Features

• Smallest Pin-Compatible Octal DACs:
  LTC2605: 16 Bits
  LTC2615: 14 Bits
  LTC2625: 12 Bits
• Guaranteed Monotonic Over Temperature
• 400kHz I²C Interface
• Wide 2.7V to 5.5V Supply Range
• Low Power Operation: 250µA per DAC at 3V
• Individual Channel Power-Down to 1µA, Max
• Ultralow Crosstalk Between DACs (<10µV)
• High Rail-to-Rail Output Drive (±15mA, Min)
• Double-Buffered Digital Inputs
• 27 Selectable Addresses
• LTC2605/LTC2615/LTC2625: Power-On Reset to Zero Scale
• LTC2605-1/LTC2615-1/LTC2625-1: Power-On Reset to Midscale
• Tiny 16-Lead Narrow SSOP Package

Typical Application

Description

The LTC2605/LTC2615/LTC2625 are octal 16-, 14- and 12-bit, 2.7V to 5.5V rail-to-rail voltage-output DACs in 16-lead narrow SSOP packages. They have built-in high performance output buffers and are guaranteed monotonic.

These parts establish new board-density benchmarks for 16- and 14-bit DACs and advance performance standards for output drive, crosstalk and load regulation in single-supply, voltage-output multiples.

The parts use the 2-wire I²C compatible serial interface. The LTC2605/LTC2615/LTC2625 operate in both the standard mode (maximum clock rate of 100kHz) and the fast mode (maximum clock rate of 400kHz).

The LTC2605/LTC2615/LTC2625 incorporate a power-on reset circuit. During power-up, the voltage outputs rise less than 10mV above zero scale; and after power-up, they stay at zero scale until a valid write and update take place. The power-on reset circuit resets the LTC2605-1/LTC2615-1/LTC2625-1 to midscale. The voltage output stays at midscale until a valid write and update takes place.