Add to Signal Chain Designer

AD7834:  LC2MOS Quad 14-Bit DAC

Product Details


Newer Alternatives:
  • AD5734R Complete, Quad, 14-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference
  • AD5754 Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DAC
  • AD5754R Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference

The AD7834 and AD7835 contain four 14-bit DACs on one monolithic chip. The AD7834 and AD7835 have output voltages in the range ±8.192 V with a maximum span of 14 V.

The AD7834 is a serial input device. Data is loaded in 16-bit format from the external serial bus, MSB first after two leading 0s, into one via DIN, SCLK, and FSYNC. The AD7834 has five dedicated package address pins, PA0 to PA4, that can be wired to AGND or VCC to permit up to 32 AD7834s to be individually addressed in a multipackage application.

The AD7835 can accept either 14-bit parallel loading or double-byte loading, where right-justified data is loaded in one 8-bit byte and one 6-bit byte. Data is loaded from the external bus into one of the input latches under the control of the WR, CS, BYSHF, and DAC channel address pins, A0 to A2.

With each device, the LDAC signal is used to update all four DAC outputs simultaneously, or individually, on reception of new data. In addition, for each device, the asynchronous CLR input can be used to set all signal outputs, VOUT1 to VOUT4, to the user-defined voltage level on the device sense ground pin, DSG. On power-on, before the power supplies have stabilized, internal circuitry holds the DAC output voltage levels to within ±2 V of the DSG potential. As the supplies stabilize, the DAC output levels move to the exact DSG potential (assuming CLR is exercised).

The AD7834 is available in a 28-lead 0.3" SOIC package and a 28-lead 0.6" PDIP package, and the AD7835 is available in a 44-lead MQFP package and a 44-lead PLCC package.

Applications

  • Process control
  • Automatic test equipment
  • General-purpose instrumentation

FEATURES and BENEFITS

  • Four 14-bit DACs in one package
  • AD7834—serial loading
  • AD7835—parallel 8-bit/14-bit loading
  • Voltage outputs
  • Power-on reset function
  • Maximum/minimum output voltage range of ±8.192 V
  • Maximum output voltage span of 14 V
  • Common voltage reference inputs
  • User-assigned device addressing
  • Clear function to user-defined voltage
  • Surface-mount packages
  • Packages:
    AD7834—28-lead SOIC and PDIP
    AD7835—44-lead MQFP and PLCC

Functional Block Diagram for AD7834

Similar Products

  • AD5734R Complete, Quad, 14-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference
  • AD5754 Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DAC
  • AD5754R Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference

Documentation

Title Content Type File Type
AD7834/AD7835: LC2MOS Quad 14-Bit DACs Data Sheet  (Rev D, 08/2007) (pdf, 1451 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.

SampleSample & Buy

Price, packaging, availability

AD7834 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7834AN Status: Production 28 ld PDIP 28 Ind Tube, 13 $31.48 $26.75 N  Material Info PCN Purchase
AD7834ANZ Status: Production 28 ld PDIP 28 Ind Tube, 13 $28.67 $24.37 Y  Material Info PCN Purchase
AD7834AR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $30.56 $25.97 N  Material Info PCN Purchase
AD7834ARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $27.83 $23.66 Y  Material Info PCN Purchase Sample
AD7834ARZ-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $23.66 Y  Material Info PCN Purchase
AD7834BR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $38.62 $32.82 N  Material Info PCN Purchase
AD7834BR-REEL Status: Last Time Buy 28 ld SOIC - Wide 28 Ind Reel, 1000 - $32.82 N  Material Info PCN/PDN Purchase
AD7834BRZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $35.18 $29.90 Y  Material Info PCN Purchase
AD7834BRZ-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $29.90 Y  Material Info PCN Purchase
AD7834CNZ Status: Last Time Buy 20 ld PDIP 20 Ind Tube - - Y  Material Info PDN 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.


沪ICP备09046653号
content here.
content here.

Review this Product

Close