ADI EVAL-AD5780SDZ

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Overview

The AD5780ACPZ is a true 18-bit, unbuffered voltage output digitalto-analogconverter (DAC) that operates from a bipolar supplyof up to 33 V. The AD5780ACPZ 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 AD5780ACPZ 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.

Features