Fully Accurate 16-Bit V DAC SPI Interface 2.7 V to 5.5 V in an MSOP

The AD5063, a member of the Analog Device Inc., nanoDAC™ family, is a low power, single 16-bit, unbuffered voltage-output DAC that operates from a single 2.7 V to 5 V supply. The device offers a relative accuracy specification of ±1 LSB, and operation is guaranteed monotonic with a ±1 LSB DNL specification. The AD5063 comes with on-board resistors in a 10-lead MSOP, allowing bipolar signals to be generated with an output amplifier. The device uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and that is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The reference for the AD5063 is supplied from an external VREF pin. A reference buffer is also provided on-chip. The device incorporates a power-on reset circuit that ensures the DAC output powers up to midscale and remains there until a valid write to the device takes place. The device contains a power-down feature that reduces the current consumption of the device to typically 300 nA at 5 V and provides software-selectable output loads while in power-down mode. The device is put into power-down mode via the serial interface. Total unadjusted error for the device is <1 mV.

This device exhibits very low glitch on power-up.

Product Highlights

* Available in 10-lead MSOP.

* 16-bit accurate, 1 LSB INL.

* Low glitch on power-up.

* High speed serial interface with clock speeds up to 30 MHz.

* Three power-down modes available to the user.

Applications

* Process control

* Data acquisition systems

* Portable battery-powered instruments

* Digital gain and offset adjustment

* Programmable voltage and current sources

* Programmable attenuators

* Single 16-bit DAC, 1 LSB INL

* Power-on reset to midscale

* Guaranteed monotonic by design

* 3 power-down functions

* Low power serial interface with Schmitt-triggered inputs

* 10-lead MSOP, low power

* Fast settling time of 1 µs maximum (AD5063-1 model)

* 2.7 V to 5.5 V power supply

* Low glitch on power-up

* Unbuffered voltage capable of driving 60 kΩ load

* SYNC interrupt facility