The AD5780 is a true 18-bit, unbuffered voltage output digitalto-analog converter (DAC) that operates from a bipolar supply of up to 33 V. The AD5780 accepts a positive reference input range of 5 V to VDD − 2.5 V and a negative reference input range of VSS + 2.5 V to 0 V. Both reference inputs are buffered on chip and external buffers are not required. The AD5780 offers a relative accuracy specification of ±1 LSB maximum range, and operation is guaranteed monotonic with a ±1 LSB differential nonlinearity (DNL) maximum range specification. The part uses a versatile 3-wire serial interface that operates at clock rates of up to 35 MHz and is compatible with standard serial peripheral interface (SPI), QSPI™, MICROWIRE™, and DSP interface standards. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides an output clamp feature that places the output in a defined load state. 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 * True 18-bit voltage output DAC, ±1 LSB INL * 8 nV/√Hz output noise spectral density * 0.025 LSB long-term linearity error stability * ±0.018 ppm/°C gain error temperature coefficient * 2.5 µs output voltage settling time * 3.5 nV-sec midscale glitch impulse * Integrated precision reference buffers * Operating temperature range: −40°C to +125°C * 4 mm × 5 mm LFCSP package * Wide power supply range of up to ±16.5 V * 35 MHz Schmitt triggered digital interface * 1.8 V-compatible digital interface https://elecena.pl/product/2471860/system-ready-18-bit-1-lsb-inl-voltage-output-dac 2011-12-31 https://elecena.pl/product/2471860/system-ready-18-bit-1-lsb-inl-voltage-output-dac 2018-03-29 https://elecena.pl/product/2471860/system-ready-18-bit-1-lsb-inl-voltage-output-dac 2025-01-21