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AD7837:  LC2MOS Complete, Dual 12-Bit MDAC, (8 + 4) Loading Structure

Product Details


Newer Alternatives:
  • AD5722R Complete, Dual, 12-Bit, Unipolar/Bipolar, Voltage Output DAC with Internal Reference

The AD7837/AD7847 is a complete, dual, 12-bit multiplying digital-to-analog converter with output amplifiers on a monolithic CMOS chip. No external user trims are required to achieve full specified performance.

Both parts are microprocessor compatible, with high speed data latches and interface logic. The AD7847 accepts 12-bit parallel data which is loaded into the respective DAC latch using the WR input and a separate Chip Select input for each DAC. The AD7837 has a double-buffered 8-bit bus interface structure with data loaded to the respective input latch in two write operations. An asynchronous LDAC signal on the AD7837 updates the DAC latches and analog outputs.

The output amplifiers are capable of developing ±10 V across a 2 kOhm load. They are internally compensated with low input offset voltage due to laser trimming at wafer level.

The amplifier feedback resistors are internally connected to VOUT on the AD7847.

The AD7837/AD7847 is fabricated in Linear Compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic.

A novel low leakage configuration (U.S. Patent No. 4,590,456) ensures low offset errors over the specified temperature range.

FEATURES and BENEFITS

  • Two 12-Bit MDACs with Output Amplifiers
  • Space-Saving 0.3", 24-Lead DIP an 24-Terminal SOIC Package
  • 4-Quadrant Multiplication
  • Parallel Loading Structure: AD7847
  • (8+4) Loading Structure: AD7837

Functional Block Diagram for AD7837

Similar Products

  • AD5722R Complete, Dual, 12-Bit, Unipolar/Bipolar, Voltage Output DAC with Internal Reference
  • AD5732R Complete, Dual, 14-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference
  • AD5752R Complete, Dual, 16-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference

Documentation

Title Content Type File Type
AD7837/AD7847: LC2MOS Complete, Dual 12-Bit MDACs Data Sheet  (Rev C, 08/2000) (pdf, 187 kB) Data Sheets PDF
Space Qualified Parts List  (pdf, 93 kB)
This document lists 67 (240+) space level products that are available from Analog Devices. Many of the products listed are state-of-the-art data conversion and signal processing products that were previously only available as commercial or military Class B products. Through our Space Products Group and MIL-PRF-38535 certified Level V (Class S) facility, we are pleased to offer these products to the space marketplace.
Aerospace Information 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

AD7837 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-9451801MLA Status: Production CERDIP GLASS SEAL 24 Mil Tube, 15 $84.86 $76.71 N  Material Info PCN Purchase
AD7837ACHIPS Status: Last Time Buy CHIPS OR DIE 0 Comm. Tray, 100 $21.71 $21.71 Y  Material Info PDN Purchase
AD7837AN Status: Production 24 ld PDIP 24 Ind Tube, 15 $19.87 $16.89 N  Material Info PCN Purchase
AD7837ANZ Status: Production 24 ld PDIP 24 Ind Tube, 15 $17.20 $14.59 Y  Material Info PCN Purchase
AD7837AQ Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $23.51 $23.51 N  Material Info PCN Purchase
AD7837AR Status: Production 24 ld SOIC - Wide 24 Ind Tube, 31 $19.29 $16.40 N  Material Info PCN Purchase
AD7837AR-REEL Status: Production 24 ld SOIC - Wide 24 Ind Reel, 1000 - $16.40 N  Material Info PCN Purchase
AD7837ARZ Status: Production 24 ld SOIC - Wide 24 Ind Tube, 31 $16.70 $14.20 Y  Material Info PCN Purchase
AD7837ARZ-REEL Status: Production 24 ld SOIC - Wide 24 Ind Reel, 1000 - $14.20 Y  Material Info PCN Purchase
AD7837BN Status: Production 24 ld PDIP 24 Ind Tube, 15 $23.30 $19.79 N  Material Info PCN Purchase
AD7837BNZ Status: Production 24 ld PDIP 24 Ind Tube, 15 $20.18 $17.14 Y  Material Info PCN Purchase
AD7837BQ Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $27.47 $27.47 N  Material Info PCN Purchase
AD7837BRZ Status: Production 24 ld SOIC - Wide 24 Ind Tube, 31 $19.59 $16.65 Y  Material Info PCN Purchase
AD7837SCHIPS Status: Last Time Buy CHIPS OR DIE 0 Comm. Tray, 100 $55.83 $55.83 Y  Material Info PDN Purchase
AD7837SQ Status: Production CERDIP GLASS SEAL 24 Mil Tube, 15 $54.17 $54.17 N  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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