12-Bit Rail-to-Rail DACs with IC Interface

The LTC2606/LTC2616/LTC2626 are single 16-, 14- and 12-bit, 2.7V-to-5.5V rail-to-rail voltage output DACs in a 10-lead DFN package. 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 and load regulation in single-supply, voltage-output DACs.

The parts use a 2-wire, I2C compatible serial interface. The LTC2606/LTC2616/LTC2626 operate in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). An asynchronous DAC update pin (LDAC) is also included.

The LTC2606/LTC2616/LTC2626 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 LTC2606-1/LTC2616-1/LTC2626-1 to midscale. The voltage outputs stay at midscale until a valid write and update take place.

Applications

* Mobile Communications

* Process Control and Industrial Automation

* Instrumentation

* Automatic Test Equipment

* Smallest Pin-Compatible Single DACs:

* LTC2606: 16 Bits

* LTC2616: 14 Bits

* LTC2626: 12 Bits

* Guaranteed 16-Bit Monotonic Over Temperature

* 27 Selectable Addresses

* 400kHz I2C Interface

* Wide 2.7V to 5.5V Supply Range

* Low Power Operation: 270µA at 3V

* Power Down to 1µA, Max

* High Rail-to-Rail Output Drive (±15mA, Min)

* Double-Buffered Data Latches

* Asynchronous DAC Update Pin

* LTC2606/LTC2616/LTC2626: Power-On Reset to Zero Scale

* LTC2606-1/LTC2616-1/LTC2626-1: Power-On Reset to Midscale

* Tiny (3mm × 3mm) 10-Lead DFN Package