2.5·üµ½5.5·ü230¦ÌË«¹ìµ½¹ìÊä³öµçѹµÄ8/10/12λµÄÊýģת»»Æ÷AD5302/AD5312/AD5322Êý¾Ý±í

¡¡¡¡The AD5302/AD5312/AD5322 are dual 8-£¬ 10-£¬ and 12-bit buffered voltage output DACs in a 10-lead MSOP that operate from a single 2.5 V to 5.5 V supply£¬ consuming 230 ¦ÌA at 3 V. Their on-chip output amplifiers allow the outputs to swing railto-rail with a slew rate of 0.7 V/¦Ìs. The AD5302/AD5312/AD5322 utilize a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI?£¬ QSPI?£¬ MICROWIRE?£¬ and DSP interface standards. The references for the two DACs are derived from two reference pins £¨one per DAC£©¡£ The reference inputs can be configured as buffered or unbuffered inputs. The outputs of both DACs can be updated simultaneously using the asynchronous LDAC input. The parts incorporate a power-on reset circuit£¬ which ensures that the DAC outputs power-up to 0 V and remain there until a valid write takes place to the device. The parts contain a powerdown feature that reduces the current consumption of the devices to 200 nA at 5 V £¨50 nA at 3 V£© and provides softwareselectable output loads while in power-down mode. The low power consumption of these parts in normal operation makes them ideally suited for portable battery-operated equipment. The power consumption is 1.5 mW at 5 V£¬ 0.7 mW at 3 V£¬ reducing to 1 ¦ÌW in power-down mode.