The AD7302 is a dual, 8-bit voltage out DAC that operates from a single +2.7 V to +5.5 V supply. Its on-chip precision output buffers allow the DAC outputs to swing rail to rail. The AD7302 has a parallel microprocessor and DSP-compatible interface with high speed registers and double buffered interface logic. Data is loaded to the registers on the rising edge ofCSorWRand theA/B pin selects either DAC A or DAC B.Reference selection for AD7302 can be either an internal reference derived from the VDDor an external reference applied at the REFIN pin. Both DACs can be simultaneously updated using the asynchronousLDACinput and can be cleared by using the asynchronousCLRinput.The low power consumption of this part makes it ideally suited to portable battery operated equipment. The power consumption is less than 10 mW at 3.3 V, reducing to 3 µW in powerdown mode.The AD7302 is available in a 20-pin plastic dual-in-line package, 20-lead SOIC and a 20-lead TSSOP package.APPLICATIONSPortable Battery Powered InstrumentsDigital Gain and Offset AdjustmentProgrammable Voltage and Current SourcesProgrammable AttenuatorsPRODUCT HIGHLIGHTSLow Power, Single Supply Operation. This part operates from a single +2.7 V to +5.5 V supply and typically consumes 15 mW at 5 V, making it ideal for battery powered applications.The on-chip output buffer amplifiers allow the outputs of the DACs to swing rail to rail with a settling time of typically 1.2 µs.Internal or external reference capability.High speed parallel interface.Power-Down Capability. When powered down the DAC consumes less than 1 µA at 25°C.Packaged in 20-lead DIP, SOIC and TSSOP packages.