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AD5323:  2.5 V to 5.5 V, 230 µA, Dual Rail-to-Rail Voltage Output 12-Bit DAC

The AD5303/AD5313/AD5323* are dual 8-/10-/12-bit buffered voltage output DACs in a 16-lead TSSOP package that operate from a single 2.5 V to 5.5 V supply, consuming 230 μA 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 AD5303/AD5313/AD5323 utilize a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is ...More

AD5323:  2.5 V to 5.5 V, 230 µA, Dual Rail-to-Rail Voltage Output 12-Bit DAC

Product Description

The AD5303/AD5313/AD5323* are dual 8-/10-/12-bit buffered voltage output DACs in a 16-lead TSSOP package that operate from a single 2.5 V to 5.5 V supply, consuming 230 μA 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 AD5303/AD5313/AD5323 utilize 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 two DACs are derived from two reference pins (one per DAC). These reference inputs may be configured as buffered or unbuffered 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. There is also an asynchronous active low CLR pin that clears both DACs to 0 V. The outputs of both 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 200 nA at 5 V (50 nA at 3 V) and provides software-selectable output loads while in power-down mode. The parts may also be used in daisy-chaining applications using the SDO pin.

The low power consumption of these parts in normal operation makes them ideally suited to portable battery-operated equipment. The power consumption is 1.5 mW at 5 V and 0.7 mW at 3 V, reducing to 1 μW in power-down mode.

Applications

  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Programmable attenuators

    • *Protected by U.S. Patent No. 5684481; other patents pending.

    RESOURCES & TOOLS

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    • AD5303: 2 buffered 8-bit DACs in 1 package
      A version: ±1 LSB INL, B version: ±0.5
      LSB INL
    • AD5313: 2 buffered 10-bit DACs in 1 package
      A version: ±4 LSB INL, B version: ±2
      LSB INL
    • AD5323: 2 buffered 12-bit DACs in 1 package
      A version: ±16 LSB INL, B version: ±8
      LSB INL
    • 16-lead TSSOP package
    • Power-down to 200 nA @ 5 V, 50 nA @ 3 V
    • Micropower operation: 300 μA @ 5 V (including reference current)
    • 2.5 V to 5.5 V power supply
    • Double-buffered input logic
    • Guaranteed monotonic by design over all codes
    • Buffered/unbuffered reference input options
    • Output range: 0 V to VREF or 0 V to 2 VREF
    • Power-on-reset to 0 V
    • Resolution (Bits): 12bit
    • DAC Update Rate: 125kSPS
    • DAC Settling Time: 8µs
    • # DAC Outputs: 2
    • 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: 2.5mW
    • Package: SOP

    Functional Block Diagram for AD5323

    OF NOTE ...

    See also AD5322 in 10-lead MicroSOIC package.

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    AD7249 12 125KSPS 7µs 2
    AD5399 12 1.25MSPS 800ns 2
    AD5405 12 21.3MSPS 80ns 2
    AD5415 12 2.47MSPS 120ns 2
    AD7847 12 250KSPS 4µs 2
    AD9773 12 400MSPS 11ns 2
    AD5447 12 21.3MSPS 80ns 2
    AD5449 12 2.47MSPS 80ns 2
    AD7237A 12 125KSPS 8µs 2
    AD5342 12 125KSPS 8µs 2
    AD5343 12 125KSPS 8µs 2
    AD5623R 12 287KSPS 3µs 2
    AD5627 12 333KSPS 3µs 2
    AD5627R 12 333KSPS 3µs 2
    AD7547 12 667KSPS 1.5µs 2
    AD5322 12 125KSPS 8µs 2
    AD5323 12 125KSPS 8µs 2
    AD9765 12 125MSPS 35ns 2
    AD7837 12 250KSPS 4µs 2
    AD5722R 12 1.07MSPS 7.5µs 2
    AD7247A 12 125KSPS 8µs 2
    AD7549 12 667KSPS 1.5µs 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.