Product Details
●The AD5780 1 is a true 18-bit, unbuffered voltage output 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 specifica-tion of ±1 LSB maximum range, and operation is guaranteed monotonic with a ±1 LSB 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 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.
●1Protected by U.S. Patent No. 7,884,747 and 8,089,380.
●Product Highlights
● 1. True 18-Bit Accuracy.
● 2. Wide Power Supply Range of Up to ±16.5 V.
● 3. −40°C to +125°C Operating Temperature Range.
● 4. Low 8 nV/√Hz Noise.
● 5. 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
●### Features and Benefits
● 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 x 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
