The AD57911 is a single 20-bit, unbuffered voltage-output DACthat operates from a bipolar supply of up to 33 V. The AD5791accepts a positive reference input in the range 5 V to VDD – 2.5 Vand a negative reference input in the range VSS + 2.5 V to 0 V.The AD5791 offers a relative accuracy specification of ±1 LSBmax, and operation is guaranteed monotonic with a ±1 LSBdifferential nonlinearity (DNL) maximum specification.The device uses a versatile 3-wire serial interface that operates atclock rates up to 35 MHz and that is compatible with standardserial peripheral interface (SPI), QSPI™, MICROWIRE™, and DSP interface standards. The device incorporates a power-on reset circuit that ensures the DACoutput powers up to 0 V and in a known output impedance stateand remains in this state until a valid write to the device takesplace. The device provides an output clamp feature that places the outputin a defined load state.Product Highlights 1 ppm Accuracy. Wide Power Supply Range up to ±16.5 V. Operating Temperature Range: −40°C to +125°C. Low 7.5 nV/√Hz Noise Spectral Density. Low 0.05 ppm/°C Temperature Drift.Applications Medical instrumentation Test and measurement Industrial control High end scientific and aerospace instrumentation1 Protected by U.S. Patent No. 7,884,747. Other patents pending.
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