AD5320

a +2.7 V to +5.5 V, 140 ␮A, Rail-to-Rail Output 12-Bit DAC in a SOT-23 AD5320* FUNCTIONAL BLOCK DIAGRAM VDD GND POWER-ON RESET FEATURES Single 12-Bit DAC 6-Lead SOT-23 and 8-Lead ␮SOIC Packages Micropower Operation: 140 ␮A @ 5 V Power-Down to 200 nA @ 5 V, 50 nA @ 3 V +2.7 V to +5.5 V Power Supply Guaranteed Monotonic by Design Reference Derived from Power Supply Power-On-Reset to Zero Volts Three Power-Down Functions Low Power Serial Interface with Schmitt-Triggered Inputs On-Chip Output Buffer Amplifier, Rail-to-Rail Operation SYNC Interrupt Facility APPLICATIONS Portable Battery Powered Instruments Digital Gain and Offset Adjustment Programmable Voltage and Current Sources Programmable Attenuators AD5320 REF (+) REF (–) DAC REGISTER 12-BIT DAC OUTPUT BUFFER VOUT INPUT CONTROL LOGIC POWER-DOWN CONTROL LOGIC RESISTOR NETWORK SYNC SCLK DIN GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD5320 is a single, 12-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 µA at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile three-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 reference for AD5320 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on-reset circuit that ensures that the DA...