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2.7至5.5伏14位DAC的SPI接口的纳米在LFCSP和SC70的ad5641数据表
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The AD5641， a member of the nanoDAC® family， is a single， 14-bit， buffered， voltage-out DAC that operates from a single 2.7 V to 5.5 V supply， typically consuming 75 µA at 5 V. The part comes in tiny LFCSP and SC70 packages. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5641 uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with SPI®， QSPI™， MICROWIRE™， and DSP interface standards. The reference for AD5641 is derived from the power supply inputs and， therefore， gives the widest dynamic output range. The part incorporates a power-on reset circuit， which ensures that the DAC output powers up to 0 V and remains there until a valid write to the device takes place. The AD5641 contains a power-down feature that reduces current consumption typically to 0.2 µA at 3 V， and provides software-selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface. The low power consumption of the part in normal operation makes it ideally suited to portable battery-operated equipment. The combination of small package and low power makes this nanoDAC device ideal for level-setting requirements such as generating bias or control voltages in space-constrained and power-sensitive applications
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