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AD704:  Picoampere Input Current Quad Bipolar Op Amp

Product Details

Newer Alternatives:
  • AD8624 with lower power and smaller package options.

The AD704 is a quad, low power bipolar op amp that has the low input bias current of a BiFET amplifier and offers a signifi-cantly lower IB drift over temperature. It uses superbeta bipolar input transistors to achieve picoampere input bias current levels (similar to FET input amplifiers at room temperature), while its IB typically increases only by 5× at 125°C (unlike a BiFET amp, for which IB doubles every 10°C, resulting in a 1000× increase at 125°C). In addition, the AD704 achieves 150 μV offset voltage and the low noise characteristics of a precision bipolar input op amp.

Because it has only 1/20 the input bias current of an OP07, the AD704 does not require the commonly used balancing resistor. Furthermore, the current noise is 1/5 that of the OP07, which makes the AD704 usable with much higher source impedances. At 1/6 the supply current (per amplifier) of the OP07, the AD704 is better suited for today’s higher density circuit boards and battery-powered applications.

The AD704 is an excellent choice for use in low frequency active filters in 12- and 14-bit data acquisition systems, in precision instrumentation, and as a high quality integrator. The AD704 is internally compensated for unity gain stability. The AD704J is rated over the commercial temperature range of 0°C to 70°C. The AD704A is rated over the industrial temperature of −40°C to +85°C. The AD704S is rated over the military temperature range of −55°C to +125°C, processed to MIL-STD-883B.


  • Industrial/process controls
  • Weigh scales
  • ECG/EKG instrumentation
  • Low frequency active filters


  • High dc precision
    150 μV maximum offset voltage
    1.5 μV/°C maximum offset voltage drift
    270 pA maximum input bias current
    0.3 pA/°C typical IB drift
  • Low noise: 0.5 μV p-p
  • Typical noise: 0.1 Hz to 10 Hz
  • Low power: 600 μA maximum supply current per amplifier
  • Dual version: AD706

Pin Configuration Diagram for AD704

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

AD704 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD704AR-16 Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $6.16 $5.54 N  Material Info PCN Purchase
AD704AR-16-REEL Status: Production 16 ld SOIC - Wide 16 Ind Reel, 1000 - $5.54 N  Material Info PCN Purchase
AD704ARZ-16 Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $5.43 $4.88 Y  Material Info PCN Purchase
AD704ARZ-16-REEL Status: Production 16 ld SOIC - Wide 16 Ind Reel, 1000 - $4.88 Y  Material Info PCN Purchase
AD704JNZ Status: Production 14 ld PDIP 14 Comm. Tube, 25 $5.04 $4.54 Y  Material Info PCN Purchase
AD704JRZ-16 Status: Production 16 ld SOIC - Wide 16 Comm. Tube, 47 $5.04 $4.54 Y  Material Info PCN Purchase
AD704JRZ-16-REEL Status: Production 16 ld SOIC - Wide 16 Comm. Reel, 1000 - $4.54 Y  Material Info PCN Purchase
AD704SE/883B Status: Production 20 ld LCC 20 Mil Tube, 54 $104.02 $98.83 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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