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AD834:  500 MHz Four-Quadrant Multiplier

Product Details


The AD834 is a monolithic, laser-trimmed four-quadrant analog multiplier intended for use in high frequency applications, with a transconductance bandwidth (RL = 50 Ω) in excess of 500 MHz from either of the differential voltage inputs. In multiplier modes, the typical total full-scale error is 0.5%, dependent on the application mode and the external circuitry. Performance is relatively insensitive to temperature and supply variations due to the use of stable biasing based on a band gap reference generator and other design features.

To preserve the full bandwidth potential of the high speed bipolar process used to fabricate the AD834, the outputs appear as a differential pair of currents at open collectors. To provide a single-ended ground referenced voltage output, some form of external current-to-voltage conversion is needed. This may take the form of a wideband transformer, balun, or active circuitry such as an op amp. In some applications (such as power measurement), the subsequent signal processing may not need to have high bandwidth.

The transfer function is accurately trimmed such that when X = Y = ±1 V, the differential output is ±4 mA. This absolute calibration allows the outputs of two or more AD834 devices to be summed with precisely equal weighting, independent of the accuracy of the load circuit.

The AD834J, available in 8-lead PDIP and plastic SOIC packages, is specified over the commercial temperature range of 0°C to 70°C. The AD834A is also available in 8-lead CERDIP and plastic SOIC packages operating over the industrial temperature range of−40°C to +85°C. The AD834SQ/883B, available in an 8-lead CERDIP, operates over the military temperature range of −55°C to +125°C. S-grade chips are also available.

Two application notes featuring the AD834 (AN-212 and AN-216) can be found at www.analog.com. For additional applications circuits, consult the AD811 data sheet.

FEATURES and BENEFITS

  • DC to >500 MHz operation
  • Differential ±1 V full-scale inputs
  • Differential ±4 mA full-scale output current
  • Low distortion (≤0.05% for 0 dBm input)
  • Supply voltages from ±4 V to ±9 V
  • Low power (280 mW typical at VS = ±5 V)

AD834 Functional Block Diagram

Documentation

Title Content Type File Type
AD834: 500 MHz Four-Quadrant Multiplier Data Sheet (Rev F, 06/2012) (pdf, 501 kB) Data Sheets PDF
AN-212: Using the AD834 in DC to 500 MHz Applications:  (pdf, 592 kB)
RMS-to-DC Conversion, Voltage-Controlled Amplifiers, and Video Switches
Application Notes PDF
AN-213: Low Cost, Two-Chip, Voltage -Controlled Amplifier and Video Switch  (pdf, 391 kB) Application Notes PDF
AN-216: Video VCAs and Keyers Using the AD834 and AD811  (pdf, 367 kB) Application Notes 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

AD834 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD834AQ Status: Production 8 ld CerDIP 8 Ind Tube, 48 $40.45 $36.55 N  Material Info PCN Purchase
AD834AR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $21.77 N  Material Info PDN Purchase
AD834AR-REEL7 Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 1000 - $21.77 N  Material Info PDN Purchase
AD834ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $21.31 $19.26 Y  Material Info Notify Me Purchase
AD834ARZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $19.26 Y  Material Info Notify Me Purchase
AD834ARZ-RL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $19.26 Y  Material Info PDN Purchase
AD834JNZ Status: Production 8 ld PDIP 8 Comm. Tube, 50 $20.78 $18.80 Y  Material Info PCN Purchase
AD834JRZ Status: Production 8 ld SOIC 8 Comm. Tube, 98 $19.98 $18.06 Y  Material Info Notify Me Purchase
AD834JRZ-R7 Status: Production 8 ld SOIC 8 Comm. Reel, 750 $19.98 $18.06 Y  Material Info Notify Me Purchase
AD834JRZ-RL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 $19.98 $18.06 Y  Material Info Notify Me Purchase
AD834SQ/883B Status: Production 8 ld CerDIP 8 Mil Tube, 48 $143.22 $129.47 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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