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AD8042:  Dual 160 MHz Rail-to-Rail Amplifier

Product Details


The AD8042 is a low power voltage feedback, high speed amplifier designed to operate on +3 V, +5 V or ± 5 V supplies. It has true single supply capability with an input voltage range extending 200 mV below the negative rail and within 1 V of the positive rail.

The output voltage swing extends to within 30 mV of each rail, providing the maximum output dynamic range. Additionally, it features gain flatness of 0.1 dB to 14 MHz while offering differential gain and phase error of 0.04% and 0.06° on a single 5 V supply. This makes the AD8042 useful for professional video electronics such as cameras, video switchers or any high speed portable equipment. The AD8042's low distortion and fast settling make it ideal for buffering single-supply, high speed Analog-to-Digital converters (ADCs).

The AD8042 offers low power supply current of 12 mA maximum and can run on a single 3.3 V power supply. These features are ideally suited for portable and battery powered applications where size and power are critical.

The wide bandwidth of 160 MHz along with 200 V/µs of slew rate on a single 5 V supply make the AD8042 useful in many general-purpose, high speed applications where single supplies from +3.3 V to +12 V and dual power supplies of up to ±6 V are needed. The AD8042 is available in 8-lead PDIP and SOIC_N packages.

Applications

  • Video switchers
  • Distribution amplifiers
  • Analog-to-digital drivers
  • Professional cameras
  • CCD Imaging systems
  • Ultrasound equipment (multichannel)

FEATURES and BENEFITS

  • Single AD8041 and quad AD8044 also available
  • Fully specified at +3 V, +5 V, and ±5 V supplies
  • Output swings to within 30 mV of either rail
  • Input voltage range extends 200 mV below ground
  • High speed and fast settling on 5 V:
    160 MHz –3 dB bandwidth (G = +1)
    200 V/µs slew rate
    39 ns settling time to 0.1%
  • Drives 50 mA 0.5 V from supply rails
  • No phase reversal with inputs 0.5 V beyond supplies
  • Low power of 5.2 mA per amplifier
  • Good video specifications
    (RL = 150 Ω, G = +2)
    Gain flatness of 0.1 dB to 14 MHz
    0.02% differential gain error
    0.04° differential phase error
  • Low distortion
    –64 dBc worst harmonic @ 10 MHz

Pin Configuration Diagram for AD8042

Documentation

Title Content Type File Type
AD8042: Dual 160 MHz Rail-to-Rail Amplifier Data Sheet  (Rev E, 12/2007) (pdf, 425 kB) Data Sheets PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps  (pdf, 55 kB)
So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
Application Notes PDF
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems  (pdf, 228 kB)
Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
Application Notes PDF
AN-414: Low Cost, Low Power Devices for HDSL Applications  (pdf, 41 kB) Application Notes PDF
CN-0143: Single-Ended-to-Differential Converters for Voltage Output and Current Output DACs Using the AD8042 Op Amp  (pdf, 197 kB) Circuit Note PDF
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 kB) Tutorials PDF
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters  (pdf, 69 kB) Tutorials PDF
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 kB) Tutorials PDF
MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 kB) Tutorials PDF
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
Webcasts WEBCAST
UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages  (pdf, 208 kB) User Guides PDF
High Speed Amplifiers Selection Table  (pdf, 77 kB) 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
dBm/dBu/dBv Calculator
This calculator converts between standard units of power measurement and signal strength.
Utilities and Conversions HTML
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
Utilities and Conversions HTML
ADIsimOpAmp™
This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
ADIsim Design/Simulation Tools HTML
OpAmp Stability
An applet for demonstrating stability effects in opamp buffers.
Design Calculators HTML
AD8042 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.

Product Recommendations & Reference Designs

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Price, packaging, availability

AD8042 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8042ACHIPS Status: Production CHIPS OR DIE 0 Ind Tray, 100 - - Y  Material Info PCN Contact ADI
AD8042AN Status: Last Time Buy 8 ld PDIP 8 Ind Tube, 50 $2.68 $2.28 N  Material Info PCN/PDN Purchase
AD8042AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.11 $2.64 N  Material Info PCN Purchase
AD8042AR-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.64 N  Material Info PCN Purchase
AD8042AR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 750 $3.11 $2.64 N  Material Info PCN Purchase
AD8042ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $2.68 $2.28 Y  Material Info PCN Purchase Sample
AD8042ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.28 Y  Material Info PCN Purchase
AD8042ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $2.68 $2.28 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.

AD8042 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8042AR-EBZ Status: Production 8-Lead SOIC Bare Evaluation Board $18.25 Yes -
AD8042ARZ Status: Production 8-Lead SOIC $3.75 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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