AD5066

Fully Accurate 16-Bit UnBuffered VOUT DAC SPI Interface 2.7 V to 5.5 V in a TSSOP Preliminary Technical Data FEATURES Low power Quad 16 bit DAC, ± 1LSB INL Individual reference pins 2.7 V to 5.5 V power supply Unbuffered voltage output capable of driving 60KΩ Fast Settling time of 4 us typically Power-on reset to zero scale or mid-scale Per channel power-down 3 power-down functions Low glitch on power up Hardware LDAC with LDAC override function CLR Function to programmable code Small 16 lead TSSOP AD5066 FUNCTIONAL BLOCK DIAGRAMS Figure 1.AD5066 APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators Table 1. Related Devices Part No. AD5666 AD5065/45/25 AD5064/44/24 AD5063/62 AD5061 AD5060/40 Description Quad,16-bit buffered D/A,16 LSB INL, TSSOP Quad,16-bit buffered D/A,1 LSB INL, TSSOP Quad 16-bit nanoDAC, 1 LSB INL, TSSOP 16-bit nanoDAC, 1 LSB INL, MSOP 16-/14bit nanoDAC, 4 LSB INL, SOT-23 16-/14bit nanoDAC, 1 LSB INL, SOT-23 GENERAL DESCRIPTION The AD5066 is a low power, 16-bit quad-channel, unbuffered voltage-out DAC offering relative accuracy specs of 1LSB INL with individual reference pin and can operate from a single 2.7V to 5.5V. The AD5066 parts also offer a differential accuracy specification of ±1 LSB. Reference buffers are also provided on-chip. The parts use a versatile 3-wire, low power Schmitt trigger serial interface that operates at clock rates up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The AD5066 incorporates a power-on reset circuit that ensures the DAC output powers up zero scale or midscale and remains there until a valid write takes place to the device. The AD5066 contain a power-down feature that reduces the current consumption of the device to typically 330 nA at 5 V and provides software selectable output loads while in power-down mode. The part can be placed into power-down mode over the serial interface. Total unadjusted error for the part is