Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package

The LTC1654 is a dual, rail-to-rail voltage output, 14-bit digital-to-analog converter (DAC). It is available in a 16-lead narrow SSOP package, making it the smallest dual 14-bit DAC available. It includes output buffer amplifiers and a flexible serial interface.

The LTC1654 has REFHI pins for each DAC that can be driven up to VCC. The output will swing from 0V to VCC in a gain of 1 configuration or VCC/2 in a gain of 1/2 configuration. It operates from a single 2.7V to 5.5V supply.

The LTC1654 has two programmable speeds: a FAST and SLOW mode with ±1LSB settling times of 3µs or 8.5µs respectively and supply currents of 930µA and 540µA in the two modes. The LTC1654 also has shutdown capability, power-on reset and a clear function to 0V.

Applications

* Digital Calibration

* Industrial Process Control

* Automatic Test Equipment

* Offset/Gain Adjustment

* Multiplying DAC

* 14-Bit Monotonic Over Temperature

* Smallest Dual 14-Bit DAC: 16-Lead Narrow SSOP Package

* Individually Programmable Speed/Power:

* 3.5µs Settling Time at 750µA

* 8µs Settling Time at 450µA

* 3V to 5V Single Supply Operation

* Maximum Update Rate: 0.9MHz

* Buffered True Rail-to-Rail Voltage Outputs

* User Selectable Gain

* Power-On Reset and Clear Function

* Schmitt Trigger On Clock Input Allows Direct Optocoupler Interface