-Rail DACs with 10ppm/°C Max Reference DESCRIPTION The LTC®2656 is a family of octal 16-/12-bit rail-to-rail DACs with a precision integrated reference. The DACs have built-in high performance, rail-to-rail, output buffers and are guaranteed monotonic. The LTC2656-L has a full-scale output of 2.5V with the integrated 10ppm/°C reference and operates from a single 2.7V to 5.5V supply. The LTC2656-H has a full-scale output of 4.096V with the integrated reference and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the DAC full-scale output to two times the external reference voltage. These DACs municate via a SPI/MICROWIRE™ patible 4-wire serial interface which operates at clock rates up to 50MHz. The LTC2656 incorporates a power-on reset circuit that is controlled by the PORSEL pin. If PORSEL is tied to GND the DACs reset to zero-scale. If PORSEL is tied to VCC, the DACs reset to mid-scale. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5396245, 6891433. BLOCK DIAGRAM REFP GND REFLO VOUTA DAC A REF REGISTER REGISTER INTERNAL REFERENCE REGISTER REGISTER DAC H REF REFIN/OUT VCC VOUTH REGISTER REGISTER REGISTER...