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AD548:  Precision, Low Power BiFET Op Amp

Product Details


The AD548 is a low power, precision monolithic operational amplifier. It offers both low bias current (10 pA max, warmed up) and low quiescent current (200 µA max) and is fabricated with ion-implanted FET and laser wafer trimming technologies. Input bias current is guaranteed over the AD548's entire common-mode voltage range.

The economical J grade has a maximum guaranteed input offset voltage of less than 2 mV and an input offset voltage drift of less than 20µV/°C. The C grade reduces input offset voltage to less than 0.25 mV and offset voltage drift to less than 2 µV/°C. This level of dc precision is achieved utilizing Analog's laser wafer drift trimming process. The combination of low quiescent current and low offset voltage drift minimizes changes in input off-set voltage due to self-heating effects. Four additional grades are offered over the commercial, industrial and military temperature ranges.

The AD548 is recommended for any dual supply op amp application requiring low power and excellent dc and ac performance. In applications such as battery-powered, precision instrument front ends and CMOS DAC buffers, the AD548's excellent combination of low input offset voltage and drift, low bias current and low 1/f noise reduces output errors. High common-mode rejection (86 dB, min on the "C" grade) and high open-loop gain ensures better than 12-bit linearity in high impedance, buffer applications.

The AD548 is pinned out in a standard op amp configuration and is available in six performance grades. The AD548J and AD548K are rated over the commercial temperature range of 0°C to +70°C. The AD548A, AD548B and AD548C are rated over the industrial temperature range of -40°C to +85°C. The AD548S is rated over the military temperature range of -55°C to +125°C and is available processed to MIL-STD-883B, Rev. C.

The AD548 is available in an 8-pin plastic mini-DIP, cerdip, TO-99 metal can, surface mount (SOIC), or in chip form.

FEATURES and BENEFITS

  • Enhanced Replacement for LF441 and TL061
  • DC Performance:
    200 µA max Quiescent Current
    10 pA max Bias Current, Warmed Up(AD548C)
    250µV max Offset Voltage (AD548C)
    2 µV/°C max Drift (AD548C)
    2 µV p-p Noise, 0.1 Hz to 10 Hz
  • AC Performance:
    1.8 V/µs Slew Rate
    1 MHz Unity Gain Bandwidth
  • Available in Plastic and Hermetic Metal Can Packages and in Chip Form
  • Available in Tape and Reel in Accordance with EIA-481A Standard
  • MIL-STD-883B Parts Available
  • Dual Version Available: AD648
  • Surface-Mount (SOIC) Package Available

Functional Block Diagram for AD548

Documentation

Title Content Type File Type
AD548: Precision, Low Power BiFET Op Amp Data Sheet  (Rev D, 06/2002) (pdf, 215 kB) Data Sheets PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-253: Find Op Amp Noise with Spreadsheet  (pdf, 77 kB) Application Notes PDF
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

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

AD548 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD548JR Status: Obsolete 8 ld SOIC 8 Comm. Tube, 98 - - N  Material Info Notify Me Contact ADI
AD548JR-REEL Status: Obsolete 8 ld SOIC 8 Comm. Reel, 2500 - - N  Material Info Notify Me Contact ADI
AD548JR-REEL7 Status: Obsolete 8 ld SOIC 8 Comm. Reel, 750 - - N  Material Info Notify Me Contact ADI
AD548JRZ Status: Production 8 ld SOIC 8 Comm. Tube, 98 $1.39 $1.24 Y  Material Info PCN Purchase
AD548JRZ-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 750 $1.39 $1.24 Y  Material Info PCN Purchase
AD548KNZ Status: Production 8 ld PDIP 8 Comm. Tube, 50 $3.41 $3.07 Y  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.

EVAL-OPAMP-1 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-1KSZ Status: Production Single KS-5 lead SC70 Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RJZ Status: Production Single RJ-5 lead SOT23 Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RMZ Status: Production Single RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RZ Status: Production Single 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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