AD5765:  Complete Quad, 16-Bit, High Accuracy, Serial Input, ±5V DACs

The AD5765 is a quad, 16-bit, serial input, bipolar voltage output digital-to-analog converter that operates from supply voltages of ±4.75 V up to ±5.25 V. Nominal full-scale output range is ±4.096 V. ...More

This product is not yet released to manufacturing. Please contact the DAC Development Group for sample availability and additional technical information.

AD5765:  Complete Quad, 16-Bit, High Accuracy, Serial Input, ±5V DACs

Product Description

The AD5765 is a quad, 16-bit, serial input, bipolar voltage output digital-to-analog converter that operates from supply voltages of ±4.75 V up to ±5.25 V. Nominal full-scale output range is ±4.096 V. The AD5765 provides integrated output amplifiers, reference buffers and proprietary power-up/powerdown control circuitry. The part also features a digital I/O port, which is programmed via the serial interface. The parts incorporate digital offset and gain adjust registers per channel.

The AD5765 is a high performance converter that offers guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB, low noise, and 10 µs settling time. During power-up (when the supply voltages are changing), the outputs are clamped to 0 V via a low impedance path.

The AD5765 uses a serial interface that operates at clock rates of up to 30 MHz and is compatible with DSP and microcontroller interface standards. Double buffering allows the simultaneous updating of all DACs. The input coding is programmable to either twos complement or offset binary formats. The asynchronous clear function clears all DAC registers to either bipolar zero or zero scale depending on the coding used. The AD5765 is ideal for both closed-loop servo control and open-loop control applications. The AD5765 is available in a 32-lead TQFP, and offers guaranteed specifications over the −40°C to +105°C industrial temperature range. See Figure 1, the functional block diagram.

Applications:

  • Industrial automation
  • Open-/closed-loop servo control
  • Process control
  • Data acquisition systems
  • Automatic test equipment
  • Automotive test and measurement
  • High accuracy instrumentation

    • Features

    • Complete quad, 16-bit digital-to-analog converters (DACs)
    • Programmable output range: ±4.096 V, ±4.201 V, or ±4.311 V
    • ±1 LSB maximum INL error, ±1 LSB maximum DNL error
    • Low noise: 60 nV/√Hz
    • Settling time: 10 µs maximum
    • Integrated reference buffers
    • Logic output control pins
    • See data sheet for additional features.

    Diagrams

    AD5765 Diagram
    Functional Block Diagram for AD5765

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