Description

The AD5780 is a true 18-bit, unbuffered voltage output digitalto-analogconverter (DAC) that operates from a bipolar supplyof up to 33 V. The AD5780 accepts a positive reference inputrange of 5 V to VDD ? 2.5 V and a negative reference input rangeof VSS + 2.5 V to 0 V. Both reference inputs are buffered on chipand external buffers are not required. The AD5780 offers arelative accuracy specification of ?1 LSB maximum range, andoperation is guaranteed monotonic with a ?1 LSB differentialnonlinearity (DNL) maximum range specification.The part uses a versatile 3-wire serial interface that operates atclock rates of up to 35 MHz and is compatible with standardserial peripheral interface (SPI), QSPI?, MICROWIRE?, andDSP interface standards. The part incorporates a power-onreset circuit that ensures that the DAC output powers up to 0 Vin a known output impedance state and remains in this stateuntil a valid write to the device takes place. The part providesan output clamp feature that places the output in a defined loadstate.Product Highlights True 18-bit accuracy. Wide power supply range of up to ?16.5 V. ?40?C to +125?C operating temperature range. Low 8 nV/?Hz noise. Low ?0.018 ppm/?C gain error temperature coefficient.Applications Medical instrumentation Test and measurement Industrial control Scientific and aerospace instrumentation Data acquisition systems Digital gain and offset adjustment Power supply control

Type:

Part number: EVAL-AD5780SDZ

More details from Analog Devices Inc.