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AD8643:  Low Power, Rail-to-Rail Output, Precision JFET Quad Amplifier

Product Details


The AD8641/AD8642/AD8643 are low power, precision JFET input amplifier featuring low input bias current and rail-to-rail output. The AD8641 family provides high source impedance, low bias current and low supply current which are key to applications such as ECG/EKG monitors, sleep monitoring, and blood analyzing instruments. The ability to swing rail-to-rail at the output enables designers to buffer wide output swing devices in single supply systems.

The AD8641 family is also ideal for applications utilizing multi-channel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.

The AD8641 family is fully specified over the extended industrial temperature range of –40° to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC packages. The AD8643 is available in 16-lead 3mm x 3mm LFCSP and 14-lead SOIC packages.


Applications
  • Medical Instrumentation
  • Photodiode Amplifiers
  • Precision Current Sensing
  • Battery-powered Instruments
  • Precision Filters

FEATURES and BENEFITS

  • Low Supply Current/Amp: 250 µA max
  • Very Low Input Bias Current: 1 pA max
  • Low Offset Voltage: 750 µV max
  • Single-supply Operation: 5 V to 26 V
  • Dual-supply Operation: ±2.5 V to ±13 V
  • Rail-to-rail Output
  • Unity Gain Stable
  • 3mm x 3mm LFCSP and SOIC

AD8643-EP Supports defense and aerospace applications (AQEC)

  • Download AD8643-EP Data Sheet (pdf)
  • Military temperature range
    (−55°C to +125°C)
  • Controlled manufacturing baseline
  • 1 assembly/test site
  • 1 fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12653 DSCC Drawing Number

Pin Configuration Diagram for AD8643

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8643 SPICE Macro Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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

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

AD8643 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8643ACPZ-R2 Status: Production 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 250 $6.98 $6.98 Y  Material Info PCN Purchase
AD8643ACPZ-REEL Status: Last Time Buy 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 5000 - $3.85 Y  Material Info PCN/PDN Purchase
AD8643ACPZ-REEL7 Status: Production 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 1500 - $3.85 Y  Material Info PCN Purchase
AD8643ARZ Status: Production 14 ld SOIC 14 Ind Tube, 56 $4.81 $3.85 Y  Material Info PCN Purchase Sample
AD8643ARZ-REEL Status: Last Time Buy 14 ld SOIC 14 Ind Reel, 2500 - $3.85 Y  Material Info PCN/PDN Purchase
AD8643ARZ-REEL7 Status: Production 14 ld SOIC 14 Ind Reel, 1000 - $3.85 Y  Material Info PCN Purchase
AD8643TRZ-EP Status: Production 14 ld SOIC 14 Mil Tube, 56 $9.62 $7.70 Y  Material Info Notify Me Purchase
AD8643TRZ-EP-R7 Status: Production 14 ld SOIC 14 Mil Reel, 1000 - $7.70 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-4 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-4RUZ Status: Production QUAD 14-Lead TSSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-4RZ Status: Production QUAD R-14 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.

Check Inventory & Purchase

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