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AD5373:  32-Channel, 14-Bit, Serial Input, Voltage-Output DAC

The AD5372/AD5373 contain 32, 16-bit or 14-bit digital-to-analog converters (DACs) in a single 64-lead LQFP. The devices provide buffered voltage outputs with a nominal span of 4× the reference voltage. The gain and offset of each DAC can be inde-pendently trimmed to remove errors. For even greater flexibility, the device is divided into four groups of eight DACs. Two offset DACs allow the output ...More

AD5373:  32-Channel, 14-Bit, Serial Input, Voltage-Output DAC

Product Description

The AD5372/AD5373 contain 32, 16-bit or 14-bit digital-to-analog converters (DACs) in a single 64-lead LQFP. The devices provide buffered voltage outputs with a nominal span of 4× the reference voltage. The gain and offset of each DAC can be inde-pendently trimmed to remove errors. For even greater flexibility, the device is divided into four groups of eight DACs. Two offset DACs allow the output range of the groups to be altered. Group 0 can be adjusted by Offset DAC 0, and Group 1 to Group 3 can be adjusted by Offset DAC 1.

The AD5372/AD5373 offer guaranteed operation over a wide supply range: VSS from −16.5 V to −4.5 V and VDD from 9 V to 16.5 V. The output amplifier headroom requirement is 1.4 V operating with a load current of 1 mA.

The ADAD5372/AD5373 have a high-speed serial inter- face, which is compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards and can handle clock speeds of up to 50 MHz.

The DAC registers are updated on reception of new data. All the outputs can be updated simultaneously by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register.

Each DAC output is gained and buffered on-chip with respect to an external SIGGNDx input. The DAC outputs can also be switched to SIGGNDx via the CLR pin.

Applications

  • Level setting in automatic test equipment (ATE)
  • Variable optical attenuators (VOA)
  • Optical switches
  • Industrial control systems
  • Instrumentation

    • Data Sheet, Rev. B, 03/08

    RESOURCES & TOOLS

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    • 32-channel DAC in a 64-lead LQFP
    • AD5372/AD53731 guaranteed monotonic to 16/14 bits
    • Maximum output voltage span of 4 × VREF
      (20 V)
    • Multiple, independent output voltage spans available
    • System calibration function allowing user-programmable offset and gain
    • Clear function to user-defined SIGGNDx
    • Simultaneous update of DAC outputs
    • See Data Sheet for Additional Information
    • Resolution (Bits): 14bit
    • DAC Update Rate: 540kSPS
    • DAC Settling Time: 20µs
    • # DAC Outputs: 32
    • DAC Type: Voltage Out
    • DAC Input Format: Ser,SPI
    • Output FSR: (Bip 2Vref),(Uni 4 x VRef)
    • Ref Int/Ext: Ext
    • Supply Vnom: Multi(±15, +2.5Dig) ,Multi(±15, +3.3Dig) ,Multi(±15, +3Dig),Multi(±15, +5Dig)
    • Pwr Diss: 520mW
    • Package: QFP

    Functional Block Diagram for AD5373

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    AD5361 14 540KSPS 20µs 16
    AD5372 16 540KSPS 20µs 32
    AD5535 14 1.2MSPS 65µs 32
    AD5734R 14 1.1MSPS 10µs 4
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    AD9767 14 125MSPS 35ns 2
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.