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DAC8248:  Dual 12-Bit (8-Bit Byte) Double-Buffered CMOS D/A Converter

Product Details


The DAC-8248 is a dual 12-bit, double-buffered, CMOS digital-to-analog converter. It has an 8-bit wide input data port that interfaces directly with 8-bit microprocessors. It loads a 12-bit word in two bytes using a single control; it can accept either a least significant byte or most significant byte first. For designers with a 12-bit or 16-bit wide data path, choose the DAC-8222 or DAC-8221.

The DAC-8248's double-buffered digital inputs allow both DAC's analog output to be updated simultaneously. This is particularly useful in multiple DAC systems where a common LDAC signal updates all DACs at the same time. A single RESET pin resets both outputs to zero.

The DAC-8248's monolithic construction offers excellent DAC-to-DAC matching and tracking over the full operating temperature range. The DAC consists of two thin-film R-2R resistor ladder networks, two 12-bit, two 8-bit, and two 4-bit data registers, and control logic circuitry. Separate reference input and feedback resistors are provided for each DAC. The DAC8248 operates on a single supply from +5 V to +15 V, and it dissipates less than 0.5 mW at +5 V (using zero or VDD logic levels). The device is packaged in a space-saving 0.3", 24-pin DIP.

The DAC-8248 is manufactured with PMI's highly-stable thin-film resistors on an advanced oxide-isolated, silicon-gate, CMOS technology. PMI's improved latch-up resistant design eliminates the need for external protective Schoottky diodes.

FEATURES and BENEFITS

  • Two Matched 12-Bit DACs on One Chip
  • 12-Bit Resolution wth an 8-Bit Data Bus
  • Direct Interface with 8-Bit Microprocessors
  • Double-Buffered Digital Inputs
  • RESET to Zero Pin
  • 12-Bit Endpoint Linearity (±1/2 LSB) Over Temperature
  • +5 V to 15 V Single Supply Operation
  • Latch-Up Resistant
  • Improved ESD Resistance
  • Packaged in a Narrow 0.3" 24-Pin
    DIP and 0.3" 24-Pin SOL Package
  • Available in Die Form

Functional Block Diagram for DAC8248

Similar Products

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Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

DAC8248 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
DAC8248FP Status: Production 24 ld PDIP 24 Tube, 15 $21.80 $19.71 N  Material Info PCN Purchase
DAC8248FPZ Status: Production 24 ld PDIP 24 Tube, 15 $19.86 $17.95 Y  Material Info PCN Purchase
DAC8248FS Status: Production 24 ld SOIC - Wide 24 Tube, 31 $26.70 $24.14 N  Material Info PCN Purchase
DAC8248FSZ Status: Production 24 ld SOIC - Wide 24 Tube, 31 $24.33 $21.99 Y  Material Info PCN Purchase
DAC8248FSZ-REEL Status: Production 24 ld SOIC - Wide 24 Reel, 1000 - $21.99 Y  Material Info PCN Purchase
DAC8248GPZ Status: Production 24 ld PDIP 24 Tube, 15 $30.05 $27.18 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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