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ADA4891-4:  Low Cost CMOS, High Speed, Rail-to-Rail Amplifier (Quad)

Product Details

Product Status:Recommended for New Designs

The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple), and ADA4891-4 (quad) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail.

In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range.

The ADA4891 family of amplifiers is ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications.

The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are available in a wide variety of packages.

The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages.

The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages.

The ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and 14-lead TSSOP packages.

The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C.


Applications
  • Imaging
  • Consumer video
  • Active filters
  • Coaxial cable drivers
  • Clock buffers
  • Photodiode preamp
  • Contact image sensor and buffers

FEATURES and BENEFITS

  • Chinese data sheet available
  • High speed and fast settling
    −3 dB bandwidth: 220 MHz (G = +1)
    Slew rate: 170 V/μs
    Settling time to 0.1%: 28 ns
  • Video specifications (G = +2, RL = 150 Ω)
    0.1 dB gain flatness: 25 MHz
    Differential gain error: 0.05%
    Differential phase error: 0.25°
  • Single-supply operation
    Wide supply range: 2.7 V to 5.5 V
    Output swings to within 50 mV of supply rails
  • Low distortion: 79 dBc SFDR at 1 MHz
  • Linear output current: 125 mA at −40 dBc
  • Low power of 4.4 mA per amplifier

Functional Block Diagram

Documentation

Title Content Type File Type
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4: Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers Data Sheet (Rev E, 03/2013) (PDF, 646 kB) Data Sheets PDF
CN-0187: Crest Factor, Peak, and RMS RF Power Measurement Circuit Optimized for High Speed, Low Power, and Single 3.3 V Supply  (pdf, 163 kB) Circuit Note PDF
UG-111: Universal Evaluation Board for Quad, High Speed Op Amps Offered in 14-Lead SOIC Packages  (pdf, 164 kB) User Guides PDF
UG-020: Universal Evaluation Board for Quad High Speed Op Amps Offered in 14-Lead TSSOP Packages  (pdf, 233 kB) User Guides PDF
SAR ADC & Driver Quick-Match Guide  (pdf, 251 kB)
Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application conditions.
Product Selection Guide PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADA4891 SPICE Macro Model
For double amplifiers applications use the ADA4891-2, for triple use the ADA4891-3, and for quad use ADA4891-4
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.

Product Recommendations & Reference Designs

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Price, packaging, availability

ADA4891-4 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADA4891-4ARUZ Status: Production 14 ld TSSOP 14 Ind Tube, 96 $1.28 $1.09 Y  Material Info Notify Me Purchase Sample
ADA4891-4ARUZ-R7 Status: Production 14 ld TSSOP 14 Ind Reel, 1000 - $1.09 Y  Material Info Notify Me Purchase
ADA4891-4ARUZ-RL Status: Production 14 ld TSSOP 14 Ind Reel, 2500 - $1.09 Y  Material Info Notify Me Purchase
ADA4891-4ARZ Status: Production 14 ld SOIC 14 Ind Tube, 56 $1.28 $1.09 Y  Material Info PCN Purchase Sample
ADA4891-4ARZ-R7 Status: Production 14 ld SOIC 14 Ind Reel, 1000 - $1.09 Y  Material Info PCN Purchase
ADA4891-4ARZ-RL Status: Production 14 ld SOIC 14 Ind Reel, 2500 - $1.09 Y  Material Info PCN Purchase
ADA4891-4WARUZ-R7 Status: Production TSSOP 4.4 MM 14 Ind Reel, 1000 - $1.09 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.

ADA4891-4 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADA4891-4AR-EBZ Status: Production 14-Lead SOIC Bare EValuation Board $18.25 Yes -
ADA4891-4ARZ Status: Production 14-Lead SOIC $1.80 Yes -
ADA4891-4ARU-EBZ Status: Production 14-Lead TSSOP Bare Evaluation Board $18.25 Yes -
ADA4891-4ARUZ Status: Production 14-Lead TSSOP $1.80 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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