Quad Current Output 12-/14-/16-Bit SoftSpan DACs with Parallel I/O

The LTC2755 is a family of quad 12-, 14-, and 16-bit multiplying parallel-input, current-output DACs. These DACs operate from a single 2.7V to 5.5V supply and are all guaranteed monotonic over temperature. The LTC2755A-16 provides 16-bit performance (±1LSB INL and DNL) over temperature without any adjustments. These SoftSpan™ DACs offer six output ranges—two unipolar and four bipolar—that can be programmed through the parallel interface, or pinstrapped for operation in a single range.

The LTC2755 DACs use a bidirectional input/output parallel interface that allows readback of any internal register, including the DAC output span settings. A power-on reset circuit resets the DAC outputs to 0V when power is initially applied. A logic low on the CLR pin asynchronously clears the DACs to 0V in any output range.

The parts are specified over commercial and industrial temperature ranges.

Applications

* High Resolution Offset and Gain Adjustment

* Process Control and Industrial Automation

* Automatic Test Equipment

* Data Acquisition Systems

* Program or Pin-Strap Six Output Ranges

* Unipolar: 0V to 5V, 0V to 10V

* Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V

* Maximum 16-Bit INL Error: ±1 LSB over Temperature

* Low 1μA (Maximum) Supply Current

* Guaranteed Monotonic over Temperature

* Low Glitch Impulse 1nV•s

* 2.7V to 5.5V Single Supply Operation

* 2μs Settling Time to ±1 LSB

* Parallel Interface with Readback of All Registers

* Asynchronous CLR Pin Clears DAC Outputs to 0V in

* Any Output Range

* Power-On Reset to 0V

* 64-Pin 9mm × 9mm QFN Package