The AD5683R/AD5682R/AD5681R/AD5683, members of thenanoDAC+? family, are low power, single-channel, 16-/14-/12-bitbuffered voltage out digital-to-analog converters (DACs). Thedevices, except the AD5683, include an enabled by default internal2.5 V reference, offering 2 ppm/?C drift. The output span can beprogrammed to be 0 V to VREF or 0 V to 2 ? VREF. All devicesoperate from a single 2.7 V to 5.5 V supply and are guaranteedmonotonic by design. The devices are available in a 2.00 mm ?2.00 mm, 8-lead LFCSP or a 10-lead MSOP.The internal power-on reset circuit ensures that the DAC registeris written to zero scale at power-up while the internal outputbuffer is configured in normal mode. TheAD5683R/AD5682R/AD5681R/AD5683 contain a power-downmode that reduces the current consumption of the device to 2 ?A(maximum) at 5 V and provides software selectable output loadswhile in power-down mode.The AD5683R/AD5682R/AD5681R/AD5683 use a versatile3-wire serial interface that operates at clock rates of up to 50 MHz.Some devices also include asynchronous RESET pin and VLOGICpin options, allowing 1.8 V compatibilityProduct Highlights High Relative Accuracy (INL). AD5683R/AD5683 (16-bit): ?2 LSB maximum. Low Drift, 2.5 V On-Chip Reference. 2 ppm/?C typical temperature coefficient. 5 ppm/?C maximum temperature coefficient. Two Package Options. 2.00 mm ? 2.00 mm, 8-lead LFCSP. 10-lead MSOP.Applications Process controls Data acquisition systems Digital gain and offset adjustment Programmable voltage sources

The ADP2108 is a high efficiency, low quiescent current step-down dc-to-dc converter manufactured in two different packages. The total solution requires only three tiny external components. It uses a proprietary, high speed current mode, constant frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2108 has a power save mode that reduces the switching frequency under light load conditions.The ADP2108 runs on input voltages of 2.3 V to 5.5 V, which allows for single lithium or lithium polymer cell, multiple alkaline or NiMH cell, PCMCIA, USB, and other standard power sources. The maximum load current of 600 mA is achievable across the input voltage range.The ADP2108 is available in fixed output voltages of 3.3 V, 3.0 V, 2.5 V, 2.3 V, 1.82 V, 1.8 V, 1.5 V, 1.3 V, 1.2 V, 1.1 V, and 1.0 V. All versions include an internal power switch and synchronous rectifier for minimal external part count and high efficiency. The ADP2108 has an internal soft start and is internally compensated. During logic controlled shutdown, the input is disconnected from the output and the ADP2108 draws less than 1 ?A from the input source.Other key features include undervoltage lockout to prevent deep battery discharge and soft start to prevent input current over-shoot at startup. The ADP2108 is available in 5-ball WLCSP and 5-lead TSOT packages. The ADP2109 provides the same features and operations as the ADP2108 and has the additional function of a discharge switch in the WLCSP package.APPLICATIONS PDAs and palmtop computers Wireless handsets Digital audio, portable media players Digital cameras, GPS navigation units

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