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AD5668:  OCTAL, 16-BIT, SPI VOLTAGE OUTPUT DENSEDAC WITH 5 PPM/°C ON-CHIP REFERENCE

New 4x4 16-LFCSP Package Option Available

The AD5668 device is a low power, octal, 16-bit, buffered voltage-output DAC. The device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.

The AD5668 has an on-chip reference with an internal gain of 2. The AD5668-1 has an 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5668-2, -3 has a 2.5 V 5 ppm/°C reference, giving a ...More

AD5668:  OCTAL, 16-BIT, SPI VOLTAGE OUTPUT DENSEDAC WITH 5 PPM/°C ON-CHIP REFERENCE

Product Description

The AD5668 device is a low power, octal, 16-bit, buffered voltage-output DAC. The device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.

The AD5668 has an on-chip reference with an internal gain of 2. The AD5668-1 has an 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5668-2, -3 has a 2.5 V 5 ppm/°C reference, giving a full-scale output range of 5 V. The on-board reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write.

The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V (AD5668-1, -2) or midscale (AD5668-3) and remains powered up at this level until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 400 nA at 5 V and provides software-selectable output loads while in power-down mode for any or all DAC channels.

The outputs of all DACs can be updated simultaneously using the LDAC function, with the added functionality of user-selectable DAC channels to simultaneously update. There is also an asynchronous CLR that updates all DACs to a user-programmable code—zero scale, midscale, or full scale.

The AD5668 utilizes a versatile 3-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing.

Product Highlights

  1. Octal, 16-bit DAC.
  2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference.
  3. Available in 14-lead/16-lead TSSOP.
  4. Power-on reset to 0 V or midscale.
  5. Power-down capability. When powered down, the DAC typically consumes 200 nA at 3 V and 400 nA at 5 V.

Applications

  • Optical transceivers
  • Power Amp control
  • Data acquisition systems
  • Digital gain and offset adjustment

RESOURCES & TOOLS

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EVALUATION BOARDS & DEVELOPMENT KITS

  • Low power, smallest-pin-compatible octal DAC
    AD5668: 16 bits
    AD5648: 14 bits
    AD5628: 12 bits
  • 16-lead and 14-lead TSSOP
    4mm X 4mm 16-lead LFCSP
  • On-chip 1.25 V/2.5 V, 5 ppm/°C reference
  • Power down to 400 nA @ 5 V, 200 nA @ 3 V
  • 2.7 V to 5.5 V power supply Guaranteed monotonic by design
  • Power-on reset to zero scale or midscale
  • 3 power-down functions
  • Hardware LDAC and LDAC override function
  • CLR function to programmable code
  • Rail-to-rail operation
  • Resolution (Bits): 16bit
  • DAC Update Rate: 95kSPS
  • 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: Int/Ext
  • Supply Vnom: Single(+2.7 to +5.5),Single(+2.7),Single(+3),Single(+3.3),Single(+5)
  • Pwr Diss: 2.15mW
  • Package: SOP

Functional Block Diagram for AD5668

OF NOTE....

Please note the AD5668 in LFCSP is not yet released to Manufacturing. For further information on this new package option please contact the DAC Team.

Pricing, Packaging & Availability

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Model
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Status
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  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*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.