LTC2655 Datasheet | Linear Technology

Features n Integrated Reference 10ppm/°C Max 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 (LTC2655-L) n Integrated Reference Buffers n Ultralow Crosstalk Between DACs (<1n V- s) n Power-On-Reset to Zero-Scale/Mid-Scale n Asynchronous DAC Update Pin n Tiny 20-Lead 4mm × 4mm QFN and 16-Lead Narrow SSOP packages APPLICATIONS n Mobile munications n Process Control and Industrial Automation n Instrumentation n Automatic Test Equipment n Automotive BLOCK DIAGRAM REFP GND REFLO VOUTA DAC A INTERNAL REFERENCE REGISTER REGISTER REGISTER REGISTER VOUTB CA0 CA1 CA2 SCL LDAC DAC B 32-BIT SHIFT REGISTER 2-WIRE INTERFACE REGISTER REGISTER REGISTER REGISTER LTC2655 Quad I2C 16-/12-Bit Rail-to-Rail DACs with 10ppm/°C Max Reference DESCRIPTION The LTC®2655 is a family of Quad I2C 16-/12-Bit Rail-to Rail DACs with integrated 10ppm/°C max reference. The DACs have built-in high performance, rail-to-rail, output buffers and are guaranteed monotonic. The LTC2655-L has a full-scale output of 2.5V with the integrated reference and operates from a single 2.7V to 5.5V supply. The LTC2655-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 full-scale output to 2 times the external reference voltage. The parts use the 2-wire I2C patible serial interface. The LTC2655 operates in both the standard mode (maximum clock rate of 100k Hz) and the fast mode (maximum clock rate of 400k Hz). The LTC2655 incorporates a power-on reset circuit that is controlled by the PORSEL pin. If PORSEL is tied to GND the DACs power-on reset to zero-scale. If PORSEL is tied to VCC, the DACs power-on 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...