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AD7394:  +3/+5V Dual, Serial-Input 12-Bit DAC

Product Details


Newer Alternatives:
  • AD5322: 2.5 V to 5.5 V, 230 µA, Dual Rail-to-Rail Voltage Output 12-Bit DAC in 10-MSOP
  • AD5323: 2.5 V to 5.5 V, 230 µA, Dual Rail-to-Rail Voltage Output 12-Bit DAC in 16-TSSOP

The AD7394/AD7395 family of dual, 12-bit and 10-bit, voltage-output digital-to-analog converters are designed to operate from a single +3 volt supply. These parts offer the lowest power consumption (<200 µA total) for any dual DAC containing an internal buffer. Operation is guaranteed over the supply voltage range of +2.7 V to +5.5 V making these devices ideal for battery operated applications in portable equipment, communications equipment, industrial control, and automotive systems.

The full-scale output voltage is determined by the applied external reference input voltage VREF. The rail-to-rail VREF input to VOUT outputs allow for a full-scale voltage set equal the positive supply VDD or any value in between. Operation from a voltage reference connected to VDD and VREF enables one application where VOUT can be programmed to produce any voltage between ground and VDD, maximizing the output voltage span.

A doubled-buffered serial-data interface offers high-speed, three-wire, SPI and micro controller compatible inputs. Additionally, an RS input sets the output to zero scale or to 1/2 scale based on the logic level applied to the MSB pin. A power shutdown input reduces power dissipation to nano amp current levels. All digital inputs contain Schmitt triggered logic levels to minimize power dissipation and prevent false triggering on the clock input.

Both parts are offered in the same pin out to allow the user to select the amount of resolution appropriate for their application without circuit card redesign.

The AD7394/AD7395 are specified over the extended industrial (-40°C to +85°C) temperature range. Packages available include plastic DIP, and low profile 1.75 mm height SO-14 surface mount packages. The AD7395BRU is available for ultra compact applications in a thin 1.1 mm TSSOP-14 package. For automotive applications, the AD7395YR is specified for operation over the (-40°C to +125°C) temperature range.

FEATURES and BENEFITS

  • Micropower 100µA/DAC
  • 0.1 µA Typical Power Shutdown
  • Single-Supply +2.7 V to +5.5 V Operation
  • Compact 1.1 mm Height TSSOP-14 Package
  • AD7394/12-Bit Resolution
    AD7395/10-Bit Resolution
  • Serial Interface wth Schmitt Trigger Inputs

Functional Block Diagram for AD7394

AD7394 Diagram
Functional Block Diagram for AD7394

Documentation

Title Content Type File Type
AD7394: +3 V Dual, Serial-Input 12-/10-Bit DAC Data Sheet (Rev A, 01/2010) (pdf, 275 kB) Data Sheets PDF
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary 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

AD7394 Model Options
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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