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AD5641:  2.7 V to 5.5 V, <100 µA, 14-Bit nanoDAC®, SPI Interface in LFCSP and SC70

Product Details


The AD5641, a member of the nanoDAC® family, is a single, 14-bit, buffered, voltage-out DAC that operates from a single 2.7 V to 5.5 V supply, typically consuming 75 μA at 5 V. The part comes in a tiny LFCSP and SC70 packages. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5641 uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The reference for AD5641 is derived from the power supply inputs and, therefore, gives the widest dynamic output range. The part incorporates a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains there until a valid write to the device takes place.

The AD5641 contains a power-down feature that reduces current consumption typically to 0.2 μA at 3 V, and provides software-selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface. The low power consumption of the part in normal operation makes it ideally suited to portable battery-operated equipment. The combination of small package and low power makes this nanoDAC device ideal for level-setting requirements such as generating bias or control voltages in space-constrained and power-sensitive applications.

Product Highlights
  • Available in a space-saving, 6-lead LFCSP and SC70 packages.
  • Low power, single-supply operation. The AD5641 operates from a single 2.7 V to 5.5 V supply and with a maximum current consumption of 100 μA, making it ideal for battery-powered applications.
  • The on-chip output buffer amplifier allows the output of the DAC to swing rail-to-rail with a typical slew rate of 0.5 V/μs.
  • Reference derived from the power supply.
  • High speed serial interface with clock speeds up to 30 MHz. Designed for very low power consumption. The interface powers up only during a write cycle.
  • Power-down capability. When powered down, the DAC typically consumes 0.2 μA at 3 V.
  • Power-on reset with brownout detection.
Applications
  • Voltage level setting
  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Programmable attenuators

FEATURES and BENEFITS

  • 6-lead LFCSP and SC70 packages
  • Micropower operation: 100 μA maximum at 5 V
  • Power-down to typically 0.2 μA at 3 V
  • Single 14-bit DAC
  • B version: ±4 LSB INL
  • A version: ±16 LSB INL
  • 2.7 V to 5.5 V power supply
  • Guaranteed monotonic by design
  • Power-on reset to 0 V with brownout detection
  • 3 power-down functions
  • Low power serial interface with Schmitt-triggered inputs
  • On-chip output buffer amplifier, rail-to-rail operation
  • SYNC interrupt facility

Functional Block Diagram for AD5641

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Documentation

Title Content Type File Type
AD5641: 2.7 V to 5.5 V, <100 µA, 14-Bit nanoDAC, SPI Interface in LFCSP and SC70 Data Sheet  (Rev D, 02/2012) (pdf, 554 kB) Data Sheets PDF
Voltage Level Setting Requirements in RF Power Control Circuits
by James Caffrey, Analog Devices, Inc. (ECN, 6/1/2004)
Technical Articles HTML
Thinking inside the box - the future of converter designs?
(eeProductCenter Review, 7/12/04)
Product Reviews HTML
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Solutions Bulletins PDF
Extending the nanoDAC Family Overview HTML
Analog Devices’ 8-Bit to 16-Bit nanoDAC™ Converters  (pdf, 340 kB)
... Highest performance in the industry’s smallest packaging.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD5641 IBIS Model  (ibs) IBIS Models IBS
AD5446 IIO DAC Linux Driver (Wiki Site) Device Drivers HTML
AD5791 IIO DAC Linux Driver (Wiki Site) Device Drivers HTML

Evaluation Kits & Symbols & Footprints

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.

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Price, packaging, availability

AD5641 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD5641ACPZ-REEL7 Status: Production 6 ld LFCSP (3x2 w/1.6x1.4ep) 6 Ind Reel, 3000 - $1.73 Y  Material Info PCN Purchase
AD5641AKSZ-500RL7 Status: Production 6 ld SC70 6 Ind Reel, 500 - $1.73 Y  Material Info PCN Purchase Sample
AD5641AKSZ-REEL7 Status: Production 6 ld SC70 6 Ind Reel, 3000 - $1.73 Y  Material Info PCN Purchase Sample
AD5641BKSZ-500RL7 Status: Production 6 ld SC70 6 Ind Reel, 500 - $1.99 Y  Material Info PCN Purchase Sample
AD5641BKSZ-REEL7 Status: Production 6 ld SC70 6 Ind Reel, 3000 - $1.99 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.


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