Description AD56622.7 V to 5.5 V, 16-bit DAC in SOT-23, external reference FUNCTIONAL BLOCK DIAGRAM AD5620/AD5640/AD5660VREFOUTGNDREF(+)VDDRESISTORNETWORKPOWER-DOWNCONTROL LOGICDACREGISTERPOWER-ONRESET1.25/2.5VREFOUTPUTBUFFER16-BITDACINPUTCONTROLLOGICVOUTVSYNCSCLKDIN04539-001 Figure 1. GENERAL DESCRIPTION The AD5620/AD5640/AD5660, members of the nanoDAC family of devices, are low power, single, 12-/14-/16-bit, buffered voltage-out DACs and are guaranteed monotonic by design. The AD5620/AD5640/AD5660-1 parts include an internal, 1.25 V, 5 ppm/ C reference, giving a full-scale output voltage range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include voltage range of 5 V. The reference associated with each part is available at the VREFOUT pin. The parts incorporate a power-on reset circuit to ensure that the DAC output powers up to 0 V (AD5620/AD5640/AD5660-1-2) or midscale (AD5620-3 and AD5660-3) and remains there until a valid write takes place. The parts contain a power-down feature th FEATURES Low power, single nanoDACs AD5660: 16 bits AD5640: 14 bits AD5620: 12 bits 12-bit accuracy guaranteed On-chip, 1.25 V/2.5 V, 5 ppm/ C reference Tiny 8-lead SOT-23/MSOP packages Power-down to 480 nA @ 5 V, 200 nA @ 3 V 3 V/5 V single power supply Guaranteed 16-bit monotonic by design Power-on reset to zero/midscale 3 power-down functions Serial interface with Schmitt-triggered inputs Rail-to-rail operation SYNC interrupt facility APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators PRODUCT HIGHLIGHTS 1. 12-/14-/16-bit nanoDAC 12-bit accuracy guaranteed. 2. On-chip, 1.25 V/2.5 V, 5 ppm/ C reference. 3. Available in 8-lead SOT-23 and 8-lead MSOP packages. 4. Power-on reset to 0 V or midscale. 5. 10 s settling time. Table 1. Related Device Part No. Description AD56622.7 V to 5.5 V, 16-bit DAC in SOT-23, external reference FUNCTIONAL BLOCK DIAGR Specifications subject to change without notic