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AD706:  Picoampere Input Current Dual Bipolar Op Amp

Product Details


Newer Alternatives:
  • AD8622 with lower supply current, lower noise and rail-to-rail output with smaller package availability.

The AD706 is a dual, low power, bipolar op amp that has the low input bias current of a BiFET amplifier but which offers a significantly lower IB drift over temperature. It utilizes superbeta bipolar input transistors to achieve picoampere input bias current levels (similar to FET input amplifiers at room temperature), while its IB typically only increases by 5×at 125°C (unlike a BiFET amp, for which IB doubles every 10°C for a 1000x increase at 125°C). The AD706 also achieves the microvolt off-set voltage and low noise characteristics of a precision bipolar input amplifier.

Since it has only 1/20 the input bias current of an OP07, the AD706 does not require the commonly used "balancing" resistor. Furthermore, the current noise is 1/5 that of the OP07 which makes this amplifier usable with much higher source impedances. At 1/6 the supply current (per amplifier) of the OP07, the AD706 is better suited for today's higher density boards.

The AD706 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 AD706 is internally compensated for unity gain and is available in five performance grades. The AD706J and AD706K are rated over the commercial temperature range of 0°C to +70°C. The AD706A and AD706B are rated over the industrial temperature range of -40°C to +85°C.

The AD706 is offered in three varieties of an 8-pin package: plastic mini-DIP, hermetic cerdip and surface mount (SOIC). "J" grade chips are also available.

FEATURES and BENEFITS

  • High DC Precision
  • 100 µV Max Offset Voltage
  • 1.5 µV/°C Max Offset Drift
  • 200 pA Max Input Bias Current
  • 0.5 µV p-p Voltage Noise, 0.1 Hz to 10 Hz
  • 750 µA Supply Current
  • Available in 8-Lead Plastic Mini-DlP
    and Surface-Mount (SOIC) Packages
  • Available in Tape and Reel in
    Accordance with EIA-481A Standard
  • Quad Version: AD704

Pin Configuration Diagram for AD706

AD706 Diagram
Pin Configuration Diagram for AD706

Documentation

Title Content Type File Type
AD706: Dual Picoampere Input Current BiPolar Op Amp Data Sheet  (Rev E, 10/2003) (pdf, 224 kB) Data Sheets PDF
Ask The Applications Engineer-25
Op Amps Driving Capacitive Loads

(Analog Dialogue, Vol. 31, No. 2, 1997)
Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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Price, packaging, availability

AD706 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD706AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.53 $3.18 N  Material Info Notify Me Purchase
AD706AR-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $3.18 N  Material Info PDN Purchase
AD706ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.11 $2.80 Y  Material Info Notify Me Purchase
AD706ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.80 Y  Material Info Notify Me Purchase
AD706ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.80 Y  Material Info Notify Me Purchase
AD706JNZ Status: Production 8 ld PDIP 8 Comm. Tube, 50 $2.89 $2.61 Y  Material Info PCN Purchase
AD706JR Status: Production 8 ld SOIC 8 Comm. Tube, 98 $3.11 $2.80 N  Material Info PDN Purchase
AD706JR-REEL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 - $2.80 N  Material Info PDN Purchase
AD706JR-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 1000 - $2.80 N  Material Info PDN Purchase
AD706JRZ Status: Production 8 ld SOIC 8 Comm. Tube, 98 $2.74 $2.48 Y  Material Info Notify Me Purchase
AD706JRZ-REEL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 - $2.48 Y  Material Info Notify Me Purchase
AD706JRZ-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 1000 - $2.48 Y  Material Info Notify Me 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.

EVAL-OPAMP-2 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-2CPZ Status: Production Dual CP-8 lead LFCSP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RMZ Status: Production Dual RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RZ Status: Production Dual R-8 lead SOIC Evaluation Board $20.19 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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