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DAC8221:  Dual 12-Bit Buffered Multiplying CMOS D/A Converter

Product Details


The DAC-8221 combines two identical 12-bit, multiplying, digital-to-analog converters into a single CMOS chip. This device is electrically similar to DAC-8212 with improved microprocessor interface timing and is packaged in a narrow 0.300" DIP. Monolithic construction offers excellent DAC-to-DAC matching and tracking over the full ioperating temperature range. The DAC-8221 consists of two thin-film R-2R resistor-ladder networks, two 12-bit data latches, one 12-bit input buffer, and control logic. The DAC-8221 operates on a single supply from +5V to +15V. Maximum power dissipation with 0V and +5V logic levels and a +5V supply is less than 0.5mW. The DAC-8221 is manufactured using PMI's highly-stable, thin film resistors on an advanced oxide-isolated, silicon-gate, CMOS process. PMI's improved latch-up resistant design eliminates the need for external protective Schottky diodes.

A common 12-bit (TTL/CMOS compatible) input port is used to load a 12-bit-wide word into either of the two DACs. This port, whose data loading is similar to that of a RAM's write cycle, interfaces directly with most 12-bit or wider bus systems. With WR and CS lines at logic LOW, the input data registers are transparent. This allows direct unbuffered data to flow directly to the DAC output selected by DAC A/DAC B control input.

FEATURES and BENEFITS

  • Two Matched 12-Bit DACs on One Chip
  • Packaged in a Narrow 0.3" 24-Pin DIP
  • Direct Parallel Load of all 12 Bits for High Data Throughput
  • 12-Bit Endpoint Linearity (±1/2 LSB Over Temperature)
  • On-Chip Latches for Both DACs
  • +5V to +15V Single Supply Operation
  • DACs Matched to 0.2% Typically
  • Four-Quadrant Multiplication
  • Improved ESD Resistance
  • Available in Die Form

Functional Block Diagram for DAC8221

Similar Products

  • AD5405 Dual 12-Bit, High Bandwidth, Multiplying DAC with 4 Quadrant Resistors and Parallel Interface
  • AD5415 Dual 12-Bit, High Bandwidth, Multiplying DAC with 4 Quadrant Resistors and Serial Interface
  • AD5447 Dual 12-Bit, High Bandwidth Multiplying DACs with Parallel Interface
  • AD5449 Dual 12-Bit, High Bandwidth Multiplying DAC with Serial Interface

Documentation

Title Content Type File Type
DAC8221: Military Data Sheet  (Rev B, 11/2001) (pdf) Data Sheets PDF
DAC8221: Dual 12-Bit Buffered Multiplying CMOS D/A Converter Data Sheet  (Rev B, 10/2002) (pdf, 597 kB) Data Sheets PDF
AN-254: Add Programmable Gain, Attenuation  (pdf, 97 kB)
Simple CMOS Multiplying DAC Circuit Provides Digital Control of Gain and Attenuation of Analog Signal
Application Notes PDF
ADI Warns Against Misuse of COTS Integrated Circuits  (pdf, 13 kB)
(Revised 1/03)
Invites Customer Participation in Creative Mil/Aero System Solutions
Recommended Reading 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

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Price, packaging, availability

DAC8221 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-8967101LA Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $103.28 $93.35 N  Material Info PCN Purchase
DAC8221AW/883C Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $103.28 $93.35 N  Material Info PCN Purchase
DAC8221FP Status: Production 24 ld PDIP 24 Tube, 15 $20.30 $20.30 N  Material Info PCN Purchase
DAC8221FPZ Status: Production 24 ld PDIP 24 Tube, 15 $18.49 $18.49 Y  Material Info PCN Purchase
DAC8221FSZ Status: Production 24 ld SOIC - Wide 24 Tube, 31 $24.08 $21.78 Y  Material Info PCN Purchase
DAC8221GP Status: Production 24 ld PDIP 24 Tube, 15 $30.66 $30.66 N  Material Info PCN Purchase
DAC8221GPZ Status: Production 24 ld PDIP 24 Tube, 15 $29.32 $29.32 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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