1. Products
  2. D/A Converters (DAC)
  3. Precision D/A Converters
  4. Voltage Output D/A Converters
  5. Multichannel Voltage Output D/A Converters
  6. AD7228A


Features and Benefits

  • Eight 8-Bit DACs with Output Amplifiers
  • Operates with Single +5 V, +12 V or +15 V or Dual Supplies
  • µP Compatible (95 ns WR Pulse)
  • No User Trims Required
  • Skinny 24-Pin DlPs, SOIC, and 28-Terminal Surface Mount Packages

Product Details

The AD7228A contains eight 8-bit voltage-mode digital-to-analog converters, with output buffer amplifiers and interface logic on a single monolithic chip. No external trims are required to achieve full specified performance for the part.

Separate on-chip latches are provided for each of the eight D/A converters. Data is transferred into the data latches through a common 8-bit TTL/CMOS (5 V) compatible input port. Address inputs A0, A1 and A2 determine which latch is loaded when WR goes low. The control logic is speed compatible with most 8-bit microprocessors.

Specified performance is guaranteed for input reference voltages from +2 to +10 V when using dual supplies. The part is also specified for single supply +15 V operation using a reference of +10 V and single supply +5 V operation using a reference of +1.23 V. Each output buffer amplifier is capable of developing +10 V across a 2 kΩ load.

The AD7228A is fabricated on an all ion-implanted, high-speed, Linear Compatible CMOS (LC2MOS) process which has been specifically developed to integrate high-speed digital logic circuits and precision analog circuits on the same chip.

Product Highlights

  1. Eight DACs and Amplifiers in Small Package
    The single-chip design of eight 8-bit DACs and amplifiers allows a dramatic reduction in board space requirements and offers increased reliability in systems using multiple converters. Its pinout is aimed at optimizing board layout with all analog inputs and outputs at one side of the package and all digital inputs at the other.
  2. Single or Dual Supply Operation
    The voltage-mode configuration of the DACs allows single supply operation of the AD7228A. The part can also be operated with dual supplies giving enhanced performance for some parameters.
  3. Microprocessor Compatibility
  4. The AD7228A has a common 8-bit data bus with individual DAC latches, providing a versatile control architecture for simple interface to microprocessors. All latch enable signals are level triggered and speed compatible with most high performance 8-bit microprocessors.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD7228ABNZ Material Declaration Reliability Data 24-Lead PDIP
AD7228ABPZ Material Declaration Reliability Data 28-Lead PLCC
AD7228ABPZ-REEL Material Declaration Reliability Data 28-Lead PLCC
AD7228ABRZ Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7228ABRZ-REEL Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7228ACNZ Material Declaration Reliability Data 24-Lead PDIP
AD7228ACPZ Material Declaration Reliability Data 28-Lead PLCC
AD7228ACPZ-REEL Material Declaration Reliability Data 28-Lead PLCC
AD7228ACQ Material Declaration Reliability Data 24-Lead CerDIP (Narrow 0.3 Inch)
AD7228ACRZ Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7228ACRZ-REEL Material Declaration Reliability Data 24-Lead SOIC (Wide)
Wafer Fabrication Data

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Buy Now Pricing

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List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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