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AD5328:  2.5 V to 5.5 V Octal Voltage Output 12-Bit DACs in 16-Lead TSSOP

The AD5308/AD5318/AD5328 are octal 8-, 10-, and 12-bit buffered voltage output DACs in a 16-lead TSSOP. They operate from a single 2.5 V to 5.5 V supply, consuming 0.7 mA typical at 3 V. Their on-chip output amplifiers allow the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs. The AD5308/ AD5318/AD5328 use a versatile 3-wire serial interface that operates at clock rates up to 30 MHz ...More

AD5328:  2.5 V to 5.5 V Octal Voltage Output 12-Bit DACs in 16-Lead TSSOP

Product Description

The AD5308/AD5318/AD5328 are octal 8-, 10-, and 12-bit buffered voltage output DACs in a 16-lead TSSOP. They operate from a single 2.5 V to 5.5 V supply, consuming 0.7 mA typical at 3 V. Their on-chip output amplifiers allow the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs. The AD5308/ AD5318/AD5328 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.

The references for the eight DACs are derived from two reference pins (one per DAC quad). These reference inputs can be configured as buffered, unbuffered, or VDD inputs. The parts incorporate a power-on reset circuit, which ensures that the DAC outputs power up to 0 V and remain there until a valid write to the device takes place. The outputs of all DACs may be updated simultaneously using the asynchronous LDAC input. The parts contain a power-down feature that reduces the current consumption of the devices to 400 nA at 5 V (120 nA at 3 V). The eight channels of the DAC may be powered down individually.

All three parts are offered in the same pinout, which allows users to select the resolution appropriate for their application without redesigning their circuit board.

Applications

  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Optical networking
  • Automatic test equipment
  • Mobile communications
  • Programmable attenuators
  • Industrial process control

    • Data Sheet, Rev. D, 12/06

    RESOURCES & TOOLS

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    • AD5308: 8 buffered 8-bit DACs in 16-lead TSSOP A version: ±1 LSB INL, B version: ±0.75 LSB INL
    • AD5318: 8 buffered 10-bit DACs in 16-lead TSSOP A version: ±4 LSB INL, B version: ±3 LSB INL
    • AD5328: 8 buffered 12-bit DACs in 16-lead TSSOP A version: ±16 LSB INL, B version: ±12 LSB INL
    • Low power operation: 0.7 mA @ 3 V
    • Power-down to 120 nA @ 3 V, 400 nA @ 5 V
    • Double-buffered input logic
    • Guaranteed monotonic by design over all codes
    • Buffered/unbuffered/VDD reference input options
    • Output range: 0 V to VREF or 0 V to 2 VREF
    • Power-on reset to 0 V
    • Programmability
      Individual channel power-down
      Simultaneous update of outputs (LDAC)
    • Low power, SPI-®, QSPI-™, MICROWIRE-™, and DSP-compatible 3-wire serial interface
    • Resolution (Bits): 12bit
    • DAC Update Rate: 167kSPS
    • DAC Settling Time: 6µs
    • # DAC Outputs: 8
    • DAC Type: Voltage Out
    • DAC Input Format: Ser,SPI
    • Output FSR: (Uni 2Vref),(Uni Vref)
    • Ref Int/Ext: Ext
    • Supply Vnom: Single(+2.5),Single(+2.7),Single(+3),Single(+3.3),Single(+5)
    • Pwr Diss: 4.5mW
    • Package: SOP

    Functional Block Diagram for AD5328

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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.