Octal 14-Bit Rail-to-Rail DACs in 16-Lead SSOP

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 mid-scale. The voltage output stays at mid-scale until a valid write and update takes place.

Applications

* Mobile Communications

* Process Control and Industrial Automation

* Instrumentation

* Automatic Test Equipment

* 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 Mid-scale

* Tiny 16-Lead Narrow SSOP Package