Íêȫ׼ȷµÄ12/14/16λ˫VOUT nanoDAC SPI½Ó¿ÚµÄ4.5VÖÁ5.5VÔÚTSSOP·â×°Êý¾Ý±íad5025/ad5045/ad5065Êý¾Ý±í

¡¡¡¡The AD5025/AD5045/AD5065 are low power£¬ dual 12-/14-/16-bit buffered voltage output nanoDAC? DACs offering relative accuracy specifications of ¡À1 LSB INL with individual reference pins£¬ and can operate from a single 4.5 V to 5.5 V supply. The AD5025/ AD5045/AD5065 also offer a differential accuracy specification of ¡À1 LSB. 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 reference for the AD5025/ AD5045/AD5065 are supplied from an external pin and a reference buffer is provided on chip. The AD5025/AD5045/AD5065 incorporate 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 AD5025/AD5045/AD5065 contain a power-down feature that reduces the current consumption of the device to typically 400 nA at 5 V and provides software selectable output loads while in power-down mode. The parts are put into power-down mode over the serial interface. Total unadjusted error for the parts is ¡¶2.5 mV. The parts exhibit very low glitch on power-up. The outputs of all DACs can be updated simultaneously using the LDAC function£¬ with the added functionality of user-selectable DAC channels to simultaneously update. There is also an asynchronous CLR that clears all DACs to a software-selectable code¡ª0 V£¬ midscale£¬ or full scale. The parts also feature a power-down lockout pin£¬ PDL£¬ which can be used to prevent the DAC from entering power-down under any circumstances over the serial interface.