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AD5648:  Octal, 14-Bit, SPI Voltage Output denseDAC With 5 PPM/°C On-Chip Reference

Product Details


The AD5648 device is a low power, octal, 14-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 AD5648 has an on-chip reference with an internal gain of 2. The AD5648-1 has a 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5648-2, 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 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 AD5648 utilize 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, 14-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

FEATURES and BENEFITS

  • Low power, smallest-pin-compatible octal DACs
    AD5668: 16 bits
    AD5648: 14 bits
    AD5628: 12 bits
  • 16-lead and 14-lead TSSOP
  • 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.
  • 3 power-down functions
  • Hardware LDAC and LDAC override function
  • CLR function to programmable code
  • Rail-to-rail operation

Functional Block Diagram for AD5648

Similar Products

  • AD5308: 2.5 V to 5.5 V Octal Voltage Output 8-Bit DACs in 16-Lead TSSOP
  • AD5318: 2.5 V to 5.5 V Octal Voltage Output 10-Bit DACs in 16-Lead TSSOP
  • AD5328: 2.5 V to 5.5 V Octal Voltage Output 12-Bit DACs in 16-Lead TSSOP
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5 things you don't know about DACs

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD5648 IBIS Model  (ibs) IBIS Models IBS

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD5648 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD5648ARUZ-2 Status: Production 16 ld TSSOP 16 Ind Tube, 96 $10.73 $9.12 Y  Material Info PCN Purchase Sample
AD5648ARUZ-2REEL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $9.12 Y  Material Info PCN Purchase
AD5648BRUZ-1 Status: Production 14 ld TSSOP 14 Ind Tube, 96 $12.34 $10.49 Y  Material Info PCN Purchase Sample
AD5648BRUZ-1REEL7 Status: Production 14 ld TSSOP 14 Ind Reel, 1000 - $10.49 Y  Material Info PCN Purchase
AD5648BRUZ-2 Status: Production 16 ld TSSOP 14 Ind Tube, 96 $12.34 $10.49 Y  Material Info PCN Purchase Sample
AD5648BRUZ-2REEL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $10.49 Y  Material Info PCN Purchase
Price Table Help

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.

AD5668 Evaluation Board- LFCSP/TSSOP
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD5668SDCZ Status: Production LFCSP Evaluation Board $59.00 Yes -
EVAL-AD5668SDRZ Status: Production TSSOP Evaluation Board $59.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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