Octal, 16-Bit DAC+ with SPI Interface

The AD5676 is a low power, octal, 16-bit buffered voltage output digital-to-analog converter (DAC). The device includes a gain select pin, giving a full-scale output of VREF (gain = 1) or 2 × VREF (gain = 2). The AD5676 DAC operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. The AD5676 is available in 20-lead TSSOP and LFCSP packages.

The internal power-on reset circuit and the RSTSEL pin of the AD5676 ensure that the output DACs power up to zero scale or midscale and then remain there until a valid write takes place. The AD5676 contains a per channel power-down mode that typically reduces the current consumption of the device to 1 µA.

The AD5676 employs a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz, and contains a VLOGIC pin intended for 1.62 V to 5.5 V logic.

Product Highlights

* High Relative Accuracy (INL) 16-bit: ±3 LSB maximum

* −40°C to +125°C temperature range

* 20-lead, TSSOP and LFCSP RoHS-compliant packages

Applications

* Optical transceivers

* Base-station power amplifiers

* Process control (PLC input/output cards)

* Industrial automation

* Data acquisition systems

* High performance

* High relative accuracy (INL): ±3 LSB maximum at 16 bits

* Total unadjusted error (TUE): ±0.14% of FSR maximum

* Offset error: ±1.5 mV maximum

* Gain error: ±0.06% of FSR maximum

* Wide operating ranges

* −40°C to +125°C temperature range

* 2.7 V to 5.5 V power supply

* Easy implementation

* User selectable gain of 1 or 2 (GAIN pin/gain bit)

* Reset to zero scale or midscale (RSTSEL pin)

* 1.8 V logic compatibility

* 50 MHz SPI with readback or daisy chain

* 20-lead, TSSOP and LFCSP RoHS-compliant packages