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LTC2656IUFD-L12PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC2656IUFD-L12PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 24 page LTC2656 1 2656f BLOCK DIAGRAM FEATURES APPLICATIONS DESCRIPTION Octal 16-/12-Bit Rail-to-Rail DACs with 10ppm/°C Max Reference n Mobile Communications n Process Control and Industrial Automation n Instrumentation n Automatic Test Equipment n Automotive L, LT, LTC and LTM 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. 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(<1nV•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 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 refer- ence 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 communicate via a SPI/MICROWIRE™ com- 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. INTERNAL REFERENCE DECODE CONTROL LOGIC POWER-ON RESET 32-BIT SHIFT REGISTER REFCOMP REFIN/OUT VCC GND DAC A REF REF REF REF REF REF REF REF DAC H VOUTH DAC G VOUTG DAC F VOUTF DAC E VOUTE PORSEL SDO SDI 2656 BD CLR REFLO VOUTA DAC B VOUTB DAC C VOUTC DAC D VOUTD SCK LDAC CS/LD CODE 128 0 1 2 65535 2656 TA01 –1 –2 –4 16384 32768 49152 –3 4 3 DAC A DAC B DAC C DAC D DAC E DAC F DAC G DAC H INL vs Code |
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