AD7849CRZ

AD7849CRZ is a 16bit serial input multiplying digital-to-analogue converter (DAC). It has a versatile serial interface structure and can be controlled over three lines to facilitate opto-isolator applications. SDOUT is the output of the on-chip shift register and can be used in a daisy-chain fashion to program devices in the multichannel system. The daisy-chain enable (DCEN) input controls this function. The active-low BIN/COMP pin sets the DAC coding; with active-low BIN/COMP set to 0, the coding is straight binary; and with active-low BIN/COMP set to 1, the coding is twos complement. This allows the user to reset the DAC to 0V in both the unipolar and bipolar output ranges. Applications include industrial process controls, PC analogue I/O boards, and instrumentation.

• Guaranteed monotonicity, versatile serial interface
• Output control on power-up and power-down internal or external control
• DAC clears to 0V in both unipolar and bipolar output ranges
• Relative accuracy at 25°C is ±4LSB typical at (VDD = 14.25V to 15.75V)
• Differential nonlinearity is ±0.5LSB maximum at (VDD = 14.25V to 15.75V)
• Power dissipation is 100mW typical at (VDD = 14.25V to 15.75V)
• Slew rate is 4V/μs typical at (VREF+ = 5V; VDD = 14.25V to 15.75V)
• Output noise voltage density is 80nV/√Hz typ at (1KHz to 100KHz, VREF+ = 5V, VDD = 14.25 to 15.75V))
• Digital-to-analogue glitch impulse is 250nV-sec typical at (VREF+ = 5V; VDD = 14.25V to 15.75V)
• Operating temperature range from -40°C to +85°C, 20-lead SOIC-W package

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