LTC®2655 Quad I²C Series


Linear Technology's LTC2655 operates in both the standard and fast modes

Linear Technology's LTC2655 is a family of quad I²C 16-/12-bit rail-to-rail DACs with integrated 10ppm/°C maximum reference. These 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. Additionally, each DAC can also operate with an external reference, which sets the full-scale output to two times the external reference voltage.

The parts use a 2-wire I²C compatible serial interface. The LTC2655 operates in both standard mode (maximum clock rate of 100kHz) and fast mode (maximum clock rate of 400kHz). The LTC2655 incorporates a power-on reset circuit that is controlled by the PORSEL pin. If the PORSEL pin is tied to GND, the DAC resets to zero-scale at power up, or if the pin is tied to VCC, the DAC resets to mid-scale.

LTC265x 16-/12-Bit Quad and Octal Voltage Output DACs
Features
  • Integrated reference 10ppm/°C max.
  • Maximum INL error: ±4LSB at 16 bits
  • Guaranteed monotonic overtemperature
  • Selectable internal or external reference
  • 2.7V to 5.5V supply range (LTC2655-L)
  • Integrated reference buffers
  • Ultralow crosstalk between DACs (<1nVs)
  • Power-on-reset to zero-scale/mid-scale
  • Asynchronous DAC update pin

LTC®2655

Manufacturer Part Number Description Available Quantity Datasheets
LTC2655BIGN-H16#PBF IC DAC 16BIT I2C/SRL 16SSOP 91
LTC2655BIGN-L16#PBF IC DAC 16BIT I2C/SRL 16SSOP 170
LTC2655BIUF-H16#PBF IC DAC 16BIT I2C/SRL 20QFN 72
LTC2655BIUF-L16#PBF IC DAC 16BIT I2C/SRL 20QFN 72
LTC2655IGN-H12#PBF IC DAC 12BIT QUAD CUR OUT 16SSOP 205
LTC2655IGN-L12#PBF IC DAC 12BIT QUAD CUR OUT 16SSOP 169
LTC2655IUF-H12#PBF IC DAC 12BIT QUAD CUR OUT 20QFN 60
LTC2655IUF-L12#PBF IC DAC 12BIT QUAD CUR OUT 20QFN 249