AD5684RARUZ

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1. DESCRIPTION

The AD5684RARUZ, members of the nanoDAC+® family, are low power, quad, 16-/14-/12-bit buffered voltage output DACs. The devices include a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). All devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. The devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package. The AD5684RARUZ also incorporate a poweron reset circuit and a RSTSEL pin that ensures that the DAC outputs power up to zero scale or midscale and remains there until a valid write takes place. Each part contains a per-channel power-down feature that reduces the current consumption of the device to 4 µA at 3 V while in power-down mode. The AD5684RARUZ employ a versatile SPI interface that operates at clock rates up to 50 MHz, and all devices contain a VLOGIC pin intended for 1.8 V/3 V/5 V logic.

2. FEATURES

    1. High relative accuracy (INL): ±2 LSB maximum at 16 bits

    2. Low drift 2.5 V reference: 2 ppm/°C typical

    3. Tiny package: 3 mm × 3 mm, 16-lead LFCSP

    4. Total unadjusted error (TUE): ±0.1% of FSR maximum

    5. Offset error: ±1.5 mV maximum

    6. Gain error: ±0.1% of FSR maximum

    7. High drive capability: 20 mA, 0.5 V from supply rails

    8. User selectable gain of 1 or 2 (GAIN pin)

    9. Reset to zero scale or midscale (RSTSEL pin)

  10. 1.8 V logic compatibility

  11. 50 MHz SPI with readback or daisy chain

  12. Low glitch: 0.5 nV-sec

  13. Low power: 3.3 mW at 3 V

  14. 2.7 V to 5.5 V power supply

  15. −40°C to +105°C temperature range

3. APPLICATIONS

    1. Optical transceivers

    2. Base-station power amplifiers

    3. Process control (PLC I/O cards)

    4. Industrial automation

    5. Data acquisition systems

4. PRODUCT HIGHLIGHTS

    1. High Relative Accuracy (INL).

        - AD5684R (12-bit): ±1 LSB maximum

    2. Low Drift 2.5 V On-Chip Reference.

        - 2 ppm/°C typical temperature coefficient

        - 5 ppm/°C maximum temperature coefficient

    3. Two Package Options.

        - 3 mm × 3 mm, 16-lead LFCSP, 16-lead TSSOP