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AD5620:  Single, 12-Bit nanoDAC™ with 5 ppm/°C On-Chip Reference in SOT-23

The AD5620/AD5640/AD5660, members of the nanoDAC family of devices, are low power, single, 12-/14-/16-bit, buffered voltage-out DACs and are guaranteed monotonic by design.

The AD5620/AD5640/AD5660-1 parts include an internal, 1.25 V, 5 ppm/°C reference, giving a full-scale output voltage range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include an internal, 2.5 V, 5 ppm/°C reference, ...More

AD5620:  Single, 12-Bit nanoDAC™ with 5 ppm/°C On-Chip Reference in SOT-23

Product Description

The AD5620/AD5640/AD5660, members of the nanoDAC family of devices, are low power, single, 12-/14-/16-bit, buffered voltage-out DACs and are guaranteed monotonic by design.

The AD5620/AD5640/AD5660-1 parts include an internal, 1.25 V, 5 ppm/°C reference, giving a full-scale output voltage range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include an internal, 2.5 V, 5 ppm/°C reference, giving a full-scale output voltage range of 5 V. The reference associated with each part is available at the VREFOUT pin.

The parts incorporate a power-on reset circuit to ensure that the DAC output powers up to 0 V (AD5620/AD5640/AD5660-1-2) or midscale (AD5620-3 and AD5660-3) and remains there until a valid write takes place. The parts contain a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode. The power consumption is 2.5 mW at 5 V, reducing to 1 μW in power-down mode.

The AD5620/AD5640/AD5660 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. For remote sensing applications, the output amplifier’s inverting input is available to the user. The AD5620/AD5640/AD5660 use a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards.

Product Highlights

  1. 12-/14-/16-bit nanoDAC — 12-bit accuracy guaranteed.
  2. On-chip, 1.25 V/2.5 V, 5 ppm/°C reference.
  3. Available in 8-lead SOT-23 and 8-lead MSOP packages.
  4. Power-on reset to 0 V or midscale.
  5. 10 µs settling time.

Applications

  • Process control
  • Data acquisition systems
  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Programmable attenuators

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    EVALUATION BOARDS & DEVELOPMENT KITS

    • 12-Bit DAC; 12-Bit Accuracy Guaranteed
    • On-chip, 1.25 V/2.5 V, 5 ppm/°C reference
    • Tiny 8-lead SOT-23/MSOP packages
    • Power-down to 480 nA @ 5 V, 200 nA @ 3 V
    • 3 V/5 V single power supply
    • Guaranteed 16-bit monotonic by design
    • Power-on reset to zero/midscale
    • 3 power-down functions
    • Serial interface with Schmitt-triggered inputs
    • Rail-to-rail operation
    • SYNC interrupt facility
    • Resolution (Bits): 12bit
    • DAC Update Rate: 125kSPS
    • DAC Settling Time: 8µs
    • # DAC Outputs: 1
    • DAC Type: Voltage Out
    • DAC Input Format: Ser,SPI
    • Output FSR: (Uni 2.5V),(Uni 5V)
    • Ref Int/Ext: Int
    • Supply Vnom: Single(+2.7 to +5.5),Single(+2.7),Single(+3),Single(+3.3),Single(+5)
    • Pwr Diss: 5mW
    • Package: SOP,SOT

    Functional Block Diagram for AD5620

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