AD5664 Datasheet | Analog Devices

FEATURES Low power, quad nano DACs AD5664: 16 bits AD5624: 12 bits Relative accuracy: ±12 LSBs max Guaranteed monotonic by design 10-lead MSOP and 3 mm × 3 mm LFCSP_WD 2.7 V to 5.5 V power supply Power-on reset to zero Per channel power-down Serial interface, up to 50 MHz FUNCTIONAL BLOCK DIAGRAM VDD GND VREF AD5624/AD5664 INPUT REGISTER SCLK INTERFACE LOGIC INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTB DAC REGISTER STRING DAC A BUFFER VOUTA SYNC INPUT REGISTER DIN INPUT REGISTER DAC REGISTER STRING DAC C BUFFER VOUTC DAC REGISTER STRING DAC D BUFFER VOUTD APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators Figure 1. Table 1. Related Devices Part No. AD5624R/AD5644R/AD5664R Description 2.7 V to 5.5 V quad, 12-, 14-, 16-bit DACs with internal reference GENERAL DESCRIPTION The AD5624/AD5664, members of the nano DAC family, are low power, quad, 12-, 16-bit buffered voltage-out DACs that operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5624/AD5664 require an external reference voltage to set the output range of the DAC. The part incorporates a poweron reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. The parts contain a power-down feature that reduces the current consumption of the device to 480 n A at 5 V and provides software-selectable output loads while in power-down mode. The low power consumption of these parts in normal operation makes them ideally suited to portable battery-operated equipment. The power consumption is 2.25 m W at 5 V, going down to 2.4 μW in power-down mode. The AD5624/AD5664 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5624/AD5664 use a versatile 3-wire serial interface that operates at clock rates up to 50 MHz, and are patible with standard...